Siliconware Precision Industries (SPILA) 20-F 2010 FY Annual report (foreign)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 20-F

(Mark One)

¨ Registration statement pursuant to Section 12(b) or 12(g) of the Securities Exchange Act of 1934

or

x Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the fiscal year ended December 31, 2010.

or

¨ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from            to            

or

¨ Shell company report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of event requiring this shell company report

Commission file number 000-30702

Siliconware Precision Industries Co., Ltd.

(Exact Name of Registrant as Specified in Its Charter)

Taiwan, Republic of China

(Jurisdiction of Incorporation or Organization)

No. 123, Sec. 3, Da Fong Road, Tantzu, Taichung, Taiwan, R.O.C.

(Address of Principal Executive Offices)

Eva Chen, telephone: +886 (4) 2534-1525, fax: +886 (4) 2534-6278,

No. 123, Sec. 3, Da Fong Road, Tantzu, Taichung, Taiwan, R.O.C.

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Title of Each Class	Name of Each Exchange On Which Registered
American Depositary Shares, each representing 5 Common Shares	The NASDAQ Stock Market LLC (The NASDAQ Global Select Market)
Common Shares, par value NT$10 per share	The NASDAQ Stock Market LLC (The NASDAQ Global Select Market)*

* Not for trading, but only in connection with the registration of American Depositary Shares representing such Common Shares pursuant to the requirements of the Securities and Exchange Commission.

Securities registered or to be registered pursuant to Section 12(g) of the Act:

None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:

None

Indicate the number of outstanding shares of each of the Issuer’s classes of capital or common stock as of the close of the period covered by the annual report.

3,116,361,139 Common Shares were outstanding as of December 31, 2010

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

Yes  x    No  ¨

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.

Yes  ¨    No  x

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes  ¨    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer  x    Accelerated filer  ¨    Non-accelerated filer  ¨

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP  ¨

International Financial Reporting Standards as issued by the International Accounting Standards Board  ¨    Other  x

Indicate by check mark which financial statement item the registrant has elected to follow. Item  17  ¨    Item  18  x

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Securities Exchange Act of 1934).

Yes  ¨    No  x

SILICONWARE PRECISION INDUSTRIES CO., LTD.

FORM 20-F ANNUAL REPORT

FISCAL YEAR ENDED DECEMBER 31, 2010

TABLE OF CONTENTS

		Page
Supplemental Information			1
Forward-Looking Statements in This Annual Report May Not Be Accurate			1
PART I			2
Item 1.	Identity of Directors, Senior Management and Advisers		2
Item 2.	Offer Statistics and Expected Timetable		2
Item 3.	Key Information		2
Item 4.	Information on the Company		18
Item 4A.	Unresolved Staff Comments		31
Item 5.	Operating and Financial Review and Prospects		31
Item 6.	Directors, Senior Management and Employees		47
Item 7.	Major Shareholders and Related Party Transactions		51
Item 8.	Financial Information		53
Item 9.	The Offer and Listing		54
Item 10.	Additional Information		56
Item 11.	Quantitative and Qualitative Disclosures About Market Risk		71
Item 12.	Description of Securities Other Than Equity Securities		72
PART II			74
Item 13.	Defaults, Dividend Arrearages and Delinquencies		74
Item 14.	Material Modifications to the Rights of Security Holders and Use of Proceeds		74
Item 15.	Controls and Procedures		74
Item 16A.	Audit Committee Financial Expert		75
Item 16B.	Code of Ethics		75
Item 16C.	Principal Accountant Fees and Services		75
Item 16D.	Exemptions from the Listing Standards for Audit Committees		76
Item 16E.	Purchase of Equity Securities by the Issuer and Affiliated Purchasers		76
Item 16F.	Change in Registrant’s Certifying Accountant		76
Item 16G.	Corporate Governance		76
PART III			78
Item 17.	Financial Statements		78
Item 18.	Financial Statements		78
Item 19.	Exhibit Index		79
Exhibit 1.1
Exhibit 8.1
Exhibit 12.1
Exhibit 12.2
Exhibit 13.1
Exhibit 13.2

i

Supplemental Information

All references to “we,” “us,” “our” and “our company” in this annual report are to Siliconware Precision Industries Co., Ltd. and our consolidated subsidiaries, unless the context otherwise requires. All references to “shares” and “common shares” are to our common shares, par value NT$10 per share, and to “ADSs” are to our American depositary shares, each of which represents five of our common shares. The ADSs are issued under the deposit agreement, as amended, supplemented or modified from time to time, originally dated as of June 7, 2000, among Siliconware Precision Industries Co., Ltd. and Citibank, N.A., as depository, and the holders and beneficial owners of American Depositary Receipts issued thereunder. All references to “Taiwan” are to the island of Taiwan and other areas under the effective control of the Republic of China. All references to “the government” or “the Republic of China government” are to the government of the Republic of China. All references to the “Securities and Futures Bureau” are to the Securities and Futures Bureau of the Republic of China or its predecessors, as applicable. “R.O.C. GAAP” means the generally accepted accounting principles of the Republic of China, and “U.S. GAAP” means the generally accepted accounting principles of the United States. Any discrepancies in any table between totals and sums of the amounts listed are due to rounding. Unless otherwise indicated, or the context otherwise requires, references in this annual report to financial and operational data for a particular year refer to the fiscal year of our company ended December 31 of that year.

We publish our consolidated financial statements in New Taiwan dollars, the lawful currency of the Republic of China. In this annual report, “NT$” and “NT dollars” mean New Taiwan dollars, “$,” “US$” and “U.S. dollars” mean United States dollars.

Forward-Looking Statements in This Annual Report May Not Be Accurate

Our disclosure and analysis in this annual report contain or incorporate by reference some forward-looking statements. Our forward-looking statements contain information regarding, among other things, our financial condition, future expansion plans and business strategy. We have based these forward-looking statements on our current expectations and projections about future events. You can identify these statements by the fact that they do not relate strictly to historical or current facts. Although we believe that these expectations and projections are reasonable, such forward-looking statements are inherently subject to risks, uncertainties and assumptions about us, including, among other things:

• the intensely competitive semiconductor and personal computer industries and markets;

• risks associated with international business activities;

• our dependence on key personnel;

• natural disasters, such as earthquakes and droughts, which are beyond our control;

• general economic and political conditions, including those related to the semiconductor and personal computer industries;

• possible disruptions in commercial activities caused by human-induced disasters, including terrorist activity and armed conflict, and outbreaks of contagious diseases, such as avian influenza which reduce end-user purchases relative to expectations and orders;

• fluctuations in foreign currency exchange rates;

• additional disclosures we make in our previous and future Form 20-F annual reports and Form 6-K periodic reports to the Securities and Exchange Commission, or the SEC; and

• those other risks identified in “Item 3. Key Information—D. Risk Factors” of this annual report.

1

The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,” “will,” “shall” and similar expressions, as they relate to us, are intended to identify a number of these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise. In light of these risks, uncertainties and assumptions, the forward-looking events discussed in this annual report might not occur and our actual results could differ materially from those anticipated in these forward-looking statements.

PART I

Item 1. Identity of Directors, Senior Management and Advisers

Not applicable.

Item 2. Offer Statistics and Expected Timetable

Not applicable.

Item 3. Key Information

A. Selected Financial Data

The selected financial data shown below should be read in conjunction with “Item 5. Operating and Financial Review and Prospects,” and the financial statements and the notes to those statements included elsewhere in this annual report. The selected statement of income data for the years ended December 31, 2008, 2009 and 2010 and the selected balance sheet data as of December 31, 2009 and 2010 have been derived from our audited financial statements included elsewhere in this annual report. The selected statement of income data for the years ended December 31, 2006 and 2007 and the selected balance sheet data as of December 31, 2006, 2007 and 2008 have been derived from our audited financial statements not included in this annual report. The financial statements have been prepared and presented according to generally accepted accounting principles in the Republic of China, or R.O.C. GAAP, which differ in many important respects from generally accepted accounting principles in the United States, or U.S. GAAP. For a discussion of the material differences, see note 31 to our financial statements included elsewhere in this annual report. Some of our statement of income and balance sheet data items have been reconciled to U.S. GAAP as shown below.

	Years Ended December 31,
	2006			2007			2008			2009			2010
	NT$			NT$			NT$			NT$			NT$			US$(6)
	(in millions, except earnings or dividends per share and per ADS data)
Income Statement Data:
R.O.C. GAAP
Net operating revenues		57,126			66,177			62,403			59,295			63,857			2,191.4
Cost of goods sold		(41,895	)		(46,776	)		(49,454	)		(47,852	)		(54,041	)		(1,854.5	)
Gross profit		15,231			19,401			12,949			11,443			9,816			336.9
Operating expenses		(2,989	)		(3,224	)		(4,003	)		(3,300	)		(3,440	)		(118.1	)
Operating income		12,242			16,177			8,946			8,143			6,376			218.8
Equity investment income (loss)(1)		1,154			246			—			—			(4	)		(0.1	)
Other non-operating income(1)		1,078			3,353			718			2,261			341			11.7
Other non-operating expense		(196	)		(148	)		(3,140	)		(191	)		(323	)		(11.1	)
Income before income tax(1)		14,278			19,628			6,524			10,213			6,390			219.3
Income tax expense		(949	)		(2,139	)		(210	)		(1,423	)		(763	)		(26.2	)
Income from continuing operations		13,329			17,489			6,314			8,790			5,627			193.1
Cumulative effects of changes in accounting principles		—			—			—			—			—			—
Net income(1)(2)		13,329			17,489			6,314			8,790			5,627			193.1
Earnings per share(3)
Basic		4.63			5.66			2.03			2.82			1.81			0.06
Diluted		4.36			5.63			2.01			2.80			1.80			0.06
Shares used in per share calculation (average, as adjusted)(2)
Basic		2,873			3,092			3,115			3,116			3,116			3,116

2

	Years Ended December 31,
	2006			2007			2008			2009			2010
	NT$			NT$			NT$			NT$			NT$			US$(6)
	(in millions, except earnings or dividends per share and per ADS data)
Diluted		3,066			3,115			3,139			3,138			3,133			3,133
Earnings per ADS(3)
Basic		23.15			28.30			10.15			14.10			9.05			0.31
Diluted		21.80			28.15			10.05			14.00			9.00			0.31
Dividends per share(4)		2.62			3.55			4.60			1.80			2.58			0.09
ADSs used in per ADS calculation (average, as adjusted)(3)
Basic		575			618			623			623			623			623
Diluted		613			623			628			628			627			627
U.S. GAAP
Net operating revenues		57,126			66,177			62,403			59,295			63,857			2,191.4
Operating Income		10,292			12,534			7,363			8,128			6,368			218.5
Income before income tax		9,379			15,214			4,661			10,199			6,382			219.0
Income tax expense		(966	)		(2,115	)		(267	)		(1,444	)		(785	)		(26.9	)
Income from continuing operations		8,413			13,099			4,394			8,755			5,597			192.1
Net income		8,413			13,099			4,394			8,755			5,597			192.1
Earnings per share(5)
Basic		3.02			4.33			1.42			2.81			1.80			0.06
Diluted		3.01			4.32			1.42			2.81			1.80			0.06
Shares used in per share calculation (average, as adjusted)(5)
Basic		2,783			3,026			3,089			3,116			3,116			3,116
Diluted		2,798			3,032			3,103			3,116			3,116			3,116
Earnings per ADS
Basic		15.10			21.65			7.10			14.05			9.00			0.31
Diluted		15.05			21.60			7.10			14.05			9.00			0.31
ADSs used in per ADS calculation (average, as adjusted)(5)
Basic		557			605			618			623			623			623
Diluted		560			606			621			623			623			623
Other Data:
R.O.C. GAAP
Capital expenditures		11,039			12,151			10,048			5,303			15,321			525.8
Depreciation and amortization		7,294			8,169			9,432			8,954			8,913			305.9
Dividends declared per share		3.55			4.60			1.80			2.58			1.62			0.06
	As of December 31,
	2006			2007			2008			2009			2010
	NT$			NT$			NT$			NT$			NT$			US$(6)
	(in millions, except earnings or dividends per share and per ADS data)
Balance Sheet Data:
R.O.C. GAAP
Cash and cash equivalents		14,731			22,625			18,841			19,615			15,519			532.6
Working capital		18,741			26,363			18,481			20,978			14,648			502.7
Total assets		78,991			85,773			73,380			78,311			82,557			2,833.1
Short-term debt and current portion of long-term debt		446			529			1,404			225			1,461			50.1
Long-term debt		5,801			2,996			2,248			—			4,368			149.9
Total liabilities		16,055			16,865			14,066			15,229			21,261			729.6
Capital stock		28,878			30,734			31,526			31,164			31,164			1,069.5
Total stockholders’ equity		62,936			68,908			59,314			63,081			61,296			2,103.5
U.S. GAAP
Total assets		83,770			90,836			78,365			83,357			87,608			3,006.5
Total liabilities		18,911			19,140			14,448			15,899			21,988			754.6
Total stockholders’ equity		64,859			71,696			63,917			67,458			65,620			2,251.9

3

(1) We recognized investment income of NT$1,125 million for the year ended December 31, 2006 and NT$246 million for the period between January 1, 2007 and March 27, 2007 from ChipMOS Taiwan’s financial results. In 2006 and 2007, our investment incomes under U.S. GAAP from ChipMOS Taiwan were NT$1,045 million and NT$253 million, respectively.

Pursuant to a Share Purchase and Subscription Agreement entered into among us, ChipMOS Technologies (Bermuda) Ltd., or ChipMOS Bermuda and ChipMOS Taiwan, on March 27, 2007, we sold, and ChipMOS Bermuda and ChipMOS Taiwan purchased, all of the common shares of ChipMOS Taiwan, at par value NT$10 per share, owned by us for a total cash consideration of US$191,147,464. In addition, we subscribed for 12,174,998 newly issued common shares of ChipMOS Bermuda, at par value US$0.01 per share, for an aggregate consideration of US$76,458,987, representing a purchase price of US$6.28 per common share of ChipMOS Bermuda. Upon the completion of the transaction, we owned 14.7% of ChipMOS Bermuda. From the date of the completion of the sale and purchase, we are required under both R.O.C. GAAP and U.S. GAAP to recognize our ownership in ChipMOS Bermuda as available-for-sale financial assets and evaluate their fair market value on a quarterly basis (under R.O.C. GAAP) and on an annual basis (under U.S. GAAP) and reflect any difference in evaluation from the previous quarter as an addition in or a deduction from “unrealized gain or loss on available-for-sale financial assets”.

(2) We did not have minority interest in 2006, 2007, 2008, 2009 and 2010. Therefore, no such information is presented separately in this table.

(3) Retroactively adjusted for all subsequent stock dividends and employee share bonuses for 2006 and 2007.

(4) Adjusted to reflect 93,876,060 shares, 77,892,337 shares, nil shares and nil shares distributed as stock dividends and employee stock bonuses in 2007, 2008, 2009 and 2010, respectively, with respect to the earnings of 2006, 2007, 2008 and 2009.

(5) Retroactively adjusted for all subsequent stock dividends only.

(6) Amounts translated for convenience at NT$29.14 to US$1.00, which was the noon buying rate as certified for customs purposes by the Federal Reserve Bank of New York on December 30, 2010.

(7) Certain accounts in the consolidated financial statements for the years of 2006, 2007 and 2008 have been reclassified to conform to the 2009 consolidated financial statement presentation due to the adoption of R.O.C. SFAS No. 10 “Accounting for Inventories” effective January 1, 2009.

Currency Translations and Exchange Rates

We have translated certain New Taiwan dollars, or NT dollars, amounts included in this annual report into U.S. dollars for the convenience of the readers. The rate we used for the translations was NT$29.14 = US$1.00, which was the noon buying rate as certified for customs purposes by the Federal Reserve Bank of New York on December 30, 2010. The translation does not mean that NT dollars could actually be converted into U.S. dollars at that rate. The following table shows the noon buying rates for NT dollars expressed in NT dollar per US$1.00.

Year Ended December 31,	Average(1)		High		Low		At Period End
2006		32.51		33.31		31.28		32.59
2007		32.85		33.41		32.26		32.43
2008		31.51		33.55		29.99		32.76
2009		32.96		35.21		31.95		31.95
2010		31.39		32.43		29.14		29.14
October		30.82		31.30		30.42		30.60
November		30.32		30.52		30.12		30.47
December		29.90		30.37		29.14		29.14
2011 (through April 15, 2011)		29.30		29.76		28.78		29.04
January		29.11		29.36		28.98		29.03
February		29.28		29.76		28.78		29.74
March		29.49		29.63		29.35		29.40
April (through April 15, 2011)		29.07		29.31		28.92		29.04

Source: Federal Reserve Statistical Release, Board of Governors of the Federal Reserve System.

(1) Annual averages are calculated using the average of the exchange rates on the last day of each month during the period. Monthly averages are calculated using the average of the daily rates during the relevant period.

B. Capitalization and Indebtedness

Not applicable.

C. Reasons for the Offer and Use of Proceeds

Not applicable.

4

D. Risk Factors

Our business and operations are subject to various risks, many of which are beyond our control. If any of the risks described below actually occurs, our services, financial condition or results of operations could be seriously harmed.

Risks Relating to Our Financial Condition and Business

Any global systemic economic and financial crisis could negatively affect our business, results of operations, and financial condition

The systemic economic and financial crisis in 2008 and 2009 that affected global businesses including the banking and financial sectors also had an impact on the semiconductor markets. The turmoil in global markets in 2008 resulted in sharp declines in demand for our semiconductor packaging and testing services from which we generate our revenues. The global economy has been slowly recovering since the end of 2009. However, in light of the recent European debt crisis, the global economy is still uncertain and may continue to deteriorate in the future. There were, and could be in the future, domino effects from such turmoil on our business, including significant decreases in orders from our customers, insolvency of key suppliers resulting in service delays, inability of customers to obtain credit to finance purchases of our services, customer insolvencies, weak consumer confidence, diminished consumer and business spending and asset depreciation negatively impacting our operations. Any systemic economic or financial crisis could cause revenues for the semiconductor industry as a whole to decline dramatically and could materially and adversely affect our results of operations.

We plan to continue to closely monitor the market and enhance our internal risk control procedures, as well as implement prudent, efficient and flexible business practices. We believe that such measures may help us to mitigate our exposure to any systemic economic and financial crisis.

The cyclical nature of the semiconductor industry makes us particularly vulnerable to economic downturns and changes in the semiconductor industry

Because our manufacturing services are, and will continue to be, dependent on the requirements of semiconductor companies for independent testing and assembly services, any downturn in the highly cyclical semiconductor industry, caused by economic downturns or other reasons, may reduce demand for our manufacturing services and adversely affect our results of operations. Variations in order levels from our customers and in service fee rates may result in volatility in our net operating revenues and earnings. The markets for semiconductors are also characterized by rapid technological change, evolving industry standards and periods of heightened competition. If demand for semiconductor capacity does not keep pace with the growth of supply, or further declines, our manufacturing services would be subject to more intense competition and our results of operations may suffer because of the resulting downward pricing pressure and capacity underutilization. Any increased competition may cause average selling prices of many of our semiconductor packages and testing services to decrease significantly, which may lead to pressure on our gross margins and negatively affect our operating results. Future downturns in the semiconductor industry may be severe. In the event of any future downturn, our average selling prices may decline without a corresponding decrease in our high fixed costs. This could lead to a decline in our gross margin, which would seriously harm our manufacturing services.

Our operating results fluctuate significantly, which may affect the value of your investments

Our historical net operating revenues and results of operations have varied, at times significantly, from quarter to quarter. Our future net operating revenues, gross profit and operating income may vary significantly due to a combination of factors. These factors include:

• our ability to develop and implement new technologies. If we are unable to successfully implement new technologies in a timely manner, our operating results could suffer because we would allow our competitors to seize the opportunities in developing new markets.

5

• changes in our mix of manufacturing services or our customers’ preferences. When we discontinue or add manufacturing service or when our customers’ demand changes, our operating results usually fluctuate.

• changes in capacity utilization. When capacity utilization is low, such as in times of market downturns, we may need to adjust our mix of manufacturing services to respond to changes in demand and to adjust our prices sufficiently enough to maintain the level of our capacity utilization.

Moreover, the substrate packaging which uses higher-cost raw materials has caused the costs of production for semiconductor packaging to rise significantly. If our revenues do not grow and we are unable to reduce our expenses, our profitability will suffer.

We do not have any significant backlog because our customers do not place purchase orders far in advance, which makes us vulnerable to sudden changes in customer demand

Our customers generally do not place purchase orders far in advance, and our contracts with major domestic customers do not generally require minimum purchase of our manufacturing services. In addition, our customers’ purchase orders have varied significantly from period to period because demand for their products is often volatile. As a result, we do not typically operate with any significant backlog. The lack of a significant backlog makes it difficult for us to forecast our net operating revenues in future periods and causes our operating results to fluctuate from period to period. Moreover, our expense levels are based in part on our expectations of future revenue and we may be unable to adjust costs in a timely manner to compensate for revenue shortfalls. We expect that in the future our net operating revenues in any quarter will continue to be substantially dependent upon purchase orders received in that quarter. We cannot assure you that any of our customers will continue to place orders with us in the future at the same levels as in prior periods. We also cannot assure you that our customers’ orders will be consistent with our expectations when we made or will make the necessary investments in raw materials, labor and equipment.

If we are unable to maintain a steady return to our former capacity utilization rates, our profitability would be adversely affected

From 2005 to the third quarter of 2008, we maintained relatively high capacity utilization rates due to relatively high demand for our manufacturing services. However, since the fourth quarter of 2008, demand decline in the semiconductor industry has adversely affected our capacity utilization and profitability and we cannot assure you that we will be able to achieve or sustain a high utilization rate in the future. Although demand in the semiconductor industry began recovering in the third quarter of 2009 and continued to increase in 2010, any general downturn in the semiconductor industry would harm our capacity utilization, and as a result may adversely affect our profitability and results of operations in the future.

Given the high fixed costs of our services, high capacity utilization allows us to maintain higher gross margins because it allows us to allocate fixed costs over a greater number of units we package and test. Increases or decreases in capacity utilization rates can have a significant effect on our manufacturing services. Accordingly, our ability to enhance our gross margins will depend, in part, on our ability to continue to increase our capacity utilization rates.

In addition, in order to continue to increase or sustain our capacity utilization, we must:

• ensure that our packaging and testing technologies meet our customers’ needs;

• install advanced equipment in anticipation of new business; and

• prevent disruption of operations due to fire, accidents, mechanical and technical failures, expansion, introduction of new packages or relocation of equipment.

If demand for our manufacturing services does not meet our expectations, our capacity utilization would decrease and our gross margins would suffer.

6

We depend on a small number of customers for a substantial portion of our revenues and a loss of any one of these customers would result in the loss of a significant portion of our revenues

We are dependent on a small group of customers for a substantial portion of our manufacturing services. In 2008, 2009 and 2010, 56.6%, 60.0% and 56.4% of our net operating revenues, respectively, were derived from sales to our top ten customers. In 2010, our largest customer accounted for 10.0% of our net operating revenues. We expect that we will continue to depend on a relatively limited number of customers for a significant portion of our net operating revenues because of the concentration of demand in the semiconductor industry for our manufacturing services. Our ability to maintain close and satisfactory relationships with our customers is important to the ongoing success and profitability of our manufacturing services. Few of our customers are presently obligated to purchase packaging or testing services or to provide us with forecasts of product purchases for any period. If any of our significant customers reduces, delays or cancels its orders to a significant degree, our manufacturing services would be harmed because each of these customers accounts for a significant portion of our net operating revenues.

If capital resources required for our future expansion plans are not available, we may be unable to successfully implement our services strategy

We have engaged in equipment and facilities expansion in recent years to upgrade our technology and equipment. Our business growth in the future will continue to require substantial capital expenditures to fund such equipment and facilities expansions. We periodically review and adjust our capital expenditure plans to address our expectation of demand for our services and prevailing industry trends. The growing demand for our manufacturing services has and will continue to require significant capital expenditures on packaging technology and equipment. In making these planned capital expenditures, we may need to obtain additional capital. In addition, we may be unable to accurately estimate the timing and amount of our capital requirements, which depend on a number of factors, including demand for our manufacturing services and availability of equipment and whether or when the market will recover. In addition, we cannot assure you that additional financing will be available on satisfactory terms to us, or at all, when we require additional financing, which could have a material adverse effect on our business and results of operations.

If we cannot compete successfully in our industry, our current and potential customers would likely decide not to use our manufacturing services, which would seriously harm our business

The independent semiconductor packaging and testing industry is very competitive. We face substantial competition from established packaging and testing companies, including Advanced Semiconductor Engineering, Inc. (Taiwan), Amkor Technology Inc. (USA) and STATS ChipPAC Ltd. (Singapore). We may face additional competition from new competitors in our industry in emerging countries, such as the People’s Republic of China, or the PRC, where demand is expected to grow for our manufacturing services. To a lesser extent, we also compete with the internal packaging and testing capabilities of our customers who have in-house packaging and testing capabilities. Some of our competitors have greater technology resources. Some of our competitors have greater financial and other resources than we do, including established relationships with many large semiconductor companies which are our current or potential customers. These relationships and lengthy qualification periods required by most of our potential customers may prevent us from securing new customers.

If the outsourcing trend for packaging and testing services does not continue, we could lose a significant number of our current customers and we may be unable to implement our manufacturing services strategy plan in the future

We depend on outsourcing of packaging and testing services by fabless semiconductor companies and integrated device manufacturers. In recent years, semiconductor companies have increasingly subcontracted parts of the semiconductor production process, including packaging and testing, to independent companies to reduce costs and shorten production cycles. However, we cannot assure you that the outsourcing trend will continue. If integrated device manufacturers become dissatisfied with the services of independent semiconductor packaging and testing companies, they may return to utilizing in-house packaging and testing capabilities. A reversal of, or slowdown in, the outsourcing trend would harm our business and make it difficult for us to implement our growth plan in the future.

7

The trend of adopting protectionist measures in certain countries, including the United States, could have a material adverse impact on our results of operations and financial condition

Governments in the United States, China, Europe and certain other countries have implemented fiscal and monetary programs to stimulate economic growth as a result of the recent economic downturn, and many of these programs include protectionist measures that encourage the use of domestic products and labor. If the governments in the countries where our customers are located enact protectionist measures that encourage the use of domestic products and labor, demand for our services could be adversely affected. Recent policy developments by the governments in China also suggest an increased unwillingness to allow international companies to invest in or acquire local businesses. Since some of our direct customers and other downstream customers in the supply chain are located in or have operations in the countries where protectionist measures were adopted, such protectionist measures could have a material adverse effect on our business in the future.

Our production schedule may be delayed and our business may be adversely affected if we are unable to obtain raw materials from our suppliers at acceptable prices, qualities and quantities

We must obtain sufficient quantities of raw materials at acceptable prices in a timely manner. We source most of our raw materials, including critical materials, such as gold wire, substrates and lead-frames, from a limited group of suppliers. We purchase all of our materials on a purchase order basis at prevailing market prices and have no long-term contracts with any of our suppliers. From time to time, suppliers have extended lead times or limited the supply of required materials to us because of supply capacity constraints during market upturns for the semiconductor industry. Consequently, we have experienced from time to time difficulty in obtaining acceptable quantities of raw materials on a timely basis. In addition, from time to time, we may reject materials that do not meet our specifications, resulting in declines in output or yield. We cannot assure you that we will be able to obtain in the future sufficient quantities of raw materials and other supplies of an acceptable quality. Our inability to obtain raw materials in a timely and cost effective manner would cause us to delay our production and delivery schedules, which may result in the loss of our customers and revenues.

The price of gold wire has been volatile and has fluctuated with the spot price of gold in recent years. In 2010, the spot price of gold fluctuated from a low of approximately US$1,062.6 per ounce to a high of approximately US$1,422.9 per ounce. The increase in the price of gold wire resulted in the decrease in our gross margin in 2010. To the extent we are not able to offset any increases in our raw material costs, our gross margins may be adversely impacted.

If we are unable to obtain equipment from our suppliers, we may be forced to delay any future expansion plans

We need to purchase new packaging and testing equipment if we decide to expand our operations. From time to time, increased demand for new equipment may cause lead times to extend beyond those normally required by equipment vendors. For example, in the past, increased demand for equipment caused some equipment suppliers to only partially satisfy our equipment orders in the normal lead time frame during market upturns for the semiconductor industry. The unavailability of equipment or failures to deliver equipment could delay implementation of our future expansion plans and impair our ability to meet customer orders. If we are unable to implement our future expansion plans or meet customer orders, we could lose potential and existing customers. Generally, we do not enter into binding equipment purchase agreements and we acquire our equipment on a purchase order basis, which exposes us to substantial risks. For example, sudden changes in foreign currency exchange rates, particularly the U.S. dollar and Japanese yen, could result in increased prices for equipment purchased by us, which could harm our results of operations.

If we are unable to manage our growth effectively, our expansion plans could be jeopardized

We have in the past and again recently experienced growth in the scope and complexity of our operations and in the number of our employees. This growth has strained our managerial, financial, manufacturing and other resources. In order to manage our future growth, we must continue to implement additional operating and financial controls and hire and train additional personnel. We cannot assure you that we will be able to do so in the future, and our failure to do so could jeopardize our future expansion plans.

8

We depend on key management and the loss of any key management personnel may disrupt our manufacturing services

Our success depends upon the continued service of key senior management. Members of our senior management have served us for an average of over ten years and have made substantial contributions to our growth. We do not have employment contracts with many of our senior management and none of our senior management is bound by any non-competition agreement. If we lose the services of key senior management we would be unable to find and integrate replacement personnel, which could adversely affect our services expansion.

We depend on our technical personnel and the inability to attract and retain them would jeopardize our operations and future expansion plans

Our business depends on technology and, accordingly, our success depends on our ability to attract, retain and motivate highly skilled employees, particularly engineering and technical personnel. Without sufficient numbers of skilled employees, our operations would suffer, resulting in deteriorating ability to solve operating and other issues in a timely and effective manner. Competition for qualified engineering and technical employees in Taiwan is intense and replacement of qualified employees is difficult. If we are unable to attract, retain and motivate our technical personnel, our operations would be jeopardized and our operating efficiency would deteriorate.

Our failure to comply with environmental regulations or to defend against environmental claims could expose us to serious liabilities

The semiconductor packaging and testing processes produce liquid waste and solid waste, which are regulated by the government. For example, liquid waste is produced when silicon wafers are diced into chips using diamond saws and cooled with running water. Liquid waste is also produced when lead-frames are plated with solder and cleansed with water after wafer chips are bonded onto them and capsulated by mold resin. Moreover, excess materials between leads of lead-frames are removed in the trim and form process. Environmental claims or the failure to comply with any environmental regulations could result in damages or fines against us or suspension of production. We may be required by new regulations to acquire costly equipment or to incur other significant expenses. If we fail to control the use of hazardous substances, we could incur future liabilities, including clean up costs.

We and our customers and suppliers are vulnerable to natural disasters and other events beyond our control, the occurrence of which may seriously harm our manufacturing services

Our operations and those of our customers and suppliers are particularly vulnerable to fires, earthquakes, typhoons, droughts, floods, power losses, and similar events. We cannot guarantee that future earthquakes will not cause material damage to our facilities or property, including work in progress, or cause significant business interruptions. Although we maintain property and business interruption insurance for such risks, there is no guarantee that future damages or business loss from earthquakes will be covered by such insurance, that we will be able to collect from our insurance carriers, should we choose to claim under our insurance policies, or that such coverage will be sufficient. In March 2011, Japan was struck by a 9.0-magnitude earthquake. Although the earthquake together with the resulting tsunami and radiation leak at the Fukushima nuclear power plant have not had an immediate direct impact on our operations, we cannot assure you that these events will not have any subsequent adverse effect on our industry. The extent of existing and potential future radiation release from the Fukushima nuclear power plant is still in flux and coupled with potential aftershocks from the earthquake, may result in future additional adverse effects on our facilities and operations and those of our customers and suppliers. In particular, our supply chain may be adversely affected as the production facilities of some suppliers to our suppliers are located in Japan. Disruptions or delays in our supply chain may result in shortages of components we utilize which may in turn affect our ability to successfully perform our semiconductor packaging, testing and manufacturing services. Any failure on our part to provide our services to customers may have an adverse effect on our financial condition and results of operations.

In addition, the production facilities of many of our suppliers and customers’ providers of complementary semiconductor manufacturing services, including foundries, are located in Taiwan. If our customers are affected, it could result in a decline in the demand for our testing and assembly services. If our suppliers and providers of complementary semiconductor manufacturing services are affected, our production schedule could be interrupted or delayed. As a result, a major earthquake, natural disaster or other disruptive event in Taiwan could severely disrupt the normal operation of business and have an adverse effect on our financial condition and results of operations.

9

Climate change, other environmental concerns and green initiatives present commercial challenges, economic risks and physical risks that could harm our results of operations or affect the manner in which we conduct our business

Increasing climate change and environmental concerns could affect the results of our operations if any of our customers would request us to exceed any standard(s) set for environmentally compliant products and services. If we are unable to offer such products or offer products that are compliant, but are not as reliable due to the lack of reasonably available alternative technologies or materials, we may lose market share to our competitors. Customers may request us to provide information on a particular product’s carbon footprint, which is expressed in terms of the carbon dioxide emission from our manufacture of a product. If we are unable to provide the requested information to customers, or if we provide a higher carbon footprint figure than customers expect, we may also lose market share, which may have an adverse affect on our financial condition and results of operations.

Further, energy costs in general could increase significantly due to climate change regulations. Therefore, our energy costs may increase significantly if utility or power companies pass on their costs, fully or partially, such as those associated with carbon taxes, emission cap and carbon credit trading programs.

In addition, more frequent droughts and floods, extreme weather conditions and rising sea levels could occur due to climate change. The impact of such changes could be significant as our facilities are located on Taiwan, which is an island. For example, transportation suspension caused by extreme weather conditions could harm the delivery of our supplies and the distribution of our products. We cannot predict the economic impact, if any, of disasters or climate change.

Disruptions in the international trading environment may seriously decrease our international sales

A substantial portion of our net operating revenues is derived from sales to customers located outside of Taiwan. In 2008, 2009 and 2010, sales to our overseas customers accounted for 66.3%, 66.1% and 67.9%, respectively, of our net operating revenues. We expect sales to customers outside of Taiwan to continue to represent a significant portion of our net operating revenues. As a result, our manufacturing services will continue to be vulnerable to disruptions in the international trading environment, including adverse changes in foreign government regulations, political unrest and international economic downturns.

These disruptions in the international trading environment affect the demand for our manufacturing services and change the terms upon which we provide our manufacturing services overseas, which could seriously decrease our international sales.

The differences between Taiwan and U.S. accounting standards resulted in different amounts of our net income under those standards, which makes evaluating our financial performance difficult

Our financial statements are prepared under R.O.C. GAAP, which differ in many respects from U.S. GAAP. Year-to-year comparison of our financial results under R.O.C. GAAP may significantly differ from year-to-year comparison under U.S. GAAP. Largely as a result of the differences in accounting for employee bonuses for 2008 and 10% tax on undistributed earnings for 2009 and 2010, our net incomes in 2008, 2009 and 2010 under U.S. GAAP were NT$4,394 million, NT$8,755 million and NT$5,597 million (US$192.1 million), respectively, as compared to net income under R.O.C. GAAP of NT$6,314 million, NT$8,790 million and NT$5,627 million (US$193.1 million), respectively.

10

Risks Relating to Our Technologies

If we cannot respond to rapid technology changes in the semiconductor packaging and testing industry, our profitability will suffer

The semiconductor packaging and testing industry is characterized by rapid increases in the diversity and complexity of semiconductor packaging and testing services. As a result, we expect that we will need to continue to develop and offer more advanced packaging and testing processes in order to respond to our customers’ requirements as industry conditions change. Developing and maintaining advanced packaging and testing processes requires significant research and development and capital expenditures.

In addition, advances in technology typically lead to rapid and significant price erosion and decreased margins for older manufacturing services and may cause our current manufacturing services to become less competitive. Our failure to develop or obtain advanced packaging or testing designs will materially and adversely affect our mix of manufacturing services and would harm our profitability.

If we are unable to successfully perform manufacturing services within the acceptable range of precision, we will not be able to achieve satisfactory production yields and our results of operations will suffer

The semiconductor packaging and testing processes are complex and involve a number of precise steps. Defective packaging and testing can result from a number of factors, including:

• the level of contaminants in the manufacturing environment;

• human error;

• equipment malfunction;

• incorrect process condition setting;

• use of defective raw materials; and

• inadequate sample testing.

From time to time, we expect to experience lower than anticipated production yields as a result of the above factors, particularly in connection with the expansion of our capacity or change in our processing methods. In addition, our yield provided by new manufacturing services will be lower than average as we develop the necessary expertise and experience to perform those manufacturing services. If we fail to maintain high quality production standards, our reputation may suffer and our customers may cancel their orders or ask for discount.

We rely on technology provided by third parties

We rely on certain technologies that we have obtained through alliances or licenses. For example, we have licensed from Freescale Semiconductor Inc., or Freescale, formerly part of Motorola, Inc., or Motorola, the technology for ball grid array. We make royalty payments to Freescale and have the license to use this technology until December 2015. We also implement new package technologies by entering into technology alliances and by licensing package technologies from certain technology companies. There can be no assurance that third parties will continue to license advanced technologies to us on terms satisfactory or acceptable to us after these licensing agreements expire, or at all. In the event that we are unable to license such advanced technologies from the third parties, we may be required to develop designed around technologies internally. There can be no assurance that we will be able to develop such technologies internally.

11

Disputes over intellectual property rights could be costly and could deprive us of technologies to stay competitive

We may suffer legal liabilities and damages if we infringe on the proprietary rights of others or incur costs resulting from legal claims and adverse proceedings against us. Despite this, we have no means of knowing what patent applications have been filed in the United States or elsewhere until they are granted or published. The semiconductor industry is characterized by frequent litigation regarding patent and other intellectual property rights, although such litigations in the semiconductor packaging and testing industry tend to not be so prevalent. If any third party were to make valid intellectual property infringement claims against us or our customers, we could be required to:

• discontinue using disputed process technologies which would prevent us from offering some of our packaging and testing services;

• pay substantial monetary damages;

• seek to develop non-infringing technologies, which may not be feasible; or

• seek to acquire licenses to the infringed technology, which may not be available on commercially reasonable terms, if at all.

We could also be required to expend substantial resources to defend any claim alleging our infringement of patents or other intellectual property rights. If we fail to obtain necessary licenses or if litigation relating to patent infringement or other intellectual property matters occurs, it could seriously harm our company.

In addition, we have acquired patents and trademarks to protect some of our proprietary technologies and manufacturing services. We cannot assure you, however, that these measures will provide meaningful protection of our intellectual property. For example, our competitors may be able to develop similar or superior manufacturing service technology, or we may not successfully protect or enforce our intellectual property rights.

On March 1, 2006, we were informed of a lawsuit, or the California Litigation, brought by Tessera Inc., or Tessera, in the United States District Court for the Northern District of California against us, our subsidiary Siliconware U.S.A., Inc. and five other semiconductor companies and their subsidiaries. Tessera alleges that some of our packaging services infringe patents owned by Tessera and that we have breached license agreements with Tessera. In May 2007, the parties stipulated a stay pending a final determination of an investigation directed against other parties (including certain co-defendants in the California Litigation) conducted by the U.S. International Trade Commission, or the ITC. Pursuant to the stipulation, the court has stayed the litigation. In February 2007, we filed requests for reexamination of five patents with the U.S. Patent and Trademark Office, or the PTO, four of which being asserted by Tessera against us in the California Litigation. The PTO has rejected part of the asserted patent claims on the grounds that each claim is invalid in view of certain prior art, and part of the asserted patent claims have been confirmed by the PTO. Tessera has appealed some of these decisions to the Board of Patent Appeals and Interferences. Because litigation is inherently unpredictable, we are unable to predict the ultimate outcome of any dispute. We are vigorously defending against Tessera’s allegations. If the Tessera disputes are not resolved in our favor, we may be forced to pay significant monetary damages, which could have a material adverse effect on our business and results of operations. For more information, see “Item 4. Information on the Company — B. Business Overview — Litigation.”

Political and Economic Risks

We face substantial political risks associated with doing business in Taiwan, particularly due to the tense relationship between the Republic of China, or the R.O.C., and the PRC

Our principal executive offices and all of our assets are substantially located in Taiwan. Accordingly, our services, financial condition and results of operations and the market price of our common shares and the ADSs may be affected by changes in R.O.C. governmental policies, taxation, inflation or interest rates and by social instability and diplomatic and social developments in or affecting Taiwan which are outside of our control. Taiwan has a unique international political status. Since 1949, Taiwan and the Chinese mainland have been separately governed. The PRC claims that it is the sole government in China and that Taiwan is part of China. Although significant economic and cultural relations have been established during recent years between the R.O.C. and the PRC, relations have often been strained. The PRC government has refused to renounce the use of military force to gain control over Taiwan and, in March 2005, further passed an Anti-Secession Law that authorizes non-peaceful means and other necessary measures should Taiwan move to gain independence from the PRC. Past developments in relations between the R.O.C. and the PRC have on occasion depressed the market prices of the securities of companies in the R.O.C. The R.O.C. also maintains important trade relations with the US, which has sometimes led to increased friction between the US and the PRC. Any deterioration in relations among the US, the R.O.C. and the PRC and other factors affecting military, political or economic conditions in Taiwan could materially and adversely affect our financial condition and results of operations, as well as the market price and the liquidity of our securities.

12

The trading price of our American Depositary Shares may be adversely affected by the general activities of the Taiwan Stock Exchange and U.S. stock exchanges, the trading price of our shares, fluctuations in interest rates and the economic performance of Taiwan and global markets

Our shares are listed on the Taiwan Stock Exchange. The trading price of our ADSs may be affected by the trading price of our shares on the Taiwan Stock Exchange. The Taiwan Stock Exchange is a smaller market and, more volatile than the securities markets in the United States and a number of European countries. The Taiwan Stock Exchange has experienced substantial fluctuations in the prices and volumes of sales of listed securities, and there are currently limits on the range of daily price movements on the Taiwan Stock Exchange. During 2010, the Taiwan Stock Exchange Index peaked at 8,972.50 on December 31, 2010 and reached a low of 7,071.67 on June 9, 2010. From January 1, 2010 to December 31, 2010, daily closing values of our shares ranged from NT$28.45 per share to NT$47.70 per share. The Taiwan Stock Exchange is particularly volatile during times of political instability, including when relations between Taiwan and the PRC are strained. Moreover, the Taiwan Stock Exchange has experienced problems including market manipulation, insider trading and settlement defaults. The recurrence of these or similar problems could decrease the market price and liquidity of our shares and ADSs.

The market price of the ADSs may also be affected by general trading activities on the U.S. stock exchanges, which have experienced significant price volatility with respect to shares of technology companies. Fluctuations in interest rates and other general economic conditions, such as recession and economic downturns caused by the sub-prime crisis, high energy costs and other concerns, in Taiwan and other countries where our products are sold may also have an effect on the market price of our ADSs. Daily closing values of our ADSs ranged from US$1.88 to US$12.54 between June 7, 2000, the date on which our ADSs were listed on NASDAQ National Market, or NASDAQ, and December 31, 2010. Over the same period, the NASDAQ Composite Index ranged from 1,114.11 to 4,274.67.

Currency fluctuations could increase our costs relative to our revenues, which could adversely affect our profitability

Volatility in foreign exchange rates may have a material effect on our business. We are affected by fluctuations in exchange rates among the U.S. dollar, the Japanese Yen, the NT dollar and other currencies. Some of our net operating revenues are denominated in currencies other than NT dollars, such as U.S. dollars, while more than half of our costs of direct labor, raw materials and overhead are incurred in NT dollars. Therefore, any significant fluctuation in exchange rates could be harmful to our financial condition. In 2010, the foreign exchange rate between the U.S. dollar and the NT dollar has ranged from a high of NT$32.43 per US$1.00 to a low of NT$29.14 per US$1.00. Fluctuations in the exchange rate between the U.S. dollar and the NT dollar will also affect the U.S. dollar value of the ADSs and the U.S. dollar value of any cash dividends we pay, which could have a corresponding effect on the market price of the ADSs.

Any future outbreak of contagious diseases may materially and adversely affect our manufacturing services and operations, as well as our financial condition and results of operations

Any future outbreak of contagious diseases, such as severe acute respiratory syndrome, H1N1 swine influenza or avian influenza, may disrupt our ability to adequately staff our manufacturing services, and may generally disrupt our operations. In 2009, there were reports of outbreaks of a new influenza caused by the H1N1 swine influenza virus in certain regions of Asia (including Taiwan), the US and Europe. The World Health Organization had raised the level of pandemic alert to indicate a significant increase in risk of H1N1 swine influenza. Although the world is now in the post-pandemic period, H1N1 swine influenza is expected to continue to circulate as a seasonal virus for some years to come. An outbreak of influenza on the human population could result in a widespread health crisis which could adversely affect the economies and financial markets of many countries, particularly in Asia. There is no guarantee that any future outbreak of contagious diseases or the measures taken by various countries of the world in response to a future outbreak of contagious diseases will not seriously interrupt our operations or those of our suppliers and customers. If any of our employees is suspected of having contracted any contagious disease, we may, under certain circumstances, be required to quarantine such employees and the affected areas of our premises. As a result, we may have to temporarily suspend part or all of our operations. Furthermore, any future outbreak may restrict the level of economic activity in affected regions, including Taiwan, which may also adversely affect our manufacturing services and prospects. As a result, we cannot assure you that any future outbreak of contagious diseases would not have a material adverse effect on our financial condition and results of operations.

13

Our future tax obligations may adversely affect our profitability

TheAmendments of the Income Tax Law promulgated on May 27, 2009 reduced the income tax rate for profit-seeking enterprises from 25% to 20%, which is effective from January 1, 2010. However, the corporate income tax rate is further reduced from 20% to 17%, which is effective from January 1, 2010, based on theAmendments of the Income Tax Law promulgated on June 15, 2010. In addition, according to the Industrial Innovation Act issued on May 12, 2010, the deductible rate of investment tax credit for qualifying research and development expenditures was reduced from 30% to 15% starting January 1, 2010. Any reduction or elimination of our preferential tax benefits would increase our tax obligations and could have an adverse effect on our results of operations.

Risks Relating to the PRC

Our operations in the PRC may expose us to political, regulatory, economic and foreign investment risks in the PRC

Some of our customers and foreign competitors have expanded their operations to the PRC. In order to remain competitive and to position ourselves to gain market share, we established a subsidiary named Siliconware Technology (Suzhou) Limited, or Siliconware Suzhou, in 2002, which currently is primarily engaged in the assembly and testing service. Prior to 1978, the PRC operated under a central economic planning system. All production and economic activities in the country were governed by the economic goals set out in the five-year plans and annual plans adopted by central authorities. Since 1978, the PRC government has permitted foreign investment and implemented economic reforms, gradually changing from a planned economy to a market-oriented economy. However, many of the reforms and economic policies adopted or to be adopted by the PRC government are unprecedented or experimental in nature and may have unforeseen results, which may have an adverse effect on enterprises with substantial business in the PRC, including us.

Since 1979, many laws and regulations dealing with general economic matters or particular economic activities have been promulgated in the PRC. However, enforcement of existing laws and regulations may be uncertain and sporadic and implementation and interpretation thereof may be inconsistent. The PRC judiciary is relatively inexperienced and underdeveloped in enforcing the laws and regulations that currently exist, leading to a degree of uncertainty as to the outcome of any litigation. Further, it may be difficult to obtain swift and equitable enforcement or to obtain enforcement of a judgment by a court of another jurisdiction. The PRC’s legal system is based on written statutes and, therefore, decided legal cases do not have binding legal effect, although they are often followed by judges as guidance. The introduction of new PRC laws and regulations and the interpretation of existing laws and regulations may be subject to policy changes reflecting domestic political or social changes. As the PRC legal system develops, there can be no assurance that changes in such legislation or interpretation thereof would not have a material adverse effect on our business, financial condition, results of our operations and future prospects.

14

The discontinuation of any preferential tax treatment currently available to us and the increase in the enterprise income tax in the PRC could adversely affect our results of operations

Prior to January 1, 2008, the basic income tax rate for foreign-invested enterprises in the PRC was 33% (30% enterprise income tax and 3% local income tax). However, the PRC government provided various incentives, including reduced tax rates and other measures, to foreign-invested enterprises and companies that meet certain criteria. Our subsidiary Siliconware Suzhou was qualified for the favorable tax treatment and was entitled to a preferential enterprise income tax rate of 15%. In addition, Siliconware Suzhou is a foreign-invested manufacturing enterprise with an approved term of more than ten years. Thus, Siliconware Suzhou is entitled to a two-year exemption from the enterprise income tax from the first profitable year of operation, and a 50% relief from the enterprise income tax for the subsequent three years. Under the PRC Enterprise Income Tax Law, or the EIT Law, which took effect on January 1, 2008, the PRC adopted a uniform income tax rate of 25% for all enterprises in China (including foreign-invested enterprises) and revoked many of the current tax exemption, reduction and preferential treatments applicable to foreign-invested enterprises. However, a transition period for enterprises, whether foreign-invested or domestic, that were subject to an enterprise income tax rate lower than 25% prior to the effective date allows these enterprises to continue enjoying the lower rate and gradually transit to the new tax rate within five years after the effective date of the EIT Law. Enterprises that are currently entitled to exemptions or reductions from the standard income tax rate for a fixed term may continue to enjoy such treatment until the fixed term expires. However, for foreign-invested enterprises, which are currently entitled to the two-year exemption and the subsequent three-year 50% relief from enterprise income tax but have not yet experienced the first profitable year, the two-year exemption begins from January 1, 2008, regardless of whether such enterprise is profitable at that time.

We cannot assure you that the current preferential tax treatments and the current level of the enterprise income tax enjoyed by our PRC operating subsidiary will continue, and any legislative changes to the tax regime could discontinue any preferential tax treatment applicable to our subsidiary in the PRC.

Changes in PRC foreign exchange regulations may adversely affect our results of operations and financial condition

The exchange rate between the Renminbi and the U.S. dollar and other foreign currencies is affected by, among other things, changes in China’s political and economic conditions. On July 21, 2005, the PRC government changed its decade-old policy of pegging the value of the Renminbi to the U.S. dollar. Under the new policy, the Renminbi is permitted to fluctuate within a narrow and managed band against a basket of foreign currencies. Since July 2008, however, the Renminbi has traded within a narrow range against the US dollar. On June 20, 2010, the People’s Bank of China announced that the PRC government would further reform the Renminbi exchange rate regime and increase the flexibility of the exchange rate. Following the removal of the U.S. dollar peg, the Renminbi appreciated 20.3% against the U.S. dollar between July 21, 2005 and December 31, 2010. Although it is difficult to predict how this new policy may impact the Renminbi exchange rates, a more flexible currency policy could result in a further and more significant appreciation of Renminbi against the U.S. dollar. Any increase in the value of the Renminbi might adversely affect the growth of the Chinese economy, increase our operating expenses as well as the competitiveness of various industries in China, including our industry, which could in turn affect our financial condition and results of operations.

An increase in labor costs may undermine our cost competitiveness, erode our profitability and thus affect our financial performance

We, along with our suppliers and customers, rely on our workers in our various manufacturing facilities. Labor costs in the various countries where we have manufacturing facilities may increase as those countries develop and have populations that are more affluent. For example, recent labor strikes by factory workers agitating for higher wages have occurred in China. We have been adjusting the wages of our workers in line with market conditions. In addition, increased labor costs of our suppliers could be passed along to us.

These increases in labor cost may undermine our cost competitiveness, erode our profitability and materially harm our business, financial condition and results of operations.

15

Risks Related to Ownership of Our Shares or ADSs

Restrictions on the ability to deposit shares into our ADS program may adversely affect the liquidity and price of the ADSs

The ability to deposit shares into our ADS program is restricted by R.O.C. law. Under current R.O.C. law, no person or entity, including you and us, may deposit shares into our ADS program without specific approval of the R.O.C. Securities and Futures Bureau, or R.O.C. SFB except for the deposit of the shares into our ADS program and for the issuance of additional ADSs in connection with:

• distribution of share dividends or free distribution of our shares;

• exercise of the preemptive rights of ADS holders applicable to the shares evidenced by ADSs in the event of capital increases for cash; or

• if permitted under the deposit agreement and the custody agreement, purchases of our shares in the domestic market in Taiwan by the investor directly or through the depositary or the surrender of shares under the possession of investors and then delivery of such shares to the custodian for deposit into our ADS program, subject to the following conditions: (i) the depositary may accept deposit of those shares and issue the corresponding number of ADSs with regard to such deposit only if the total number of ADSs outstanding after the deposit does not exceed the number of ADSs previously approved by R.O.C. SFB, plus any ADSs issued pursuant to the events described in the above two bullet points; and (ii) this deposit may only be made to the extent previously issued ADSs have been cancelled.

As a result of the limited ability to deposit shares into our ADS program, the prevailing market price of our ADSs on NASDAQ, may differ from the prevailing market price of the equivalent number of our shares on the Taiwan Stock Exchange.

Holders of our ADSs will not have the same proposal or voting rights as the holders of our shares, which may affect the value of your investment

Due to the amendment to the R.O.C. Company Act and the amendment made to our articles of incorporation accordingly, except for treasury shares, each common share is generally entitled to one vote and no voting discount will be applied. However, except as described in this annual report and in the deposit agreement, holders of our ADSs will not be able to exercise voting rights attaching to the shares evidenced by our ADSs on an individual basis. Holders of our ADSs will appoint the depositary or its nominee as their representative to exercise the voting rights attaching to the shares represented by the ADSs. The voting rights attaching to the shares evidenced by our ADSs must be exercised as to all matters brought to a vote of shareholders collectively in the same manner.

Moreover, holders of the ADSs do not have individual rights to propose any matter for shareholders’ votes at our shareholders’ meetings. However, holders of at least 51% of the ADS outstanding at the relevant record date may request the depositary to submit to us one proposal per year for consideration at our annual ordinary shareholders’ meeting, provided that such proposal meets certain submission criteria and limitations, including the language and the length of the proposal, the time of submission, the required certification or undertakings, and the attendance at the annual ordinary shareholders’ meeting. A qualified proposal so submitted by the depositary will still be subject to review by our board of directors and there is no assurance that the proposal will be accepted by our board of directors for inclusion in the agenda of our annual ordinary shareholders’ meeting. Furthermore, if we determine, at our discretion, that the proposal submitted by the depositary does not qualify, we have no obligation to notify the depositary or to allow the depositary to modify such proposal.

Furthermore, if holders of at least 51% of the ADSs outstanding at the relevant record date instruct the depositary to vote in the same manner regarding a resolution, including election of directors, the depositary will appoint our Chairman, or his designee, to represent the ADS holders at the shareholders’ meetings and to vote the shares represented by the ADSs outstanding in the manner so instructed. If by the relevant record date the depositary has not received instructions from holders of ADSs holding at least 51% of the ADSs to vote in the same manner for any resolution, then the holders will be deemed to have instructed the depositary to authorize and appoint our Chairman, or his designee, to vote all the shares represented by ADSs at his sole discretion, which may not be in your interest.

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The rights of holders of our ADSs to participate in our rights offerings may be limited, which may cause dilution to their holdings

We may from time to time distribute rights to our shareholders, including rights to acquire our securities. Under the deposit agreement, the depositary will not offer those rights to ADS holders unless both the rights and the underlying securities to be distributed to ADS holders are either registered under the Securities Act or exempt from registration under the Securities Act. We are under no obligation to file a registration statement with respect to any such rights or underlying securities or to endeavor to cause such a registration statement to be declared effective. Accordingly, holders of our ADSs may be unable to participate in our rights offerings and may experience dilution in their holdings.

Our public shareholders may have more difficulty protecting their interests than they would as shareholders of a U.S. corporation

Our corporate affairs are governed by our articles of incorporation and by laws governing R.O.C. corporations. The rights of our shareholders to bring shareholders’ suits against us or our board of directors under R.O.C. law are much more limited than those of the shareholders of U.S. corporations. Therefore, our public shareholders may have more difficulty protecting their interests in connection with actions taken by our management, members of our board of directors or controlling shareholders than they would as shareholders of a U.S. corporation. Please refer to “Item 10. Additional Information—B. Memorandum and Articles of Association” included elsewhere in this annual report for a detailed discussion of the rights of our shareholders to bring legal actions against us or our directors under R.O.C. law.

Holders of our ADSs will be required to appoint several local agents in Taiwan if they withdraw shares from our ADS program and become our shareholders, which may make ownership burdensome

Non-R.O.C. persons wishing to withdraw shares represented by their ADSs from our ADS program and hold our shares represented by those ADSs are required to appoint a local agent or representative with qualifications set forth by the R.O.C. SFB to open a securities trading account with a local brokerage firm, pay R.O.C. taxes, remit funds and exercise shareholders’ rights. In addition, the withdrawing holders are also required to appoint a custodian bank with qualifications set forth by the Ministry of Finance to hold the securities in safekeeping, make confirmations, settle trades and report all relevant information. Without making this appointment and opening of the accounts, the withdrawing holders would not be able to subsequently sell our shares withdrawn from a depositary receipt facility on the Taiwan Stock Exchange. Under R.O.C. law and regulations, citizens of the PRC are not permitted to hold our shares or withdraw shares represented by ADSs from our ADS program.

You may not be able to enforce a judgment of a foreign court in the R.O.C.

We are a company limited by shares incorporated under the R.O.C. Company Act. Most of our assets and most of our directors, supervisors and executive officers and experts named in the registration statement are located in Taiwan. As a result, it may be difficult for you to enforce judgments obtained outside Taiwan upon us or such persons in Taiwan. Any judgment obtained against us in any court outside the R.O.C. arising out of or relating to the ADSs will not be enforced by R.O.C. courts if any of the following situations shall apply to such final judgment:

• the court rendering the judgment does not have jurisdiction over the subject matter according to R.O.C. law;

• the judgment or the court procedures resulting in the judgment is contrary to the public order or good morals of the R.O.C.;

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• the judgment was rendered by default, except where the summons or order necessary for the commencement of the action was duly served on us within the jurisdiction of the court rendering the judgment within a reasonable period of time and in accordance with the laws and regulations of such jurisdiction, or with judicial assistance of the R.O.C.; or

• the judgments of R.O.C. courts are not recognized and enforceable in the jurisdiction of the court rendering the judgment on a reciprocal basis.

We may become a passive foreign investment company, or PFIC, which could result in adverse U.S. tax consequences to U.S. investors

Based upon the past and projected composition of our income and valuation of our assets, including goodwill, we believe we were not a passive foreign investment company, or PFIC, for 2010, and do not expect to become one in the future, although there can be no assurance in this regard. If, however, we were or were to become a PFIC, such characterization could result in adverse U.S. tax consequences to you if you are a U.S. investor. For example, if we are a PFIC, our U.S. investors will become subject to increased tax liabilities under U.S. tax laws and regulations and will become subject to burdensome reporting requirements. The determination of whether or not we are a PFIC is made on an annual basis and will depend on the composition of our income and assets from time to time. Specifically, we will be classified as a PFIC for U.S. tax purposes if either: (i) 75% or more of our gross income in a taxable year is passive income, or (ii) the average percentage of our assets by value in a taxable year which produce or are held for the production of passive income (which includes cash) is at least 50%. The calculation of the value of our assets will be based, in part, on the quarterly market value of our shares, which is subject to change. We cannot assure you that we will not be a PFIC for 2011 or any future taxable year. See “Taxation — U.S. Federal Income Tax Considerations for U.S. Persons — Passive Foreign Investment Company.”

Item 4. Information on the Company

A. History and Development of the Company

Our legal and commercial name is Siliconware Precision Industries Co., Ltd. We were incorporated under the R.O.C. Company Act as a company limited by shares on May 17, 1984. We provide services in Taiwan through our facilities located in Taichung, Hsinchu and Changhua. Our principal executive offices are located at No. 123, Sec. 3, Da Fong Road, Tantzu, Taichung, Taiwan, Republic of China, and the telephone number is 886-4-2534-1525. Our Internet website address iswww.spil.com.tw. Our shares were listed on the Taiwan Stock Exchange in 1993. On June 7, 2000, we issued 30,000,000 ADSs, each representing five shares. Our ADSs have been listed on the NASDAQ National Market under the symbol “SPIL” since June 2, 2000. In 2002, we established Siliconware Suzhou in PRC, a wholly-owned subsidiary to provide assembling and testing service in Suzhou, China. On August 31, 2009, we merged our wholly-owned subsidiary, Siliconware Investment Company Ltd., in order to simplify our investment structure and reduce management costs. In November 2009, we acquired a factory and its adjacent facility at a price of NT$1,780 million from Powerchip Semiconductor Corporation for capacity expansion.

Taiwan is home to the world’s largest independent wafer foundries and as such is home to one of the world’s leading suppliers of outsourcing semiconductor manufacturing. Our close proximity to and relationships with Taiwan’s leading wafer foundries allow us to benefit significantly from the trend towards outsourcing in the semiconductor industry and to quickly respond to our customers’ needs. Our location in Taiwan also enables our customers to secure seamless services within Taiwan for all of their manufacturing needs, thereby minimizing the time required to deliver finished semiconductor devices to the market.

For information relating to our capital expenditure, see “— B. Business Overview — Capital Expenditures and Divestitures”.

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B. Business Overview

Our Business

We are one of the world’s leading independent providers of semiconductor packaging and testing services. We offer a full range of packaging and testing solutions, including substrate packages and lead-frame packages, as well as testing for logic, mixed signal and embedded memory devices. We also offer our customers turnkey service, from packaging and testing to shipment service.

We provide packaging and testing services to more than 100 customers worldwide. For 2010, our top customers included the following leading semiconductor suppliers: Advanced Micro Devices Inc., Broadcom Corporation, Intel Corporation, MediaTek Inc., Marvell Semiconductor Inc., NVIDIA Corp., SanDisk Corporation and Xilinx, Inc. We currently target customers in the personal computer, communications, consumer Integrated Circuits (ICs) and non-commodity memory semiconductor markets. We strive to provide the highest level of customer service to meet and anticipate our customers’ current and future requirements.

The manufacturing services we offer are customized to the needs of our individual customers. In 2010, 84.8% of our net operating revenues were from packaging services and 15.2% of our net operating revenues were from testing and other services. The following table shows, for the periods indicated, the amount of our packaging and testing revenues by categories of manufacturing services and the revenues from the manufacturing services we provide as a percentage of our total net operating revenues:

	Years Ended December 31,
	2008				2009				2010
	NT$		%		NT$		%		NT$		%
	(in millions, except percentages)
Substrate base packages		31,243		50.1		30,242		51.0		32,816		51.4
Lead-frame base packages		18,473		29.6		18,235		30.8		18,793		29.4
Other packages		4,064		6.5		2,880		4.8		2,531		4.0
Total packaging revenues		53,780		86.2		51,357		86.6		54,140		84.8
Testing and other revenues		8,623		13.8		7,938		13.4		9,717		15.2
Total net operating revenues		62,403		100.0		59,295		100.0		63,857		100.0

Our objective is to be the leading worldwide, full service independent provider of semiconductor packaging and testing services. Key elements of our strategy include:

• providing a full range of packaging and testing services, including turnkey capabilities to simplify our customers’ supply chain management;

• offering leading packaging and testing technology to attract and retain customers;

• focusing on customer service and working with our customers on developing and fulfilling their current and future semiconductor packaging and testing needs;

• leveraging our existing foundry relationships and Taiwan location to enable our customers to easily integrate all of their outsourced semiconductor manufacturing needs; and

• diversifying and expanding our customer base geographically, by customer type and by end-market application, to capitalize on growing markets including communications and increased outsourcing from vertically integrated semiconductor device manufacturers and systems original equipment manufacturers.

Because our services are, and will continue to be, dependent on the requirements of semiconductor companies for independent testing and assembly services, any downturn in the highly cyclical semiconductor industry may reduce demand for our services and adversely affect our results of operations. Therefore, our operations are subject to seasonal effects.

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Our Packaging Services

We offer a broad range of package formats designed to provide our customers with a full array of packaging solutions. The packaging solutions we currently offer to our customers include substrate packages, which include ball grid array and system in packages (incorporating multiple semiconductor chips) and flip-chip ball grid array packages, together with lead-frame packages. Our flip-chip ball grid array packages are based on the Flex-On-Cap wafer bumping and redistribution technologies. Semiconductor packaging serves to protect semiconductor chips, to facilitate their integration into electronic systems and to enable the dissipation of heat produced by the final product. The packaging process begins with dicing patterned silicon wafers into separated dies. Each die is attached to a substrate or lead-frame by die-attached material. Substrate or leads on the lead-frame are then connected by extremely fine gold wires to the input/output terminals on the chip, using machines called wire bonders. Each chip is then encapsulated, generally in a plastic casing molded from a molding compound, with only the leads protruding from the finished casing. To complete the packaging process, excess molding compound is eliminated from the packaged semiconductor chip and the leads are trimmed and formed into various shapes.

Semiconductor packages have evolved from lead-frame packages to substrate packages in response to the increasing demands of today’s high-performance electronics products. The differentiating characteristics of these packages include:

• the size of the package;

• the number of electrical connections the package can support; and

• the thermal and electrical requirements of the package.

As modern applications for semiconductor devices require smaller chips, the size of packages has also decreased. In leading-edge packages, the size of the package is miniaturized to just slightly larger than the size of the individual chip itself known as chip scale packages.

As semiconductor devices increase in complexity, the number of required electrical connections also increases. Our lead-frame packaging has electrical connections from the semiconductor device to the electronic product through leads on the perimeter of the package. Our substrate packaging has balls on the bottom of the package that create the electrical connections with the electronic system and can support larger numbers of electrical connections.

New methods of packaging have also enhanced the thermal and electrical characteristics of semiconductor packages to meet the high-bandwidth, high-speed and high-power demands of modern semiconductor devices. Flip-chip packages enable direct interconnection from the chip to the substrate. Electrical connection is first deposited on one side of a chip; then, the chip is flipped onto the substrate. Flip-chip technology eliminates the need for wire bonding and provides superior electrical performance. Chip scale packages have been designed for devices which require reduced height, board space and weight by reducing the size of the package to be only slightly larger than the size of the die and are ideally suited for the latest generation of wireless and consumer electronics. System in packages allow for the combination of multiple chips into a single package, enabling increased application functionality while miniaturizing overall size.

We price our packaging on a per unit basis, taking into account the complexity of the manufacturing required, the prevailing market conditions, the order size, the strength and history of our relationship with the customer and our capacity utilization at the time.

In order to reduce the impact from fluctuations in the price of gold wire, we have also been improving our manufacturing process to reduce the diameters of the gold wire used. In addition, we have developed and currently offer copper wire bonding processes to replace conventional processes based on gold wire. Copper wire bonding processes has gained popularity recently due to the fact that copper prices do not fluctuate as widely as gold prices. Presently, copper wire bonding is running at a high growth stage of production for lead-frame and substrate packaging.

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Substrate Packages

This category generally employs the ball grid array design, which utilizes a laminated substrate rather than a lead-frame and places the electrical connections on the bottom of the package rather than around the perimeter.

The ball grid array format was developed to address the need for higher lead counts required by advanced semiconductor devices. Benefits of ball grid array packaging over leaded packaging include:

• smaller size;

• greater pin count;

• greater reliability;

• better electrical signal integrity; and

• easier attachment to a printed circuit board.

As the number of leads surrounding the package increased, the proximity of the leads to one another became closer in an attempt to maintain the size of the package. The close proximity of one lead to another resulted in electrical shorting problems, and required the development of increasingly sophisticated and expensive techniques for producing circuit boards to accommodate the high number of leads.

The ball grid array format solved this problem by effectively creating leads on the bottom of the package in the form of solder balls. These balls can be evenly distributed across the entire bottom surface of the package, allowing greater distance between the individual leads. For the highest lead count devices, the ball grid array configuration can be manufactured less expensively and requires less delicate handling at installation.

To address the electronics market demand for higher frequency, higher input/output and better thermal performance, we have made efforts to develop high value-added advanced packaging technologies, such as flip-chip and wafer bumping technologies. In addition to the development of the 8-inch wafer bumping technology, in order to meet the trend of wafer size moving to 12-inch from 8-inch, we successfully established the first 12-inch wafer bumping technology in the world. Flip-chip ball grid array is a high-end, high-growth packaging technology typically used in advanced semiconductor products such as microprocessor units, micro peripherals, field programmable gate arrays and application specific ICs. The flip-chip technology enables direct interconnection from the chip to the substrate, eliminates the need for wire bonding and provides superior electrical performance. We have also developed thin and small package, or CSPs, on flexible or rigid substrates as well as lead-frames, which are suitable for the portable consumer market. Furthermore, we have developed module packages, with multiple chips integrated into one package, in order to meet the growing demand for “system-in-package,” or SIP, for applications in personal computers, communications devices and consumer products.

Lead-Frame Packages

Lead-frame packages are characterized by a semiconductor chip encapsulated in a plastic molding compound with metal leads on the perimeter. This package category has evolved from a design where the leads are plugged into holes on the circuit board to a design where the leads are soldered to the surface of the circuit board. Lead-frame packages are divided into two general types of packages: quad flat packages and small outline packages.

To satisfy the demand for miniaturization of portable electronic products, we are developing increasingly smaller versions of lead-frame packages to keep pace with continually shrinking semiconductor device sizes. Our advanced lead-frame packages are similar in design to our older lead-frame packages. However, our advanced lead-frame packages generally are thinner and smaller, have more leads and have advanced thermal and electrical characteristics. As a result of continued development of manufacturing service technology, we offer lead-frame packaging with a wide range of lead counts and body sizes to satisfy variations in the size of customers’ semiconductor devices.

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Testing and Other Services

Semiconductor testing measures and ensures the performance, functionality and reliability of a packaged semiconductor device. Testing semiconductor devices requires significant technical expertise and knowledge of the specific applications and functions of the device under testing. In addition to maintaining different types of advanced testing equipment which enable us to test a variety of semiconductor device functions, we work closely with our customers to develop and convert programs to test particular semiconductor products on multiple equipment platforms effectively. The cost of any specific test is dependent on the test time (usually measured in seconds) required to run a test which varies depending on the complexity of the semiconductor device and the customer’s specification with the percentage of fault coverage.

We also provide a variety of testing services as the following:

Wafer Probing. Wafer probing is the step immediately before packaging of ICs and involves sorting the processed wafer for defects to ensure that it meets customer acceptance criteria. ICs on an accepted wafer are then individually inspected visually under microscopes before packaging and final testing.

Final Testing. We provide final testing services for a wide variety of logic and mixed signal and RF ICs packages, Memory card and other IC packages, including complex and high-performance ICs, as well as lower-performance ones. High-performance products include personal computer-related components such as CPU chipsets and graphic processors, while major lower-performance products include ICs used in consumer electronics products.

Other Testing Services. In addition to wafer probing and final testing services described above, we also provide “system-level testing” service for testing products on motherboards, “lead/ball scanner” service to screen out abnormal products, including bent lead or ball defective devices, so as to prevent them from being shipped to the end customers, “marking” service to specify the unique customer logo and batch identification on products and “tape and reel” service to packaging devices into one complete reel for surface mount operation.

Customers

We currently have more than 100 customers worldwide, and our customers include many of the largest semiconductor companies in the world. In 2008, 2009 and 2010, 56.6%, 60.0% and 56.4% of our net operating revenues were derived from sales to our top ten customers, respectively. In 2010, our top two customers provided approximately 10.0% and 9.9%, respectively, of our net operating revenues. Our representative customers as of December 31, 2010 include Advanced Micro Devices Inc., Broadcom Corporation, Intel Corporation, MediaTek Inc., Marvell Semiconductor Inc., NVIDIA Corp., SanDisk Corporation and Xilinx, Inc.

Industry-leading companies require early access to advanced packages because they manufacture products which have first-to-market technologies. Our close relationships with industry-leading customers help us further develop their technologies and position us to benefit from the high unit volumes of these major semiconductor customers.

Set forth below is a geographic breakdown of our net operating revenues for the periods presented below, categorized by geographic region based on the jurisdiction in which each customer is headquartered:

	Years Ended December 31,
	2008				2009				2010
	NT$		%		NT$		%		NT$		%
	(in millions, except percentages)
U.S. and Canada		32,300		51.8		29,875		50.4		31,324		49.1
Taiwan		21,021		33.7		20,098		33.9		20,512		32.1
Others(1)		9,082		14.5		9,322		15.7		12,021		18.8
Total		62,403		100.0		59,295		100.0		63,857		100.0

(1) Include primarily Singapore, Germany and Korea.

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Sales from outside of Taiwan accounted for 66.3%, 66.1% and 67.9% of our net operating revenues in 2008, 2009 and 2010, respectively. We primarily target U.S. and Canadian semiconductor companies that contract their wafer foundry services to major independent R.O.C. foundries. Our U.S. and Canadian customers, including AMD and NVIDIA Corp., are world-leading suppliers of graphic chipsets. Our U.S. customers mainly require quad flat packages and substrate packages. We also focus on marketing our packaging and testing services in Japan and Europe to increase sales to these two areas.

We believe we have benefited from our location in Taiwan where outsourced semiconductor manufacturing infrastructure is well established. Our long-term relationships with two of the world’s largest independent wafer foundries are important to the continued growth of our services. A very large portion of the semiconductor devices we package and test is manufactured in Taiwan’s leading wafer foundries. As these wafer foundries grow, we expect that their demand for our services will continue to grow. Moreover, we believe that we can leverage these relationships to jointly market seamless outsourced semiconductor manufacturing services from design to drop shipment and remain at the forefront in semiconductor technology. We also believe that our close proximity and close relationships to wafer foundries enable our customers to more efficiently manage their supply chains and find comprehensive solutions to their semiconductor needs.

Due to the fast-changing technology and functionality of semiconductor chip design, customers requiring semiconductor packaging and testing services generally do not place purchase orders far in advance. However, we engage customers in advance of the placement of purchase orders based on each customer’s expected packaging and testing requirements. In addition, we purchase materials based on customer forecasts, and our customers are generally responsible for any unused materials in excess of the quantity they indicated they would need to meet their product commitments. Although we have long-term sales relationships with a number of customers, our customers generally may cancel or reschedule orders without significant penalties. In the past, very few customers have cancelled firm orders for our packaging and testing services. This is due in part to the fact that firm orders usually immediately precede shipment of wafers to be packaged by us. Our customers, however, routinely change their forecasts for future purchases from us, and we adjust our production plans accordingly. We do not maintain reserves for customer cancellations and variations in customer orders. Accordingly, our backlog as of any particular date may not be indicative of future sales.

In addition, packaging and testing service customers generally require that our facilities undergo a stringent “qualification” process during which the customer evaluates our operations and production processes. The qualification process can take many weeks. Due to this lengthy qualification process, we believe that semiconductor manufacturers are generally reluctant to switch semiconductor packaging and testing companies once these companies have been qualified. For test qualification, after we are qualified by a customer and before the customer delivers wafers to us for testing in volume, a process known as “correlation” is undertaken. During the correlation process, the customer provides us with test criteria, information regarding process flow and sample semiconductors to be tested and either provides us with the test program or requests that we develop a new or conversion program. In some cases, the customer also provides us with a data log of results of any testing of the semiconductor that the customer may have conducted previously. The correlation process typically takes up to two weeks but can take longer depending on the requirements of the customer.

Sales and Marketing

Our sales and marketing strategy is focused on providing high-quality semiconductor device packaging and testing services, consistent on-time delivery and competitive pricing. We believe that this strategy is best implemented by servicing a select number of customers whom we consider to have a high level of anticipated growth. We cooperate with these customers to achieve their best needs.

We engage in semi-annual and quarterly reviews of all of our customers; we regularly collect data from different segments of the semiconductor industry and, when possible, we work closely with our customers to design and develop packaging and testing solutions for their new products. These “co-development” or “sponsorship” projects can be critical when customers seek large-scale, early market entry with a significant new product.

Our sales and marketing efforts are carried out by our sales team in Taichung and Hsinchu among many of Taiwan’s leading domestic semiconductor companies. In addition, our subsidiary Siliconware U.S.A., with offices in San Jose and Huntington Beach, California, Tempe, Arizona and Lewisville, Texas, which facilitate communications and maintain relationships with companies headquartered in North America. We also have established our Japan office in Tokyo and Europe office in Germany to give our customers support in closer proximity.

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Quality Control

We employ quality control procedures at every critical manufacturing stage, with the aim of identifying and solving problems at the earliest possible stage of the production process. Our quality control procedures include statistical process control, which involves sampling tests to control and monitor the production process. Such tests include optical scanning and reliability tests, which include temperature and humidity tests, pressure and stress tests and test for resistance to solvents. If a problem is detected, failure analysis will be used to determine the cause. Visual inspection and optical scanning are performed on all assembled semiconductor devices to test for lead coplanarity and integrity. Assembled chips are tested on a sample basis for open shorts in wire connections. To ensure that our quality control procedures are effectively applied, production line employees are provided with periodic training.

Our comprehensive quality control and environmental protection programs have received numerous accredited International Standards Organization certifications, including ISO 9002 in 1992, ISO 9001 in 1993, QS 9000 in 1999 and ISO 14001 in May 1999. We undergo periodic audits to maintain our ISO certifications. Although some semiconductor companies view the ISO certification as a basis for initiating contact with a potential subcontractor, they generally perform separate production and quality audits of the subcontractors themselves. We also received TS16949 certification for our quality control in 2003, OHSAS 18001 certification for safety and health management system in 2004 and QC080000 certification for hazardous substance process management in August 2008.

As a result of our ongoing focus on quality, we achieved average quarterly packaging yields of 99.8% in 2010. Packaging yield, which is the industry standard for measuring production yield, is equal to the number of IC packages that are shipped for packaging divided by the number of individual ICs that are attached to substrates or lead-frames.

As part of our overall focus on quality service, we also closely monitor our delivery performance against scheduled delivery times.

Research and Development

We focus our research and development efforts on developing advanced packaging technologies, developing testing services and improving the efficiency and capabilities of our production process technologies. We concentrate on addressing our customers’ need for innovative packages, increased performance and lower cost.

Our packaging technologies development includes:

• reduction of the size and thickness of semiconductor device packages;

• increasing input/output density of semiconductor device packages;

• enhancing the electrical, thermal and reliability performance of semiconductor device packages;

• increasing packaging yield, shortening production cycle times; and

• investigating the use of new or replacement raw materials with lower cost.

Our key areas for research and development are:

• lead-frame and substrate packaging;

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• advanced flip chip packaging;

• copper pillar bumping and packaging;

• integrated passive devices (IPD);

• System in Package (SiP) design and process technologies;

• wafer level micro-electromechanical system (MEMS) packaging;

• Through Silicon Via technology;

• Wafer Level Fan Out technology;

• vertical connection interconnection technology.

We believe that technology development is one of the key success factors in the semiconductor packaging and testing industry. We work with our customers, equipment manufacturers or materials suppliers to develop advanced processing capabilities. Moreover, we work with customers early in the process of wafer design to ensure that their packaging needs are met and that our packaging services provide our customers with the flexibility they require. Our research and development personnel are divided among our technology and package development department, design and characterization department and manufacturing technology development department. In addition, our quality assurance and manufacturing personnel also participate in research and development activities. In 2008, 2009 and 2010, our research and development expenses amounted to NT$1,383 million, NT$1,276 million and NT$1,538 million (US$52.8 million), respectively.

We maintain laboratory facilities to analyze the characteristics of semiconductor device packages by computer simulation and verify their performances by measurement devices. The use of computer-aided engineering tools substantially reduces the time required to validate the proper function of packages, as compared to physical testing methods.

Raw Materials and Equipment

Raw Materials

Our packaging operations require adequate supplies of materials and equipment on a timely basis. The principal raw materials used in packaging are substrates, lead-frames, gold wire and molding compound. We generally have not entered into long-term supply agreements and purchase our raw materials on a purchase order basis at prevailing market prices. The price of gold wire has been volatile and has fluctuated with the spot price of gold in recent years. In 2010, the spot price of gold fluctuated from a low of approximately US$1,062.6 per ounce to a high of approximately US$1,422.9 per ounce. The volatility in the price of gold wire resulted in decrease in our gross margin in 2010 compared to 2009. We have continued to implement measures to reduce our dependency on certain raw materials, such as gold wire. For example, we are continuing to develop improvements to our manufacturing process that will shorten the length and reduce the diameter of the gold wire used. In addition, we are continuing to develop copper wire bonding processes. Our major suppliers of raw materials, which include Chang Wah Electromaterials Inc., MK ELECTRON CO., LTD., Nanya Printed Circuit Board Corp., Unimicron Technology Corp., Sumitomo Metal Mining Asia Pacific Pte Ltd., and Sumitomo Bakelite (Taiwan) Co., Ltd., are leading companies in the types of materials they supply. We work closely with them and provide them with rolling forecasts. For 2008, 2009 and 2010, our raw material costs were 54.9%, 56.1% and 56.9%, respectively, of cost of goods sold.

We do not maintain large inventories of raw materials. We purchase materials based on customer forecasts, and our customers are generally responsible for any unused materials in excess of the quantity they indicated they would need to meet their product commitments. Based upon regular estimates of orders from customers, we usually maintain limited inventories of raw materials. Our principal suppliers usually dedicate portions of their inventories as reserves to meet our production requirements. Nevertheless, on occasion when customer orders have exceeded the supply of raw materials, we have typically been able to obtain extensions from our customers to allow sufficient supply to become available. Such arrangements help us remain cost competitive.

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Equipment

In addition to raw materials, the availability of packaging and testing equipment is critical to our services. We generally seek to maintain equipment from different suppliers with broad functionality and flexibility for different packaging types to enhance capacity utilization. We purchase packaging equipment from major international manufacturers, including Apic Yamada Corporation, Kulicke & Soffa Industries Inc., ASM Technology Singapore PTE LTD. and TOWA Corporation.

Testing equipment is one of the critical components of the wafer probing and device testing process. We generally seek to maintain testers from different suppliers with similar functionality and the ability to test a variety of different semiconductors. In general, certain semiconductors can only be tested on a limited number of specially configured testers. Our major suppliers of testing equipment include Verigy Ltd, which took over the semiconductor testing business of Agilent Technologies, Inc. in June 2006, Advantest Taiwan Inc., and Teradyne Inc.

As of December 31, 2010, we operated 5,260 wire bonders and 266 testers in Taiwan. In addition, our subsidiary, Siliconware Suzhou has 1,052 wire bonders and 56 testers in the PRC. We must order equipment in advance of customer demand to expand our capacity, based on our expectation of future demand for our packaging and testing services.

Competition

We face substantial competition from established packaging and testing service providers, including companies with greater manufacturing, financial and other resources. These companies include Advanced Semiconductor Engineering, Inc. (Taiwan), Amkor Technology Inc. (USA) and STATS ChipPAC Ltd. (Singapore). These companies have also established relationships with many large semiconductor companies that are our current or potential customers. To a lesser extent, we also compete with the internal semiconductor packaging and testing capabilities of many of our customers.

The principal elements of competition in the independent semiconductor packaging and testing market include:

• the breadth of package and test offerings;

• technical competence;

• manufacturing yields;

• manufacturing cycle times;

• customer service; and

• price.

Integrated Device Manufacturers, or IDMs, that use our services continually evaluate our performance against their own in-house testing and assembly capabilities. These IDMs may have access to more advanced technologies and greater financial and other resources than we do. We believe, however, that we can offer greater efficiency and lower costs while maintaining an equivalent or higher level of quality for three reasons:

• we offer a broader and more complex range of services as compared to the IDMs, which tend to focus their resources on improving their front-end operations;

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• we generally have lower unit costs because of our higher utilization rates; and

• we offer a wider range of services in terms of complexity and technology.

Strategic Investments and Dispositions

We enter into equity joint ventures with and make strategic investments and dispositions in companies located in Taiwan and the United States engaged in related semiconductor packaging and testing businesses. We believe that our participation in these companies allows us to enhance and complement our manufacturing services offerings, secure access to raw materials and keep us up to date with technological changes in the semiconductor industry. These participations include:

• On December 1, 2009, one of our investees, Phoenix Precision Technology Corporation, or PPT, merged with Unimicron Technology Corporation, or Unimicron, a supplier of semiconductor raw materials, including substrates. Unimicron was the surviving entity and PPT was dissolved. Each common share of PPT was converted into 0.628 common shares of Unimicron. The common shares of PPT held by us were converted to common shares Unimicron. As of December 31, 2010, we held a 4.94% equity interest in Unimicron.

• ChipMOS Technologies (Bermuda) Ltd., or ChipMOS Bermuda. As of December 31, 2010, we held a 11.01% equity interest in ChipMOS Bermuda, a semiconductor packaging and testing and LCD driver and IC manufacturing company.

• On February 26, 2010, pursuant to a resolution by our board of directors, we entered into an equipment purchase / sales agreement with ChipMOS Technologies Inc., or ChipMOS Taiwan, to sell certain equipment to ChipMOS Taiwan for an aggregate consideration of NT$1,631 million. The aggregate consideration was determined based on the appraisal report issued by China Credit Information Service, Ltd. as well as negotiations between us and ChipMOS Taiwan. Under the terms of the equipment purchase agreement, we commit not to purchase DRAM testers and LCD driver assembly and test equipment for five years from February 26, 2010. The equipment was transferred to ChipMOS Taiwan in four installments, the last one of which was completed in August 2010.

On February 26, 2010, pursuant to a resolution by our board of directors, we entered into a share purchase / sales agreement with ChipMOS Bermuda to purchase 133,000,000 common shares of ChipMOS Taiwan, for an aggregate consideration of NT$1,631 million. ChipMOS Taiwan is a 100% owned subsidiary of ChipMOS Bermuda. The share purchase represents approximately 15.77% of the outstanding shares of ChipMOS Taiwan. The aggregate consideration was determined based on the valuation report provided by Horizon Securities Ltd. as well as negotiations between us and ChipMOS Bermuda.

• In order to enhance our assembly-related techniques, we purchased preferred stock of Vertical Circuits, Inc. (VCI) for US$5 million in December 2010. Our percentage of ownership in VCI is approximately 30.69%.

Intellectual Property

As of December 31, 2010, we held 321 Taiwan patents, 314 U.S. patents and 75 PRC patents related to various semiconductor packaging technologies, including patents for improvements of thermal and electrical performance used in the semiconductor packaging process. As of December 31, 2010, we also had a total of 60 pending patent applications in the United States, 118 in Taiwan and 46 in the PRC. In addition, we had registered “SPIL” as a trademark and as a servicemark in Taiwan.

We have licensed from Freescale, formerly part of Motorola prior to April 2004, the technology for ball grid array packages. This license will expire in December 2015.

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We have also entered into other technology alliances by licensing package technologies, including:

• Wafer Bumping and Redistribution technology, which enables us to form and/or redistribute bumps on the chip to make a silicon die, is able to be directly attached to the substrate using the aforementioned bumps rather than wire bonding. This license does not have an expiration date.

• Wafer Level CSP technology, which enables us to produce a chip scale package at the stage of wafer level. This license does not have an expiration date.

Our ongoing royalty expenses to license intellectual property were immaterial compared to our revenues in any of the years ended December 31, 2008, 2009 and 2010.

We expect to continue to file patent applications where appropriate to protect our proprietary technologies. We may need to enforce our patents or other intellectual property rights or to defend ourselves against claimed infringement of the rights of others through litigation, which could result in substantial cost and diversion of our resources.

The semiconductor industry is characterized by frequent claims regarding patent and other intellectual property rights. If a third party were to bring a valid legal claim against us, we could be required to:

• discontinue the use of disputed process technologies;

• pay substantial damages;

• develop non-infringing technologies; or

• acquire licenses to the technologies that we had allegedly infringed.

Environmental Matters

The principal pollutants produced during semiconductor packaging are waste water and gases from the processes including solder plating, wafer grinding and die sawing. During these processes, waste water is produced when water is used for cooling and rinsing wafers while they are being sawed and ground or for rinsing semiconductor chips when lead-frames are being plated.

In addition, solid waste materials are produced during the packaging process including scraps such as metal lead-frame, printed-circuit-board-like substrate and excess molding resin.

As for the newly developed bumping process, waste water is produced when water is used for rinsing wafers in the processes of etching and solder deposition. Gases come from the emissions of solvents that are used for cleansing wafers during the bumping process.

To mitigate environmental claims, we maintain pollution control facilities in good conditions at all of our factories. We have installed various types of pollution control equipment dedicated to different properties of pollutants for the best treatment of gaseous waste and waste water in our facilities. As part of our pollution control programs, we also subcontract certain waste disposal and recycling work to suppliers who are qualified by the Environmental Protection Administration. Furthermore, we also actively monitor any changes in the international environmental requirements in the electronic and semiconductor industries in order to respond quickly to such changes. We believe that we are in compliance with the applicable environmental requirements of semiconductor industries and regulations in Taiwan in all respects.

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We have consistently followed the environmental practice of reducing pollution from our manufacturing processes and continual performance improvement. Our environmental management meets and complies with R.O.C. and all international environmental requirements. We have implemented an international environmental management system since 1998 and we received the ISO-14001 certification in 1999. By continually improving our environmental performance over the years, we have moved from pollution control in production operations to source management, which focuses on prohibiting or restricting the use of environmentally hazardous substances in materials. We made this change to meet the growing consumer trend for green products. In March 2003, we passed Sony Corporation’s Green Partner qualification with a perfect score. In addition, in 2008 our hazardous substance process management system has received QC080000 certification, which is a new industrial management standard for the production of environmentally friendly products.

We also have taken various energy saving and carbon reduction measures to reduce our green house gas emissions. Since 2005, we have conducted annual green house gas emission inventories. We also have been disclosing through the Carbon Disclosure Project since 2007. In 2010, we completed our green house gas inventory and verification of all factories and dormitories in Taiwan according to the ISO 14064-1 standard.

Insurance

We have insurance policies covering physical damage to buildings, equipment and inventories caused by natural disasters and other perils, and the loss of gross profit caused by the insured perils. We also insure ordinary transit and transportation risks for delivery of our inventories and products.

There is an emergency response team in place capable of responding to situations on a real time basis in order to prevent or minimize the possibility of loss to personnel or our facilities, equipment, machinery and inventories.

We have directors and officers liability insurance in place to cover losses that a director or officer becomes legally obligated to pay on account of a claim made against that director or officer from an alleged or actual wrongful act committed in an executive capacity.

Employees

See “Item 6. Directors, Senior Management and Employees — D. Employees” for certain information relating to our employees.

Capital Expenditures and Divestitures

Our capital expenditures amounted to NT$10,048 million, NT$5,303 million and NT$15,321 million, (US$525.8million) in 2008, 2009 and 2010, respectively. Our initial budget for capital expenditures for 2011 is approximately NT$12,611 million (US$432.8 million), which is mostly funded from our retained earnings. We expect our capital expenditures in 2011 will primarily consist of purchasing equipment, improving our facilities and constructing new plants. We may adjust the amount of our capital expenditures upward or downward based on the progress of our capital projects, market conditions and our anticipation of future business outlook. See “Item 5. Operating and Financial Review and Prospects—B. Liquidity and Capital Resources.”

We have made, and expect to continue to make, capital expenditures in connection with the expansion of our production capacity. The table below sets forth our principal capital expenditures, paid or committed, for the periods indicated.

	Years Ended December 31,
	(in millions)
	2008		2009		2010		2010
	NT$		NT$		NT$		US$
Equipment purchases		8,587		3,561		12,347		423.7
Land and building construction and purchases		1,461		1,742		2,974		102.1

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Litigation

On March 1, 2006, we were informed of a lawsuit, or the California Litigation, brought by Tessera Inc., or Tessera, in the United States District Court for the Northern District of California against us, our subsidiary Siliconware U.S.A., Inc. and five other semiconductor companies and their subsidiaries. Tessera alleged that some of our packaging services infringe patents owned by Tessera and that we breached a license agreement with Tessera. In May 2007, the parties stipulated a stay pending a final determination of an investigation directed against other parties (including certain co-defendants in the California Litigation) conducted by the U.S. International Trade Commission. Pursuant to the stipulation, the court stayed the litigation.

In February 2007, we filed requests for reexamination of five patents with the U.S. Patent and Trademark Office, or the PTO, four of which being asserted by Tessera against us in the California Litigation. The PTO has rejected part of the asserted patent claims on the grounds that each claim is invalid in view of certain prior art and part of the asserted patent claims have been confirmed by the PTO. Tessera has appealed some of these decisions to the Board of Patent Appeals and Interferences.

Because litigation is inherently unpredictable, we are unable to predict the ultimate outcome of any dispute. See “Item 3. Key Information — D. Risk Factors — Risks Relating to Our Technologies — Disputes over intellectual property rights could be costly and could deprive us of technologies to stay competitive.

C. Organizational Structure

The following table sets forth certain information as of December 31, 2010 regarding certain companies in which we consolidated and the principal business of each such entity.

Company	Main Activities	Location	Total Paid-in Capital of Such Entity			Direct/Indirect Equity Interest
			(in millions)
SPIL (B.V.I.) Holding Limited	Investment activities	British Virgin Islands	US$	128.4	(1)		100.00	%
Siliconware U.S.A. Inc.	Communicating and maintaining relationships with companies headquartered in North America	San Jose, CA, USA	US$	1.3	(1)		100.00	%
SPIL (Cayman) Holding Limited	Investment activities	Cayman Islands	US$	130.2	(1)		100.00	%
Siliconware Technology (Suzhou) Limited	Assembly and testing services	Suzhou, Jiangsu, China	US$	130.0	(2)		100.00	%

(1) Aggregate par value of all issued shares.

(2) Contributed capital.

The following table sets forth certain information regarding our investees as of December 31, 2010.

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Company	Main Activities	Location	Total Paid-in Capital of Such Entity			Direct/Indirect Equity Interest
			(in millions)
ChipMOS Technologies (Bermuda) Inc.	Investment activities	Hsinchu, Taiwan	US$	1.1	(1)		11.01	%
Unimicron Technology Corp.	Researching, developing, manufacturing and selling ball grid array substrate	Taoyuan, Taiwan	NT$	15,474	(1)		4.94	%
ChipMOS Technologies Inc.	Assembly and testing services of integrated circuits.	Hsinchu, Taiwan	NT$	8,429	(1)		11.04	%
Hsieh Yong Capital Co., Ltd.	Investment activities	Taipei, Taiwan	NT$	7,631	(1)		7.58	%
Mega Mission Limited Partnership	Investment activities	Cayman Islands	US$	150	(2)		4.00	%
Vertical Circuits, Inc.	Providing advanced packaging technology, products, services and intellectual property	Scotts Valley, CA, USA	US$	0.005	(1)		30.69	%

(1) Aggregate par value of all issued shares.

(2) Contributed capital.

D. Property, Plants and Equipment

We provide services through our Taiwan facilities in Taichung, Hsinchu and Changhua. Our subsidiary Siliconware Suzhou engages in assembly and testing service in the facility located Suzhou, China. In 2009, we completed the expansion of the DF and HS facilities and began construction of plant C in Changhua in December 2009 and expect to complete the construction in April 2011. The following table shows the location, size and wire bonding or testing capacity of each of the facilities and the property on which each facility is located as of December 31, 2010.

Facility(1)	Location of Facility	Size of Facility		Size of Land			Wire Bonding or Testing Capacity
		(square meters)		(square meters)
DF Facility I	Taichung, Taiwan		95,000		29,500		5,260 wire bonders and 266 testers(3)
CS Facility II	Taichung, Taiwan		141,000		47,000
HS Facility III	Hsinchu, Taiwan		95,000		26,500	(2)
CH Facility IV	Changhua, Taiwan		58,000		42,000
SZ Facility V	Suzhou, China		74,000		148,500	(2)	1,052 wire bonders and 56 testers

(1) We own all of our facilities except otherwise noted.

(2) Leased.

(3) Includes wire bonders and testers for DF Facility I, CS Facility II, HS Facility III and CH Facility IV.

Our principal executive offices are located at Facility I in Taichung, Taiwan. Our research and development activities are also located at this facility.

Item 4A. Unresolved Staff Comments

Not applicable.

Item 5. Operating and Financial Review and Prospects

Unless stated otherwise, the discussion and analysis of our financial condition and results of operations in this section apply to our financial information as prepared according to R.O.C. GAAP. You should read the following discussion of our financial condition and results of operations together with the financial statements and the notes to these statements included in this annual report. Our financial statements are prepared according to R.O.C. GAAP, which differ from U.S. GAAP. For a discussion of the material differences, see note 31 to our financial statements included elsewhere in this annual report.

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A. Operating Results

Overview

We are one of the world’s leading independent providers of semiconductor packaging and testing services. We offer a full range of packaging and testing solutions, including advanced substrate packages such as flip-chip ball grid packages, together with lead-frame packages, and testing services for logic, mixed signal and embedded memory devices. We also offer our customers complete turnkey solutions, including packaging, testing and drop shipment service.

We recorded operating income of NT$8,946 million, NT$8,143 million and NT$6,376 million, (US$218.8 million) in 2008, 2009 and 2010 respectively. Decreases in our operating income for 2010 compared to 2008 and 2009 were mainly attributable to a higher cost of goods sold in 2010 due to an increase in cost of raw material. Therefore, our gross margin for 2010 decreased compared to 2008 and 2009.

Intense competition in the semiconductor industry worldwide resulted in decreases in the average selling prices of our manufacturing services. We expect that average selling prices for most of our semiconductor packages to continue to decline in the future. A decline in average selling prices of our semiconductor packages, coupled with high depreciation cost resulting from our purchase of additional equipment during the previous periods, if not offset by reductions in the other cost of producing those packages, would decrease our gross margins.

To counter the effects of decreasing average selling prices, we will continue to attempt to:

• negotiate better pricing terms with our suppliers, including quantity discounts;

• find alternative, less expensive sources of raw materials;

• maximize production efficiency of our equipment; and

• engage in utility conservation programs.

We do not maintain reserves for cancellations or variations in customer orders.

General Factors Affecting Our Results of Operations

A general factor affecting our results of operations is the global economy and conditions in the financial and credit markets. In 2010, the global economy and conditions in the financial and credit markets has moved steadily toward recovery. In addition, new consumer electronics products, such as tablet PCs, smartphones, cloud computing products and the latest processors, have created demand for our services. However, the European debt crisis in the second half of 2010 impeded the momentum of global economy recovery, and we experienced a flat season in place of the traditional peak season for the industry.

In addition, our results of operating were also impacted by the increase in gold prices, the time-consuming process of copper wire bonding, the appreciation of the New Taiwan Dollar, and rising wage levels.

Consolidation

For 2008, we consolidated five subsidiaries: Siliconware Investment Company Ltd., SPIL (B.V.I.) Holding Limited, Siliconware U.S.A. Inc., SPIL (Cayman) Holding Limited and Siliconware Technology (Suzhou) Limited, each in which we own a 100% equity interest. On August 31, 2009, we merged our wholly-owned subsidiary, Siliconware Investment Company Ltd., hence reducing the number of our consolidated subsidiaries to four. Upon adoption of the Order of the Financial Supervisory Commission, Executive Yuan No. 0930154140 in January 2005, we were required to prepare consolidated financial statements pursuant to R.O.C. SFAS No. 7 on a semiannual basis. However, the Commission released the Order No. 0960064020 in November 2007, which requires us to prepare consolidated financial statements on a quarterly basis commencing January 2008.

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Transactions with ChipMOS Taiwan and ChipMOS Bermuda

On February 26, 2010, pursuant to a resolution by our board of directors, we entered into an equipment purchase / sales agreement with ChipMOS Taiwan, to sell certain equipment to ChipMOS Taiwan for an aggregate consideration of NT$1,631 million. The aggregate consideration was determined based on the appraisal report issued by China Credit Information Service, Ltd. as well as negotiations between us and ChipMOS Taiwan. Under the terms of the equipment purchase agreement, we commit not to purchase DRAM testers and LCD driver assembly and test equipment for five years from February 26, 2010. The equipment was transferred to ChipMOS Taiwan in four installments, the last one of which was completed in August 2010. As of December 31, 2010, we received proceeds amounting to NT$1,141 million.

On February 26, 2010, pursuant to a resolution by our board of directors, we entered into a share purchase / sales agreement with ChipMOS Bermuda to purchase 133,000,000 common shares of ChipMOS Taiwan, for an aggregate consideration of NT$1,631 million. ChipMOS Taiwan is a 100% owned subsidiary of ChipMOS Bermuda. The share purchase represents approximately 15.77% of the outstanding shares of ChipMOS Taiwan. The aggregate consideration was determined based on the valuation report provided by Horizon Securities Ltd. as well as negotiations between us and ChipMOS Bermuda. As of December 31, 2010, we have acquired 99,750,000 shares of ChipMOS Taiwan and paid NT$1,141 million according to the agreements.

Change in Mix of Services

Beginning in 2004, our substrate packages accounted for a majority of our net operating revenues in relation to our packaging business. Our lead-frame packages, which had been our major packaging technology since January 1998, still account for a substantial percentage of our net operating revenues.

The following table shows, for the periods indicated, the amount of our packaging by package types and testing revenues (which are more fully described in “Item 4. Information on the Company—B. Business Overview—Our Business”).

	Years Ended December 31,
	2008				2009				2010
	NT$		%		NT$		%		NT$		%
	(in millions, except percentages)
Substrate base packages		31,243		50.1		30,242		51.0		32,816		51.4
Lead-frame base packages		18,473		29.6		18,235		30.8		18,793		29.4
Other packages		4,064		6.5		2,880		4.8		2,531		4.0
Total packaging revenues		53,780		86.2		51,357		86.6		54,140		84.8
Testing and other revenues		8,623		13.8		7,938		13.4		9,717		15.2
Total net operating revenues		62,403		100.0		59,295		100.0		63,857		100.0

Expansion and Utilization Rate

As we continue to expand our capacity in order to meet increasing demand from our customers, the number of our wire bonders and testers increased to 5,176 and 381, respectively, as of December 31, 2008, 5,613 and 401, respectively, as of December 31, 2009 and 6,312 and 322, respectively, as of December 31, 2010.

Our operating results are affected by relatively high fixed costs. As a result, capacity utilization rates can significantly affect margins as the unit cost of packaging and testing services generally decreases as fixed charges, including depreciation expenses on our equipment, are allocated over a larger number of units. Our utilization rates have varied from period to period as we have expanded our production capacity. We have been successful in minimizing the industry-wide fluctuation in capacity utilization rates by deploying flexible packaging equipment for use in the production of different packages and by utilizing our test equipment also for probing purposes. Our ability to maintain or enhance our margins will continue to depend in part on our ability to effectively manage capacity utilization rates. The capacity utilization rates of our facilities were approximately 82%, 95% and 91% in 2008, 2009 and 2010, respectively.

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Applications of Critical Accounting Policies

The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements included elsewhere in this annual report, which have been prepared in accordance with R.O.C. GAAP. R.O.C. GAAP varies in certain significant respects from U.S. GAAP. These differences and their effects on our financial statements are described in note 31 to our audited consolidated financial statements included in this annual report. The preparation of our audited consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets and liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, accounts receivable and allowance for doubtful accounts, inventory reserves, deferred tax asset valuation allowance, employee bonuses, impairment of long-lived assets and equity investments, and goodwill impairment. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates using different assumptions or conditions.

We believe the following critical accounting policies involve significant judgments and estimates used in the preparation of our audited consolidated financial statements.

Revenue Recognition

We principally provide packaging and testing services of ICs, which may be packaging only, test only or turnkey solutions. Revenues are recognized when services have been provided based on transaction terms and when collectibility is reasonably assured. If turnkey services are negotiated in one contract, we recognize revenues based on the quoted prices when all of the revenue recognition criteria are met. The allowance for doubtful accounts is provided based on the estimated allowance to be incurred and is recorded as deduction of accounts receivable.

Accounts Receivable and Allowances for Doubtful Accounts

We record accounts receivable expected to be collected over one year at present value by using predetermined interest rate whereas those expected to be collected within one year are not reported at present value due to the fact that the difference between the maturity value and the fair value discounted by implicit interest rate is immaterial and the frequency of transactions is high. The allowance for doubtful accounts is estimated based on the evaluation of collectibility and aging analysis.

Inventory Reserves

In general, raw materials are purchased based on the customers’ forecasted demand. If our customers change their forecasted requirements and we are unable to cancel our excess raw material orders, we would experience a build up in our raw material inventory. We could either seek to recover the cost of the materials from our customers or utilize the inventory in production. However, we may not be successful in recovering the cost from our customers or in using such excess inventory in production, which we would consider as part of our reserve estimate. Our reserve for excess and obsolete inventory is based on forecasted demand we receive from our customers. When a determination is made that the inventory would not be utilized in production, it is written off and disposed of. Actual demand may differ from our forecast and may result in additional reserve.

Inventories are recorded at cost when acquired under a perpetual inventory system. Cost is determined using the weighted–average method. The allowance for loss on obsolescence and decline in market value is recorded based on inventory aging and obsolescence, when necessary. Prior to January 1, 2009, inventories were stated by category at the lower of aggregate cost or market value and total inventory approach as of the balance sheet date. Effective January 1, 2009, inventories are stated at the lower of cost or net realizable value by item, except where it may be appropriate to group similar or related items. Net realizable value is the estimated selling price in the ordinary course of business less all estimated costs of completion and necessary selling expenses.

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Impairment of Long-Lived Assets

We review long-lived assets for the purpose of determining the amount of impairment quarterly under R.O.C. GAAP. We perform impairment test whenever an event occurs or evidence indicates that the carrying amount of an asset exceeds its recoverable amount. Recoverable amount is measured as the higher of the net selling price or value in use. The net selling price is the amount obtainable from the sale of an asset in an arm’s-length transaction after deducting any direct incremental disposal costs. The value in use is the present value of estimated future cash flows expected to arise in its remained useful life.

An impairment loss recognized in prior years is reversed if such impairment loss caused by a specific external event of an exceptional nature is not expected to recur. However, the restored amount is limited to the amount of impairment loss previously recognized. Impairment loss for goodwill cannot be reversed.

In 2008, 2009 and 2010, we recognized an impairment charge of NT$43 million, NT$74 million and NT$118 million, (US$4.0 million), respectively, for packaging and testing assets to be disposed of to reduce the carrying value of the assets to their estimated fair value less cost of sale. The fair value of the assets to be disposed of was determined by the estimated net realizable value of the assets. We determined the estimated net realizable value of these assets based on the condition and anticipated future cash flows of these assets. The impairment charge was mainly related to our decision to dispose certain machinery and equipment due to technology phase out and replacement in 2008, 2009 and 2010.

Impairment of Equity Investments

We evaluate quarterly our equity investments for impairment due to declines in the fair value that are considered other than temporary under R.O.C. GAAP. Such evaluations include an assessment of general economic and company-specific considerations, such as customer forecasts and regularly updated projections of operating results. In the event of a determination that a decline in fair value is other than temporary, loss is recognized in the current year’s income. The evaluation of whether a decline in fair value is other than temporary requires considerable management judgment. For an investee who resolves to liquidate or dissolve, a one-time write-off would be recorded to the extent that the estimated proceeds would be obtained and the amount of investment balance would not be recovered.

Provision for Income Taxes and Deferred Tax Asset Valuation Allowances

As of December 31, 2010, we had approximately NT$1,661 million (US$57.0 million) of net deferred income tax assets related principally to investment tax credits that expire at various dates through 2014, the unrealized loss on idle assets and loss carryforwards. Valuation allowance was provided to reduce the deferred income tax assets to the amount that we believe is more likely than not to be realized. We have considered future taxable income and ongoing prudent and feasible tax planning strategies in assessing the need for the valuation allowances. In the event we determined that we would be able to realize our deferred income tax assets in the future in excess of our net recorded amount, an adjustment to our deferred income tax assets would increase income in the period such determination was made. Similarly, should we determine that we would not be able to realize all or part of our net deferred income tax assets in the future, an adjustment of our deferred tax assets would be charged to income in the period such determination was made.

Employee Bonuses

Some of our employees are entitled to bonuses in accordance with applicable provisions of our articles of incorporation. Employee bonuses are determined at 10% of distributable retained earnings. Distributable retained earnings are calculated as retained earnings after various reserves are made in accordance with R.O.C. law and our articles of incorporation and after appropriation for remuneration to directors are made. Employee bonuses may be granted in cash, shares or a combination of both. Under R.O.C. GAAP, prior to January 1, 2008, such bonuses are appropriated from retained earnings during the accounting period during which such shareholders’ approval is obtained. If such employee bonuses are settled through the issuance of our shares, the amount charged against retained earnings would be based on the par value of the common shares issued. Effective January 1, 2008, pursuant to R.O.C. EITF 96-052, a company should no longer treat such bonuses as a reduction of retained earnings but record it as an expense and related liability when a company has legal obligations and could reasonably estimate such amount, which is similar to the requirements of U.S. GAAP.

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Under U.S. GAAP, the employee bonus expense is initially accrued at the end of the period when services are rendered, at 10% of the distributable retained earnings. When bonuses are approved by the shareholders in the subsequent year, an additional compensation expense is recorded for the difference between the par value and the fair market value of shares granted to employees.

Goodwill

Goodwill arising from business combination is recognized under U.S. GAAP as the difference between the fair value of shares issued or other consideration and the fair value of net assets acquired. ASC Topic 350, Intangibles – Goodwill and Other, or ASC Topic 350, requires that we perform an impairment review, at the “reporting unit” level, at least annually thereafter. Since we operate on an integrated basis, we have only one reporting unit. Based on the comparison of the fair value and carrying value of our company, we concluded that goodwill was not impaired as of December 31, 2010.

Description of Revenue and Cost Items

Net Operating Revenues

We generate our net operating revenues primarily from semiconductor packaging and testing operations. Net operating revenues from our semiconductor packaging activities consist of our service fees and the cost of raw materials we purchase to provide semiconductor packaging services. We price our packaging services on a per unit basis taking into account the complexity of the services to be provided, the prevailing market conditions, the order size, the strength and history of our relationship with the customer and our capacity utilization.

We charge our testing services based on the specific test and the time, usually measured in seconds, to run a test, taking into account the complexity of the semiconductor device and the customer’s test program.

Net operating revenues are recognized when services are rendered and the collection is realized or realizable. Our customers are generally invoiced at the time when services are rendered, with varying terms of credit between 30 and 90 days from the time of billing.

Cost of Goods Sold

Our cost of goods sold consists principally of:

• cost of raw materials purchased for semiconductor packaging services;

• direct labor costs; and

• overhead including depreciation and maintenance of production equipment, indirect labor costs, indirect material costs, utilities and royalties.

Operating Expenses

Our operating expenses consist of the following:

• Selling, General and Administrative Expenses. Selling, general and administrative expenses consist primarily of salaries and related personnel expenses, other marketing expenses, fees for professional services, and the cost of computers to support our operations.

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• Research and Development Expenses. Research and development expenses consist primarily of salaries, bonuses and related costs for technology development, technology license fees allocated to research and development, and depreciation on and maintenance of equipment and various materials used in our research and development processes. We expect our research and development expenses to grow as we hire additional staff and purchase additional equipment for research and development purposes.

Taxation

The corporate income tax rate has been reduced from 25% to 17% since January 1, 2010. Therefore, the corporate income tax rate in Taiwan, which currently applies to us, is 17%. Based on our status as a company engaged in the semiconductor packaging business in Taiwan, we have been granted exemptions from income taxes in Taiwan because we used the proceeds raised through the offering of American depository receipts and capitalization of earning for the purpose of purchasing equipment. As permitted by Taiwan tax regulation, we can use these exemptions for five years from the date when we begin to generate income from the use of this equipment. As a result, we began to use these exemptions in 2004. These tax exemptions resulted in tax savings of approximately NT$826 million, NT$307 million and NT$120 million (US$4.1 million) in 2008, 2009 and 2010, respectively. We also benefit from other tax incentives generally available to technology companies, including tax credits ranging from 30% to 50% for research and development and employee training expenses and tax credits ranging from 7% to 11% for investment in automation equipment and technology and certain qualifying investments. However, according to theIndustrial Innovation Actissued on May 12, 2010, the deductible rate of investment tax credit for qualifying research and development expenditures was reduced from 30% to 15% starting January 1, 2010. Historically, these tax incentives have resulted in decreases of income tax payable by approximately NT$858 million and NT$863 million and NT$252 million (US$8.6 million) in 2008, 2009 and 2010, respectively. In 2008, 2009 and 2010, our effective income tax rates were 12.50%, 12.50% and 11.30%, respectively.

ASC Topic 740, Income Tax, or ASC Topic 740, requires the recognition of the impact of a tax position in our financial statements if that position is more likely than not of being sustained on audit. Two-step process is required for the evaluation. The first step is to determine whether it is more likely than not that a tax position will be sustained upon examination based on the technical merits of the position. The second step is to determine the amount of benefit to recognize in the financial statements if the more-likely-than-not recognition threshold is met. The tax position is measured at the largest amount of benefit that is greater than 50 percent likely of being realized upon settlement. We adopted the provisions of ASC Topic 740 in January 2007 and performed our evaluation pursuant to the interpretation.

Results of Operations

The following table shows some of our results of operations data as a percentage of our net operating revenues for the periods indicated.

	Years Ended December 31,
	2008			2009			2010
	%			%			%
Net operating revenues		100.0			100.0			100.0
Cost of goods sold		79.3			80.7			84.6
Gross profit		20.7			19.3			15.4
Operating expenses:
Selling expenses		1.5			1.1			0.6
General and administrative expenses		2.7			2.4			2.4
Research and development expenses		2.2			2.1			2.4
Operating expenses		6.4			5.6			5.4
Operating income		14.3			13.7			10.0
Investment income		—			—			—
Net non-operating (loss) income		(3.9	)		3.5			—
Income before income tax		10.4			17.2			10.0
Income tax expense		(0.3	)		(2.4	)		(1.2	)
Net income		10.1			14.8			8.8

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The Year ended December 31, 2010 compared to the Year Ended December 31, 2009

Net operating revenues. Net operating revenues increased by 7.7% from NT$59,295 million in 2009 to NT$63,857 million (US$2,191.4 million) in 2010. Since a substantial portion of our sales are denominated in U.S. dollars, our operating revenues in 2010 were affected by the depreciation in the foreign currency exchange rate of the U.S. dollar against N.T. dollar, which is our reporting currency. However, because of the strong recovery of the global economy, which boosted business spending and consumer confidence, our overall net operating revenues in 2010 increased compared the net operating revenues in 2009.

Substrate base package sales increased by 8.5% from NT$30,242 million in 2009 to NT$32,816 million (US$1,126.1 million) in 2010. The increase in substrate base package sales was due to an increase in demand. In 2010, substrate base package accounted for 51.4% of our net operating revenues, up from 51.0% in 2009.

Lead-frame base package sales increased by 3.1% from NT$18,235 million in 2009 to NT$18,793 million (US$644.9 million) in 2010. The increase in lead-frame base package sales was attributable to the increase in demand. In 2010, lead-frame base package accounted for 29.4% of our net operating revenues, down from 30.8% in 2009.

Gross profit and gross margin. Our gross profit decreased by 14.2% from NT$11,443 million in 2009 to NT$9,816 million (US$336.9 million) in 2010 mainly due to the increase of cost of goods sold. Our gross margin (gross profit as a percentage of net operating revenues) decreased from 19.3% in 2009 to 15.4% in 2010. Our cost of goods sold increased by 12.9% from NT$47,852 in 2009 to NT$54,041 million (US$1,854.5 million) in 2010 primarily because of surging price of gold wire.

Operating expenses. Operating expenses increased by 4.2% from NT$3,300 million in 2009 to NT$3,440 million (US$118.1 million) in 2010. Operating expenses as a percentage of net operating revenues was 5.6% and 5.4% in 2009 and 2010, respectively.

Selling expenses. Selling expenses decreased by NT$230 million between these two years mainly due to reversal of bad debt upon receipt of payment for overdue invoices. The net amount of reversal of bad debt in 2010 was NT$261 million.

General and administrative expenses. General and administrative expenses increased by NT$108 million between these two years mainly due to increase in salary expenses.

Research and development expenses. Research and development expenses increased by NT$262 million between these two years mainly due to increase in salary expenses.

Operating income and operating margin. We recorded an operating income of NT$8,143 million and an operating margin of 13.7% (operating income as a percentage of net operating revenues) in 2009 and generated operating income of NT$6,376 million (US$218.8 million) and operating margin of 10.0% in 2010. The decrease in operating margin was primarily due to increase in our cost of goods sold in 2010.

Net non-operating income. Our net non-operating income decreased from NT$2,070 million in 2009 to NT$14 million (US$0.5 million) in 2010. The decrease in net non-operating income was primarily due to a gain on disposal of investments of NT$1,948 million recognized in 2009.

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Income tax expense. We recognized an income tax expense of NT$1,423 million in 2009 and NT$763 million (US$26.2 million) in 2010 primarily due to the decrease of taxable income and change of corporate income tax rate from 25% to 17%.

Net income. As a result of the factors discussed above, our net income decreased from NT$8,790 million in 2009 to NT$5,627 million (US$193.1 million) in 2010.

The Year ended December 31, 2009 Compared to the Year Ended December 31, 2008

Net operating revenues. Net operating revenues decreased by 5.0% from NT$62,403 million in 2008 to NT$59,295 million in 2009. Our sales revenue decreased by 5.0% in 2009 compared to 2008 because of an overall reduction in demand due to the global economic recession.

Net operating revenues from our packaging business decreased by 4.5% from 2008 to 2009. Such decrease was primarily due to the impact from the global financial crisis, where the tightening of commercial spending and of capital and credit availability and declining consumer confidence has resulted in reduction in demand and a general industry downturn.

Substrate base package sales decreased by 3.2% from NT$31,243 million in 2008 to NT$30,242 million in 2009. The deteriorating worldwide economic conditions lead to an overall decrease in demand, which resulted in decline in revenues for the substrate base packages. In 2009, substrate base package accounted for 51.0% of our net operating revenues, up from 50.1% in 2008.

Lead-frame base package sales decreased by 1.3% from NT$18,473 million in 2008 to NT$18,235 million in 2009. The decrease in lead-frame base package sales was attributable to the decline in demand due to the global financial crisis. In 2009, lead-frame base package accounted for 30.8% of our net operating revenues, up from 29.6% in 2008.

Gross profit and gross margin. Our gross profit decreased by 11.6% from NT$12,949 million in 2008 to NT$11,443 million in 2009 mainly due to the decrease of net operating revenues. Our gross margin (gross profit as a percentage of net operating revenues) decreased from 20.7% in 2008 to 19.3% in 2009. Our cost of goods sold decreased by 3.2% from NT$49,454 million in 2008 to NT$47,852 million in 2009.

Operating expenses. Operating expenses decrease by 17.6% from NT$4,003 million in 2008 to NT$3,300 million in 2009. Operating expenses as a percentage of net operating revenues was 6.4% and 5.6% in 2008 and 2009, respectively.

Selling expenses. Selling expenses decreased by NT$320 million between these two years mainly due to decreases in bad debt, legal fees and commission fees.

General and administrative expenses. General and administrative expenses decreased by NT$276 million between these two years mainly due to decreases in employees’ bonuses, legal fees and salary expenses.

Research and development expenses. Research and development expenses decrease by NT$107 million between these two years mainly due to decreases in new package development expenses.

Operating income and operating margin. We recorded an operating income of NT$8,946 million and an operating margin of 14.3% (operating income as a percentage of net operating revenues) in 2008 and generated operating income of NT$8,143 million and operating margin of 13.7% in 2009. The decrease in operating margin was primarily due to reductions in our operating revenues in 2009.

Net non-operating (loss) income. Our net non-operating (loss) income increased from NT$(2,422) million in 2008 to NT$2,070 million in 2009. The increase in net non-operating income was primarily due to a gain on disposal of investments of NT$1,948 million recognized in 2009 and an impairment loss of NT$3,031 million recognized in 2008.

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Income tax expense. We recognized an income tax expense of NT$211 million in 2008 and NT$1,423 million in 2009 primarily due to expiration of certain five-year income tax exemptions.

Net income. As a result of the factors discussed above, our net income increased from NT$6,314 million in 2008 to NT$8,790 million in 2009.

B. Liquidity and Capital Resources

We need cash primarily for capacity expansion, equipment purchases and working capital. We believe that our working capital is sufficient for our requirements for the next year. Although we have historically been able to satisfy our working capital needs from cash flow from operations, our ability to expand our capacity has been largely dependent upon, and will continue to depend upon, our ability to finance these activities through the issuance of equity securities, long-term borrowings and the issuance of convertible and other debt securities. Our ability to meet our working capital needs from cash flow from operations will be affected by the demand for our manufacturing services, which in turn may be affected by several factors, many of which are outside of our control, such as economic downturns and declines in the average selling prices of our manufacturing services caused by oversupply in the market. To the extent that we do not generate sufficient cash flow from our operations to meet our cash requirements, we may rely on external borrowings and securities offerings. We have not historically relied, and we do not plan to rely in the foreseeable future, on off-balance sheet financing arrangements to finance our operations or expansion.

Liquidity

As of December 31, 2010, our primary source of liquidity was NT$15,519 million (US$532.6 million) of cash and cash equivalents. As of December 31, 2010, we had total availability under existing short-term lines of credit of NT$7,171 million (US$246.1 million) available from seven domestic and foreign financial institutions, of which NT$1,697 million (US$58.2 million) were used as letters of credit, guarantees and short-term borrowings. All of our short-term facilities are revolving facilities with a term of one year, which may be extended for terms of one year each with lender’s consent. We entered into a multi-purpose credit facility led by Mega International Commercial Bank in October 2010 in the amounts of NT$ 5,000 million and US$150 million for capacity expansion and working capital purposes. This facility is a long-term credit facility expiring in October 29, 2015. On November 5, 2010, we drew down NT$4,377 million (US$150.2 million) from this credit facility. As of December 31, 2010, we had short-term and long-term borrowings of NT$1,461 million (US$ 50.1 million) and NT$4,377 million (US$150.2 million), respectively, outstanding under these facilities.

The following table sets forth our cash flows with respect to operating activities, investing activities, financing activities and the effect of exchange rate changes on cash for the periods indicated.

	Years Ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
	(in millions)
Net cash provided by operating activities		21,605			15,492			14,407			494.4
Net cash used in investing activities		(10,555	)		(5,621	)		(16,083	)		(551.9	)
Net cash used in financing activities		(14,927	)		(9,054	)		(2,266	)		(77.8	)
Effect of exchange rate changes on cash		94			(43	)		(154	)		(5.3	)
Net (decrease) increase in cash and cash equivalents		(3,783	)		774			(4,096	)		(140.6	)

Net Cash Provided by Operating Activities

In 2010, net cash provided by operations was NT$14,407 million (US$494.4 million) compared to NT$15,492 million in 2009. The decrease in net cash provided by operating activities was primarily the result of decrease in net income in 2010.

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In 2009, net cash provided by operations was NT$15,492 million compared to NT$21,605 million in 2008. The decrease in net cash provided by operating activities was primarily the result of a significant increase in accounts receivable. Our accounts receivable decreased by NT$3,611 million in 2008 and increased by NT$4,390 million in 2009, mainly due to increase in net operating revenue in the fourth quarter of 2009 compared to the same quarter in 2008.

Net Cash Used in Investing Activities

In 2010, cash used in investing activities was NT$16,083 million (US$551.9 million) compared to NT$5,621 million in 2009. The increase in net cash used in investing activities was primarily the result of increases in capital expenditures for property, plants and equipment in 2010. These capital expenditures were primarily funded with net cash provided by operating and financing activities. We are at times required to prepay our purchases of land and equipment. As of December 31, 2009 and 2010, we did not have any outstanding balance of any prepayments for purchases of land. Prepayments for purchases of equipment result from contractual agreements involving down payments to suppliers when we place an order for the equipment. As of December 31, 2009 and 2010, outstanding balances of prepayments for purchases of equipment amounted to NT$1,182 million and NT$4,127 million (US$141.6 million), respectively. We do not have any written options on non-financial assets.

In 2009, cash used in investing activities was NT$5,621 million compared to NT$10,555 million in 2008. The decrease in net cash used in investing activities was primarily the result of a significant decrease in cash used in the acquisition of property, plant and equipment in the amount of NT$5,303 million in 2009 compared to NT$10,048 million in 2008. As of December 31, 2008 and 2009, we did not have any outstanding balance of any prepayments for purchases of land. Prepayments for purchases of equipment result from contractual agreements involving down payments to suppliers when we place an order for the equipment. As of December 31, 2008 and 2009, outstanding balances of prepayments for purchases of equipment amounted to NT$652 million and NT$1,182 million, respectively.

Net Cash Used in Financing Activities

Net cash used in financing activities was NT$9,054 million and NT$2,266 million (US$77.8 million) in 2009 and 2010, respectively. In 2009, net cash used in financing activities reflected primarily our payment of stockholders’ dividends of NT$5,609 million and our repayment of long-term borrowings of NT$3,000 million. In 2010, net cash used in financing activities reflected primarily our payment of stockholders’ dividends of NT$8,040 million (US$275.9 million) and proceeds from long-term borrowings of NT$4,525 million (US$155.3 million) and increase in short-term borrowings of NT$ 1,249 million (US$42.9 million).

Net cash used in financing activities was NT$14,927 million and NT$9,054 million in 2008 and 2009, respectively. In 2008, net cash used in financing activities reflected primarily our payment of stockholders’ dividends and employees’ bonuses of NT$14,775 million in aggregate. In 2009, net cash used by financing activities reflected primarily our payment of stockholders’ dividends of NT$5,609 million and our repayment of long-term borrowings of NT$3,000 million.

Capital Resources

We have made, and expected to continue to make, substantial capital expenditures in connection with the expansion of our equipment purchases and building improvements in Taichung, Hsinchu, Changhua and Suzhou. See “Item 4. Information on the Company—B. Business Overview—Capital Expenditures and Divestitures.” Our initial budget for capital expenditures for 2011 is approximately NT$12,611 million (US$432.8 million), which is mostly funded from our retained earnings. We expect that our capital expenditures in 2011 will primarily consist of purchasing equipment, improving our facilities and constructing new plants. We may adjust the amount of our capital expenditures upward or downward based on the progress of our capital projects, market conditions and our anticipation of future business outlook. As a result, we may need to invest in new capacity to improve our economies of scale and reduce our production cost, which would require us to raise additional capital. We cannot assure you that we will be able to raise additional capital should it become necessary on terms acceptable to us or at all. We entered into a multiple-purpose credit facility led by Mega Bank in May 2006 in the aggregate principal amount of NT$7,000 million for the purposes of (i) refinancing certain of our long-term indebtedness and (ii) funding our capital expenditure. This facility is a mid-term credit facility expiring in May 2011. On June 26, 2009, we repaid the entire NT$3,000 million we have drawn from this credit facility and consequently this credit facility has been terminated. We entered into a multi-purpose credit facility led by Mega International Commercial Bank in October 2010 in the amounts of NT$ 5,000 million and US$ 150 million for capacity expansion and working capital purposes. This facility is a long-term credit facility expiring on October 29 2015. On November 05, 2010, we drew down NT$4,377 million (US$150.2 million) from this credit facility.

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Transactions with Related Parties

We have not extended any loans or credit to any of our directors, supervisors or executive officers, and we have not provided guarantees for borrowings by any of these persons. We have not entered into any fee-paying contract with any of these persons to provide services not within the capacity of director, supervisor or executive officer of our company.

We have, from time to time, purchased raw materials and sold our manufacturing services to our affiliated companies. We believe that these transactions with related parties have been conducted either on arm’s-length terms or on terms more favorable to us than arm’s-length terms. See “Item 7. Major Shareholders and Related Party Transactions—B. Related Party Transactions.”

Inflation/Deflation

The inflation rate in Taiwan was 3.53% in 2008, -0.87% in 2009 and 0.96% in 2010. We do not believe that inflation in Taiwan has had a material impact on our results of operations.

U.S. GAAP Reconciliation

Our financial statements have been prepared in accordance with R.O.C. GAAP, which differ in certain significant respects from U.S. GAAP. The U.S. GAAP information in note 31 to the consolidated financial statements summarize the principal differences between the amounts determined in accordance with our accounting policy, which is based on R.O.C. GAAP, and determined in accordance with U.S. GAAP together with reconciliation of net income and shareholders’ equity from a R.O.C. GAAP basis to a U.S. GAAP basis. The following table shows a comparison of our net income and stockholders’ equity according to R.O.C. GAAP and U.S. GAAP for the periods indicated.

Reconciliation of Consolidated Net Income

	For the Years Ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
	(in millions)
Net income as reported under R.O.C. GAAP		6,314			8,790			5,627			193.1
U.S. GAAP adjustments:
Compensated absences		(2	)		(15	)		(8	)		(0.3	)
Compensation		(1,582	)		—			—			—
Impairment on long-term investments		(280	)		—			—			—
Defined benefit pension plan-net periodic pension cost		1			1			(1	)		—
Total U.S. GAAP adjustments		(1,863	)		(14	)		(9	)		(0.3	)
Taxation effect		(56	)		(21	)		(21	)		(0.7	)
Net income under U.S. GAAP		4,393			8,755			5,597			192.1

Reconciliation of Consolidated Stockholders’ Equity

The following are the most significant differences between R.O.C. GAAP and U.S. GAAP as they relate to our net income and stockholders’ equity. For other GAAP differences, please refer to note 31 to our consolidated financial statements included elsewhere in this annual report.

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	For the Years Ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
	(in millions)
Total stockholders’ equity as reported under R.O.C. GAAP		59,314			63,081			61,296			2,103.5
U.S. GAAP adjustments:
Compensated absences		(58	)		(73	)		(81	)		(2.8	)
Compensation		—			—			—			—
Defined benefit pension plan		(172	)		(363	)		(386	)		(13.3	)
Acquisition of Siliconware Corporation		4,874			4,874			4,874			167.3
Taxation effect		(40	)		(61	)		(83	)		(2.8	)
Stockholders’ equity under U.S. GAAP		63,917			67,458			65,620			2,251.9

The following are the most significant differences between R.O.C. GAAP and U.S. GAAP as they relate to our net income and stockholders’ equity. For other GAAP differences, please refer to note 31 to our consolidated financial statements included elsewhere in this annual report.

Employee Bonuses

Certain employees of our company are entitled to bonuses in accordance with applicable provisions of our articles of incorporation. Employee bonuses are determined at 10% of distributable retained earnings. Distributable retained earnings are calculated as retained earnings after various reserves in accordance with R.O.C. regulations and our articles of incorporation and after appropriation for remuneration to directors. Employee bonuses may be granted in cash, shares or a combination of both. Before January 1, 2008, under R.O.C. GAAP, such bonuses were appropriated from retained earnings in the accounting period during which such shareholders’ approval is obtained. If such employee bonuses are in the form of our shares, the amount charged against retained earnings is based on the par value of the shares issued. Under U.S. GAAP, any employee bonus expense is initially accrued at the end of the period when services are rendered, at 10% of the distributable retained earnings. When bonuses are approved by the shareholders in the subsequent year, an additional compensation expense is recorded for the difference between the par value and the fair value of shares granted to employees. The difference between U.S. GAAP and R.O.C. GAAP in this area would result in adjustments to net income and shareholders’ equity as shown in the above schedules. In addition to the adjustments to net income and shareholders’ equity as shown in the above schedules, application of U.S. GAAP on employee bonuses would also result in a reclassification from retained earnings to additional paid-in capital.

Effective January 1, 2008, pursuant to R.O.C. EITF 96-052 “Accounting for Employees’ Bonuses and Directors’ and Supervisors’ Remuneration” as prescribed by the Accounting Research and Development Foundation, R.O.C., dated March 16, 2007, we no longer treat employee bonuses as a reduction of retained earnings, but as a cost / expense and related liability when we have legal obligations and could reasonably estimate such amount.

Employee Stock Option

Pursuant to U.S. GAAP, for periods prior to January 1, 2006, we elected to follow Accounting Principles Board Opinion No.25, “Accounting for Stock Issued to Employees” (APB 25) and related interpretations and applied intrinsic value method in accounting for its employee stock options. Effective January 1,2006, we adopted the modified prospective transition method provided by ASC Topic 718, Compensation – Stock Compensation (“ASC Topic 718”) to use the fair value method with forfeitures estimated at the time of grant and revise in subsequent periods if actual forfeitures differ from those estimates. In addition, the exercise price of our stock options is subject to change due to the distribution of stock dividends. We were required to measure the effects of the modification and record incremental compensation cost, if any.

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For computing the fair value of options granted, we used the Black-Scholes option-pricing model with input assumptions of expected volatility, expected life, expected dividend rate and expected risk-free rate of return. We applied the historical volatility based on the historical stock price volatility over the historical time period commensurate with the expected term of the employee stock option. We determined the expected term by using the simplified method in accordance with Staff Accounting Bulletin No.110 as the awards meet the definition of a “plain vanilla award”. The expected term is determined as the mid-point between the vesting period and the contractual term. We estimated dividend yield by historical experience. Besides, we used the yield of Taiwan Government Bond with the contract term equal to the expected term of the share options as our risk-free interest rate pursuant to ASC Topic 718, which required entities based in jurisdictions outside the United States to use the implied yield of zero-coupon government bonds currently available in the market where the shares are primarily traded when estimating the risk-free interest rate.

Defined Benefit Pension Plan

Net periodic pension cost under U.S. GAAP may differ from the one under R.O.C. GAAP due to differences in, but not limited to, service cost, interest cost, expected return on assets and the amortization in net gain (loss). Reconciliation the difference between U.S. GAAP and R.O.C. GAAP is required before reaching U.S. GAAP funding status.

Under R.O.C. GAAP, pension liability is accrued without reflecting the funded status and additional minimum liability is used when the fair value of pension assets is less than the amount of accumulated benefit obligation. Under U.S. GAAP, additional pension liability or asset is accrued pursuant to ASC Topic 715, which requires the recognition of the overfunded or underfunded status of a defined benefit postretirement plan through other comprehensive income, net of tax, at the balance sheet date and eliminates the use of additional minimum liability. Gains and loss, prior service costs, or transition assets and liabilities unrecognized as components of net periodic benefit cost of the period in accordance with ASC Topic 715 are now recognized as a component of other comprehensive income.

10% Tax on Undistributed Earnings and Tax Effect of U.S. GAAP Adjustments

Under R.O.C. GAAP, a 10% tax on undistributed earnings is recognized as a tax expense in the period during which the amount of undistributed earnings is approved by the shareholders. Under U.S. GAAP, the 10% tax on undistributed earnings should be accrued in the period during which the earnings are generated and should be adjusted to the extent that distributions are approved by the shareholders in the following year. Moreover, additional tax benefit (expense) and deferred tax assets or liabilities would be adjusted for the reconciled items resulting in income differences between R.O.C. GAAP and U.S. GAAP.

Goodwill Acquired through Acquisition

The fair value of the net assets we received was used as the value of the consideration for the acquisition of the remaining interests in Siliconware Corp. on December 31, 2000 and reflected in the common stock and capital reserve in our balance sheet. As the consideration is equal to the fair value of the net assets received, no goodwill is recorded under R.O.C. GAAP. Under U.S. GAAP, the acquisition has been accounted for using the purchase method of accounting, and the purchase price was determined using the market value of our shares issued in connection with the acquisition. The difference between the fair value of our shares issued in connection with the acquisition and the fair value of the net assets acquired results in goodwill. Before 2002, goodwill was amortized on a straight-line basis over ten years.

In accordance with ASC Topic 350, Intangible – Goodwill and Other (“ASC Topic 350”), we no longer amortize goodwill since 2002. We perform our annual impairment review in each fiscal year. We have completed our annual goodwill impairment test for fiscal 2008, 2009 and 2010 and concluded that there was no impairment in these three years.

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Impairment of Long-lived Assets

R.O.C. SFAS No. 35 regarding impairment of long-lived assets is effective for financial statements issued for fiscal years ended after December 31, 2005 and the interim periods within such fiscal years. Under both R.O.C. GAAP and U.S. GAAP, we are required to evaluate whether long-lived assets are subject to impairment. Impairment test is performed whenever an event occurs or evidence indicates the carrying amount of an asset may not be recoverable. Under R.O.C. GAAP, a long-lived asset is considered impaired when the anticipated recoverable amount is less than the asset’s carrying value. Recoverable amount is measured as the higher of net selling price or value in use (discounted cash flows). The difference between the recoverable amount and the carrying amount of an asset is recognized as a loss in earnings. Under U.S. GAAP, a long-lived asset is considered impaired when the anticipated undiscounted cash flows are less than the carrying value of the asset. In that event, a loss is recognized based on the amount by which the carrying value exceeds the fair value of the long-lived assets. The estimate of fair value is generally based on quoted market prices from the best available information, including prices for similar assets and the results of using other valuation techniques, or discounted cash flows.

We performed periodical review for our long-lived assets and reclassifies idle assets from assets held for operating use. Idle assets are no longer used for production purposes due to technology phase out and replacement and are disposed as buyers are identified. We recognized impairment losses of NT$43 million, NT$74 million and NT$118 million, (US$4.0 million) on idle assets for the years ended December 31, 2008, 2009 and 2010, respectively. No impairment was identified for other long-lived assets besides idle assets and no reconciliation for impairment loss between R.O.C. GAAP and U.S. GAAP were made for the years ended December 31, 2008, 2009 and 2010.

Stock Dividends

Under R.O.C. GAAP, an issuance of stock dividends is recorded at par with a charge to retained earnings. Under U.S. GAAP, if the ratio of distribution is less than 25% of shares of the same class outstanding, the fair value of the shares issued should be charged to retained earnings. We did not issue any stock dividends in 2010. Hence, reclassification from retained earnings to additional paid-in capital is not needed.

Calculation of EPS

In calculating weighted average number of shares outstanding for EPS purposes under R.O.C. GAAP, employee bonus shares have been treated as outstanding for all periods, in a manner similar to a stock split or dividend and are retroactively adjusted to previous years’ calculation of weighted-average outstanding shares. Under U.S. GAAP, employee bonus shares have been considered separately from the stock dividend or split and have been treated as outstanding from the date when they were issued. The numbers of employee bonus shares issued in 2008, 2009 and 2010 were 47,145,362 shares, nil and nil shares, respectively.

For the purpose of computing the dilutive effect of the employee stock options, the treasury-stock method is used. Treasury shares that may be repurchased with assumed proceeds from the exercise of employee stock options may not be sufficient for the share issued upon exercising options. Therefore, incremental shares are added to the weighted average number of shares outstanding. Under R.O.C. GAAP, the assumed proceeds are the exercise price. Under U.S. GAAP, the assumed proceeds are the sum of (a) the exercise price, (b) the amount of compensation cost attributed to future services and not yet recognized, and (c) the amount of excess tax benefits that will be credited to additional paid-in capital assuming exercise of the options. Therefore, the amount of incremental shares calculated under U.S. GAAP is different from the one calculated under R.O.C. GAAP.

Disposal of investment under equity method for exchange of noncontrolling ownership interest and monetary consideration

Under R.O.C. GAAP, commercial substance, the expectation of a significant change of future cash flows, is evaluated for determining whether gain on investments should be deferred. A gain is recognized only for the portion related to the monetary consideration received. However, under U.S. GAAP, a transaction involved significant monetary consideration is deemed to be a monetary exchange. Therefore, an exchange of investment would be recorded at fair value and no gain on disposal of investment would be deferred.

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Recent Accounting Pronouncements

U.S. GAAP

In June 2009, the FASB issued authoritative guidance on the consolidation of variable interest entities (VIE), which is effective for interim and annual periods beginning after November 15, 2009. The new guidance for VIEs eliminates the quantitative approach previously required for determining the primary beneficiary of a VIE and requires ongoing qualitative reassessments of whether an enterprise is the primary beneficiary. The guidance does not have significant impact on our consolidated financial statements as of and for the year ended December 31, 2010.

In January 2010, the FASB issued amended guidance concerning recurring and nonrecurring fair value measurements. All entities are required new disclosures on the transfers of assets and liabilities between Level 1 and Level 2 in the fair value measurement hierarchy. In addition, it requires a gross presentation of activity within the Level 3, including purchases, sales, issuance, and settlements separately. The amendments are effective for interim and annual periods beginning after December 15, 2009, except for the gross presentation of the Level 3 rollforward, which will become effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. We expect to have additional disclosures upon such adoption.

In order to provide financial statements users with greater transparency about an entity’s financing receivables, the FASB issued amendments in July 2010 to require an entity to provide more disclosures, including the nature of credit risk inherent in financing receivables, how the risk is analyzed and assessed in arriving at the allowance for credit losses and the changes and reasons for changes in the allowance for credit losses. The amendments are effective for interim and annual reporting periods ending on or after December 15, 2010 for public entities. The adoption did not have any material impact on our consolidated financial statements.

In December 2010, the Financial Accounting Standards Board (FASB) issued amended guidance on two-step goodwill impairment test. If there is an entity with reporting units with zero or negative carrying amounts, an entity is still required to perform Step 2 of the goodwill impairment test if it is more likely than not that a goodwill impairment exists by considering whether there are any adverse qualitative factors to indicating such impairment existed. The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2010 for public entities. We do not expect any significant impact on the adoption of this guidance.

R.O.C. GAAP

In April 2009, the R.O.C. Accounting Research and Development Foundation issued R.O.C. SFAS No. 41, “Disclosure for Operating Segments Information”, which provides guidance on the identification of operating segments and required disclosure for operating segments information. This statement is effective for fiscal years beginning on or after January 1, 2011. We do not expect the adoption of this guidance to have any significant impact on our consolidated financial results.

C. Research and Development, Patents and Licenses, etc.

See “Item 4. Information on our Company — B. Business Overview — Research and Development” and “Item 4. Information on our Company — B. Business Overview — Intellectual Property.”

D. Trend Information

Please refer to “— A. Operating Results — Overview” for a discussion of the most significant recent trends in our production, sales and inventory, costs and selling prices since the end of 2010. In addition, please refer to discussions included in this Item for a discussion of known trends, uncertainties, demands, commitments or events that we believe are reasonably likely to have a material effect on our net sales or operating revenues, income from continuing operations, profitability, liquidity or capital resources, or that would cause reported financial information not necessarily to be indicative of future operating results or financial condition.

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E. Off-Balance Sheet Arrangements

As of December 31, 2010, we do not have any off-balance sheet arrangements.

F. Tabular Disclosure of Contractual Obligations

The following table sets forth our contractual obligations and commitments with definitive payment terms which will require significant cash outlays in the future as of December 31, 2010.

	Payments Due by Period
Contractual Obligations(1)	Total		Less Than 1 Year		1-3 Years		4-5 Years		More Than 5 Years
	(in NT$ millions)
Unsecured long-term loans(3)		4,377		—		—		2,918		1,459
Short-term loans		1,461		1,461		—		—		—
Operating leases(2)		171		18		36		30		87
Total contractual cash obligations		6,009		1,479		36		2,948		1,546

(1) Excludes interest payments.

(2) Represents our obligations to make lease payments to use the land on which our facilities are located, primarily in Hsinchu, Taiwan.

(3) The interest expense for long-term loans are calculated based on floating interest rates.

In addition to the contractual obligations mentioned in the above table, other non-current liabilities recorded in our consolidated balance sheet as of December 31, 2010 include NT$348 million (US$ 11.9 million) of pension plan obligations for which the timing and actual amount of funding required have not been determined. We expect to contribute NT$50 million (US$1.7 million) to the pension plan in 2011.

Item 6. Directors, Senior Management and Employees

A. Directors and Senior Management

The following table shows information regarding all of our directors, supervisors and executive officers as of March 31, 2011. The business address of our directors, supervisors and executive officers is the same as our registered address.

Name	Age	Position	Years with Us	Principal Business Activities Performed Outside Our Company
Bough Lin	60	Chairman; Executive Vice President	28	Director of SPIL’s subsidiaries.
Chi-Wen Tsai	64	Vice Chairman; President	28	Director of SPIL’s subsidiaries.
Wen-Lung Lin	59	Director	6	Chairman of Ku-Ming Investment Co.
Yen-Chun Chang	57	Director; Senior Vice President	28	Director of SPIL’s subsidiary.
Wen-Jung Lin	64	Director	20	None
Teresa Wang(1)	55	Director	1	None
Hsiu-Li Liu	56	Independent Director(2)	20	Chairman of So Dar Investment; Director of Chi Cheng Enterprise, Li Fu Investment, More Power Electronics Corp.
Ing Dar Liu	63	Independent Director(2)	6	Director of Chi Mei` Display Corp., AME Inc.; Chairman of Jing-Hong Investment.
Jing-Shan Aur	62	Independent Director(2)	6	Director of RSEA Engineering Corp.

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Name	Age	Position	Years with Us	Principal Business Activities Performed Outside Our Company
Wen-Lung Cheng	63	Supervisor	9	Chairman of Joinwin Investment; Director of SPIL’s subsidiary; Supervisor of Gamania Digital Entertainment Co. Ltd.
Fu-Mei Tang	59	Supervisor	6	None
Mike Ma	52	Vice President	1(3)	None
Chien-Hua Chen	57	Vice President	13	None
Eric Wu	46	Vice President	11	None
C.S Hsiao	53	Vice President	25	None
Yu Hu Liu	54	Vice President	27	None
Kun-Yi Chien	56	Vice President	23	None
John Yu	47	Vice President	20	None
Eva Chen	54	Chief Financial Officer	7	None

(1) Representing Pei-Sheng Cultural Educational Foundation.

(2) Our independent directors’ independency complies with SEC’s and NASDAQ’s independency requirements.

(3) Rounded-up for ease of reference from July 2010.

Bough Lin is our chairman and executive vice president. He has been our director since August 1984. Mr. Lin is also currently a director of our subsidiaries, SPIL (B.V.I.) Holding Ltd. and Siliconware U.S.A., Inc., as our representative. He graduated from National Chiao Tung University in Taiwan in 1973 with a Bachelor’s degree in electronic physics. In addition, Mr. Lin is the brother-in-law of Wen-Lung Cheng, who is one of our supervisors. Mr. Lin is a cousin of Mr. Wen-Jung Lin, our director.

Chi-Wen Tsai is currently our vice chairman and president. He has been our director since August 1984. Mr. Tsai is also a director of our subsidiaries, SPIL (Cayman) Holding Ltd., Siliconware Technology (Suzhou) Ltd. and Siliconware U.S.A., Inc., as our representative. He received a Bachelor’s degree in electrical engineering from National Taipei Institute of Technology in Taiwan in 1969.

Wen-Lung Lin has been our director since June 2005. He graduated from Taichung Commercial College in Taiwan with a Bachelor’s degree. Mr. Lin is currently the chairman of Ku-Ming Investment Co.

Yen-Chun Chang is currently our senior vice president. He has been our director since August 1984. He is also currently a director of our subsidiary, Siliconware Technology (Suzhou) Ltd. as our representative. Mr. Chang graduated from Nan Tai College in Taiwan in 1976 with a Bachelor’s degree in electrical engineering.

Wen-Jung Lin has been our director since June 1991. He received a Bachelor’s degree in architecture from Feng Chia University in Taiwan in 1970. Mr. Lin is a cousin of Mr. Bough Lin, our chairman.

Teresa Wang is currently our Special Assistant of Chairman Office. She has been our director since December 2009. She received a Bachelor’s degree in accounting and statistics from Ming Chuang College in 1978.

Hsiu-Li Liu has been our director since June 1991 and our independent director since 2005. She received a Bachelor’s degree in international trade from Ming Chuang College in Taiwan in 1975. In addition, Ms. Liu has served as the chairman of So Dar Investment Corporation.

Ing-Dar Liu has been our independent director since June 2005. He received a Master’s degree in electronic from National Chiao Tung University in Taiwan. He was the vice chairman of AU Optronics Corp. in 2001.

Jing-Shan Aur has been our independent director since June 2005. He received a Bachelor’s degree in National Taiwan Ocean University. He was previously the chairman of APTOS Corp.

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Wen-Lung Cheng has been our supervisor since June 2002. Mr. Cheng received a Bachelor’s degree in bank and insurance from Tamkang University in Taiwan in 1969. He is the brother-in-law of Mr. Bough Lin, our chairman.

Fu-Mei Tang has been our supervisor since June 2005. Mr. Tang graduated from Kuang-Hwa Technology School in Taiwan. He previously served as our chief audit officer.

Mike Ma has been our vice president in charge of our research and development since April 2011. Mr. Ma received a PhD in materials engineering from North Carolina State University in 1992.

Chien-Hua Chen has been our vice president in charge of Europe Sales/North America Customer Service since 1999. Before joining us, Mr. Chen was the general manager of Ling Sheng Co. Mr. Chen received a Master’s degree in electrical engineering from Arizona State University.

Eric Wu has been our vice president in charge of our Hsin Chu Branch since March 2011. Mr. Wu received a Bachelor’s degree in Electrical Engineering from ChungYuan Christian University in 1989.

C.S Hsiao has been the vice president in our Engineering Center since 2007. Mr. Hsiao received a Bachelor’s degree in chemical engineering from Feng Chia University.

Yu Hu Liu has been the vice president in charge of our Changhua Facility since 2007. Mr. Liu graduated from Lien Ho College with a Bachelor’s degree in electrical engineering.

Kun-Yi Chien is currently the vice president in our Administration Management Center. He received an EMBA from Tunghai University in 2009.

John Yu is currently our vice president in Asia District Marketing and Sales Group. He graduated from National Taiwan Institute of Technology in 1992 with a Bachelor’s degree in industrial engineering and management .

Eva Chen has been our chief financial officer since 2005. Ms. Chen received a Master’s degree in accounting and information technology from National Chung Cheng University in 2007.

B. Compensation of Directors, Supervisors and Executive Officers

The aggregate compensation paid and in-kind benefits granted to our directors, supervisors and executive officers in 2010 was NT$220 million (US$7.5 million). According to our articles of incorporation, remuneration provided to our directors and supervisors shall not exceed 1% of the balance of net income after the payment of income taxes, recovery of past losses and deduction of 10% as legal reserve. The remaining amount may be distributed or reserved in a ratio of 10% and 90% as bonuses to our employees and as dividends to our shareholders, respectively.

C. Board Practices

All of our directors and supervisors were elected on June 13, 2008 for a term of three years. Neither we nor any of our subsidiaries have entered into a contract with any of our directors and supervisors by which our directors or supervisors are expected to receive benefits upon termination of their employment.

Audit Committee

At the date of this filing, we have three independent directors, Jing-Shan Aur, Ing-Dar Liu and Hsiu-Li Liu, to constitute an audit committee. We require our audit committee members to be financially literate with accounting or related financial management expertise in accordance with the Securities Exchange Act of 1934, as amended, or the Exchange Act. Our audit committee charter is in accordance with Rule 10A-3 of the Exchange Act and NASDAQ Listing Rule 5605(b). We have been in compliance with the requirements thereunder since July 27, 2005.

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Differences between NASDAQ Corporate Governance Requirements and Home Country Practices

See “Item 16G.—Corporate Governance.”

D. Employees

As of December 31, 2008, 2009 and 2010, we, together with our subsidiaries, had 15,762, 16,077 and 18,455 full-time employees, respectively. Of these employees, as of December 31, 2010, 16,411 were located in Taiwan, and 1,983 were located in Mainland China, and 61 were located in the United States. Employee salaries are reviewed once or twice a year. Salaries are adjusted based on industry standards, inflation and individual performance. As an incentive, additional bonuses in cash may be paid at the discretion of the management based on the performance of individuals. In addition, R.O.C. law requires that employees be given preemptive rights to subscribe to between 10% and 15% of any of our rights issues or share offerings.

According to R.O.C. Labor Pension Act effective since July 1, 2005, we contribute 6% of our employees’ monthly salaries to the Bureau of Labor Insurance for those employees who choose to participate in the “portable” pension schemes. For our employees who choose to apply for the pension mechanism under the Labor Standards Act, we contribute 2% of their monthly salaries to the Workers’ Retirement Reserve Funds maintained by the Bank of Taiwan.

Our employees participate in our profit distribution under our articles of incorporation. Employees are entitled to receive bonus shares based on a percentage of our allocable surplus income. We paid employees cash bonuses of NT$893 million (US$30.6 million) in 2010.

We do not have any collective bargaining arrangement with our employees, and we have never experienced a work stoppage caused by our employees. We believe we have good relations with our employees. We do not have any labor union.

E. Share Ownership

Each of our directors, supervisors and executive officers holds our shares either directly for their own account or indirectly as the representative of another legal entity on our board of directors. The following table sets forth the share ownership of our directors, supervisors and executive officers as of March 31, 2011, our most recent record date.

Name	Number of Shares Owned		Percentage of Shares Owned
Bough Lin		68,674,075		2.20	%
Chi-Wen Tsai		43,175,555		1.39	%
Wen-Lung Lin		20,754,751		*
Yen-Chun Chang		12,256,417		*
Wen-Jung Lin		5,391,914		*
Teresa Wang(1)		11,251,831		*
Hsiu-Li Liu		12,251,189		*
Ing-Dar Liu		311,000		*
Jing-Shan Aur		146,292		*
Wen-Lung Cheng		10,133,937		*
Fu-Mei Tang		9,025,917		*
C.Y. Lin(2)		239,819		*
Kuo-Jui Tai(3)		248,304		*
Chien-An Chen(4)		473,833		*
Chien-Hua Chen		24,668		*
Michael Chang		206,560		*
C.S Hsiao		135,408		*
Yu Hu Liu		7,438,972		*
Kun-Yi Chien		360,029		*
John Yu		165,894		*

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Name	Number of Shares Owned		Percentage of Shares Owned
Eva Chen		490,164		*
Johnson Tien(5)		373,089		*
Bell Chang(6)		262,600		*

* Less than 1%.

(1) Representing Pei-Sheng Cultural Educational Foundation.

(2) C.Y. Lin has resigned and been re-employed as a consultant since March 2011.

(3) Kuo-Jui Tai has resigned since October 2010.

(4) Chien-An Chen has been retired since April 2011.

(5) Johnson Tien has been retired since February 2010.

(6) Bell Chang has resigned since March 2010.

Item 7. Major Shareholders and Related Party Transactions

A. Major Shareholders

The following table presents information known to us concerning the record ownership of our shares as July 30, 2008, July 19, 2009 and July 18, 2010 (our most recent record date) (i) the ten largest shareholders of our company as of such record date and (ii) all directors, supervisors and executive officers as a group.

	July 30, 2008					July 19, 2009					July 18, 2010(1)
Name of beneficial owner	Number of Shares Owned		Percentage of Shares Owned			Number of Shares Owned		Percentage of Shares Owned			Number of Shares Owned		Percentage of Shares Owned
Citibank(2)(3)		517,969,290		16.43	%		624,143,605		19.80	%		624,143,605		20.03	%
JPMorgan in Custody for Capital World Growth and Income Fund Inc.		151,319,210		4.80	%		78,206,000		2.48	%		139,165,000		4.47	%
Bough Lin		66,494,075		2.11	%		66,494,075		2.11	%		65,294,075		2.10	%
Nan Shan Life Insurance Company Ltd		64,847,374		2.06	%		56,324,354		1.79	%		64,648,354		2.07	%
Ku-Ming Investment Company Ltd(4)		56,102,878		1.78	%		56,102,878		1.78	%		56,102,878		1.80	%
Chunghwa Post Co., Ltd		44,524,157		1.41	%		43,252,067		1.37	%		54,688,067		1.75	%
Shin Kong Life Insurance Company Ltd		2,000,000		0.07	%		6,888,000		0.22	%		43,976,000		1.41	%
Chi-Wen Tsai		38,787,679		1.26	%		40,175,555		1.27	%		40,175,555		1.29	%
JPMorgan in Custody for Capital Income Builder Inc		93,455,300		2.96	%		68,555,300		2.17	%		40,070,300		1.29	%

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	July 30, 2008						July 19, 2009						July 18, 2010(1)
Name of beneficial owner	Number of Shares Owned			Percentage of Shares Owned			Number of Shares Owned			Percentage of Shares Owned			Number of Shares Owned			Percentage of Shares Owned
JPMorgan Chase Bank N.A. Taipei Branch in custody for Schroder International Selection Fund Emerging Asia		17,640,000			0.57	%		*			*			35,003,000			1.12	%
Directors and Supervisors as a group		22,048,061	(6)		6.99	%(6)		183,841,878	(7)		5.90	%(7)		193,372,878	(5)		6.21	%(5)

* Was not one of the ten largest shareholders of our company as of the applicable record date.

(1) Our most recent record date.

(2) As record owner of our ADSs.

(3) As of December 31, 2010 and based on the Schedule 13G filed by Blackrock, Inc. on February 8 and 11 , 2011, Blackrock Inc. and Capital Research Global Investors beneficially owned 219,830,279 and 184,235,300 common shares in the form of ADSs individually, which represented 6.89% and 5.9% of our outstanding share capital as of December 31, 2010. The address of Blackrock Inc. is 40 East 52nd Street, New York, NY 10022 and Capital Research Global Investors is 333 South Hope Street Los Angeles, CA 90071.

(4) Wen-Lung Lin is the chairman of Ku-Ming Investment Company Ltd.

(5) As of March 31, 2011.

(6) As of March 31, 2009.

(7) As of March 31, 2010.

Except for holders of our ADSs, none of our major shareholders have different voting rights from those of other shareholders.

As of March 31, 2011, a total of 124,827,695 ADSs and 3,116,361,139 of our shares (including the shares represented by these ADSs) were outstanding. With certain limited exceptions, holders of common shares that are not R.O.C. persons are required to hold these commons shares through a brokerage or custodial account in the R.O.C. As of March 31, 2011, 624,138,605 common shares were registered in the name of a nominee of Citibank, N.A., the depositary of our ADS facility. Citibank, N.A. has advised us that, as of March 31, 2011, 624,138,605 common shares were held of record by Cede & Co. We have no further information as to common shares held, or beneficially owned, by U.S. persons.

None of our major shareholders have different voting rights from those of other shareholders.

B. Related Party Transactions

Related Party Transactions Policies

We from time to time have engaged in a variety of transactions with our affiliates. We conduct transactions with our affiliates on terms substantially as favorable to us as would be obtainable at the time in a comparable arm’s-length transaction with non-affiliates.

Phoenix Precision Technology Corporation

We purchased semiconductor raw materials from Phoenix Precision Technology Corporation, or Phoenix Precision, totaling NT$2,544 million, NT$2,093 million and NT$2,085 million in 2007, 2008 and 2009, respectively. The average payment period is approximately 90 days from the date of completion of service or purchase. As of December 31, 2007 and 2008, we owed NT$663 million and NT$436 million, respectively, in accounts payable, to Phoenix Precision Technology.

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The purchase price and payment terms for such purchases were generally comparable to those provided by non-related parties. We have followed our standard procurement policy (which is described in greater details below) in selecting our vendors, and we have evaluated the Phoenix Precision transactions from the perspective of overall compliance with those factors. We have concluded that the transactions entered into with Phoenix Precision were comparable with (and not worse than) those provided by non-related parties because the general pricing and product quality-related information regarding non-related parties’ products are generally available in the market. According to our standard procurement policy, we consider the following factors when evaluating and selecting vendors: (i) quality, (ii) cost, (iii) delivery time, (iv) customer service, and (v) technological capability to deliver products pursuant to our specifications. We chose Phoenix Precision not only because Phoenix Precision was generally competitive from the perspectives of those factors, but also because Phoenix Precision has consistently and reliably delivered individually-tailored products to us in the past, and the pricing offered by Phoenix Precision was generally competitive.

On December 1, 2009, Phoenix Precision was merged by Unimicron Technology Corporation. Following this merger, our 16.80% share in Phoenix Precision was transformed into a 4.94% share in Unimicron Technology. Under the definition of the related party, Unimicron Technology is not defined as a related party of our company.

Vertical Circuits, Inc.

In recent years, we have been licensing packaging technologies from Vertical Circuits, Inc. (VCI). In order to enhance assembly-related techniques, we purchased preferred stocks of Vertical Circuits, Inc. (VCI) for US$5 million in December 2010. Our percentage of voting right in VCI is approximately 30.69%. Therefore, VCI became a related party of our company.

C. Interests of Experts and Counsel

Not applicable.

Item 8. Financial Information

A. Consolidated Statements and Other Financial Information

Please refer to Item 18 for a list of all financial statements filed as part of this annual report on Form 20-F.

Litigation

See “Item 4. Information on the Company—B. Business Overview—Litigation.”

Dividend Policy and Distributions

As for our policy on dividend distributions, see “Item 10. Additional Information — Memorandum and Articles of Association — Dividends and Distributions.” The following table sets forth the stock dividends per Share and total number of Shares Issued as Stock Dividend adopted by the annual shareholders’ meeting and Shares outstanding at the end of each such year, except as otherwise noted.

	Cash Dividend per share		Stock Dividend per share(1)		Total Number of Shares Issued as Stock Dividend(2)		Outstanding Shares at Year End
	(NT$)		(NT$)
1995		0		4.00		70,048,800		280,668,000
1996		0		6.00		168,400,800		457,800,000
1997		0		4.00		183,120,000		654,200,000
1998		0		3.60		235,512,000		904,162,000
1999		0		2.30		207,957,260		1,127,092,402
2000		0		1.40		157,793,537		1,449,882,870
2001		0		1.45		235,421,212		1,852,761,683

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	Cash Dividend per share		Stock Dividend per share(1)		Total Number of Shares Issued as Stock Dividend(2)		Outstanding Shares at Year End
	(NT$)		(NT$)
2002(3)		0		0		—		1,853,668,683
2003(4)		0		0		—		1,876,625,683
2004		0.35		1.00		189,447,578		2,105,073,060
2005		0.75		0.80		168,889,805		2,328,919,337
2006		1.73		1.00		241,014,905		2,887,757,426
2007		3.40		0.20		58,672,538		3,073,424,534
2008		4.50		0.10		30,746,975		3,152,589,871
2009		1.80		0		0		3,116,361,139
2010		2.58		0		0		3,116,361,139

(1) Our stock dividend is declared in NT dollar amount per Share. The number of Shares received by a shareholder equals to the NT dollar amount per share of dividend declared multiplied by the number of Shares owned by the shareholder and divided by the par value of NT$10 per Share.

(2) Total number of Shares issued as stock dividends include Shares issued from retained earnings and from capital reserve.

(3) We did not declare a dividend in 2002 because we incurred a net loss in 2001.

(4) We did not declare a dividend in 2003 because our shareholders did not resolve to declare such dividend, even though we generated net income in 2002.

B. Significant Changes

Our net operating revenues on a consolidated basis for the three months ended March 31, 2011 amounted to NT$14,467 million. Our net operating revenues for the first three months of 2011 are not indicative of our financial performance on either an unconsolidated or a consolidated basis for the remaining months of 2011. In addition, we cannot predict whether the demand for our services will continue to improve in the near future.

Item 9. The Offer and Listing

A. Offer and Listing Details

Market Price Information for Our Shares

Our shares have been listed on the Taiwan Stock Exchange since April 7, 1993. The table below shows, for the periods indicated, the high and low closing prices and the average daily volume of trading activity on the Taiwan Stock Exchange for our shares and the highest and lowest of the daily closing values of the Taiwan Stock Exchange Index.

	Closing Price for Each Share(1)				Average Daily		Taiwan Stock Exchange Index
Period	High		Low		Trading Volume		High		Low
	NT$		NT$		(in thousands of shares)
2006		52.50		33.70		18,554		7,823.72		6,257.80
2007		71.70		47.90		12,423		9,809.88		7,344.56
2008		58.10		22.95		17,490		9,295.20		4,089.93
2009		48.90		25.90		28,392		8,188.11		4,242.61
First Quarter		37.45		25.90		18,230		5,390.70		4,259.98
Second Quarter		46.00		36.00		25,674		6,954.10		5,314.45
Third Quarter		46.50		38.55		27,411		7,526.55		6,530.82
Fourth Quarter		48.90		40.25		36,038		8,188.11		7,322.93
2010		46.65		28.85		34,367		8,972.50		7,071.67
First Quarter		46.65		37.25		25,350		8,356.89		7,212.87
Second Quarter		41.95		33.80		32,722		8,171.94		7,071.67
Third Quarter		37.80		28.85		35,612		8,240.89		7,254.06
Fourth Quarter		36.35		31.20		42,498		8,972.50		8,046.23
November		34.00		31.20		35,031		8,450.63		8,240.65
December		36.35		32.20		50,001		8,972.50		8,520.11

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	Closing Price for Each Share(1)				Average Daily		Taiwan Stock Exchange Index
Period	High		Low		Trading Volume		High		Low
	NT$		NT$		(in thousands of shares)
2011 (through April 22, 2011)		41.25		32.90		27,318		9,145.35		8,234.78
First Quarter		41.25		32.90		27,601		9,145.35		8,234.78
January		41.15		32.90		34,010		9,145.35		8,782.72
February		41.00		37.05		19,165		9,111.46		8,528.94
March		41.25		34.95		27,163		8,784.40		8,234.78
April (through April 22, 2011)		37.50		33.40		26,164		8,969.43		8,638.55

Sources: Taiwan Stock Exchange Statistical Data 1999-2011, Taiwan Stock Exchange and Bloomberg.

(1) As reported.

There is no public market outside Taiwan for our shares. The Taiwan Stock Exchange has experienced significant fluctuations in the prices of listed securities and there are currently limits on the range of daily price movements.

Market Price Information for Our American Depositary Shares

Our ADSs have been listed on the NASDAQ Stock Market’s National Market since June 7, 2000. The table below shows, for the periods indicated, the high and low closing prices and the average daily volume of trading activity on the NASDAQ Stock Market’s National Market.

	Closing Price for Each ADS(1)				Average Daily Trading Volume
Period	High		Low
	US$		US$		(in thousands of shares)
2006		7.94		4.74		1,786,700
2007		12.54		7.45		1,877,492
2008		9.55		3.24		2,506,994
2009		8.11		3.85		2,241,612
First Quarter		6.40		3.85		2,147,803
Second Quarter		8.11		5.87		2,345,231
Third Quarter		7.36		6.17		2,199,202
Fourth Quarter		7.83		6.38		2,258,291
2010		5.86		4.46		1,945,648
First Quarter		7.64		5.84		2,822,802
Second Quarter		6.78		5.27		1,887,729
Third Quarter		5.86		4.46		1,585,380
Fourth Quarter		6.06		5.04		1,526,894
November		5.60		5.04		1,755,281
December		6.06		5.30		1,270,100
2011 (through April 21, 2011)		7.15		5.68		2,277,797
First Quarter		7.15		5.68		2,361,976
January		7.15		5.68		2,623,155
February		7.14		6.55		2,173,442
March		6.98		5.99		2,290,609
April (through April 21, 2011)		6.47		5.79		1,929,860

Source: NASDAQ Stock Exchange.

(1) As reported.

B. Plan of Distribution

Not applicable.

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C. Markets

Our shares are listed on the Taiwan Stock Exchange and our ADSs are quoted on the NASDAQ National Market.

D. Selling Shareholders

Not applicable.

E. Dilution

Not applicable.

F. Expenses of the Issue

Not applicable.

Item 10. Additional Information

A. Share Capital

Not applicable.

B. Memorandum and Articles of Association

The following statements summarize the material elements of our capital structure and the more important rights and privileges of our shareholders conferred by Taiwan law and our articles of incorporation.

Objects and Purpose

The scope of business of our company as set forth in Article 2 of our articles of incorporation includes:

(a) The production, processing and purchase and sale of products, including IC, transistors, light emitting diode digital displays, light emitting diode display lamps, liquid crystal clock cores, photo diodes, hybrid circuits, thin film circuits and thick film circuits; and

(b) The import and export of the products mentioned in the preceding paragraph.

Directors

The R.O.C. Company Act and our articles of incorporation provide that our board of directors is elected by shareholders and is responsible for the management of our services. Our board of directors is composed of nine directors. The Chairman of our board is elected by our directors. The Chairman presides at all meetings of our board of directors and also has the authority to represent us. The term of office for our directors is three years and our directors are elected by our shareholders by means of cumulative voting. The last election for all of the directors and supervisors was held in June 2008. In addition, our shareholders also elect three supervisors whose duties include investigating our services and financial condition, inspecting corporate records, calling shareholders’ meetings when our board of directors does not or cannot convene a shareholders’ meeting or when such a meeting is necessary for our benefit, representing us in negotiations with our directors and notifying our board of directors to cease acting in contravention of law, our articles of incorporation or the resolutions of our shareholders’ meetings. The supervisors cannot concurrently serve as our directors or officers. A person may serve as our director or supervisor in his personal capacity or as the representative of one of our shareholder entities. A director or supervisor who serves as the representative of a legal entity may be removed or replaced at any time, and the replacement director or supervisor may serve the remainder of the term of office of the replaced director or supervisor. Our audit committee consists of three independent auditors, including Jing-Shan Aur, Ing-Dar Liu and Hsiu-Li Liu. In order to facilitate the function of our board of directors, our audit committee and board of directors have established procedures for the complaints pursuant to Rule 10A-3(b)(3) under the Exchange Act and have established a means for communicating with the non-management members of our board of directors.

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According to the R.O.C. Company Act, a director who has a personal interest in a matter to be discussed at the meeting of the board of directors, the outcome of which may impair the company’s interests, shall abstain from voting on such matter. Our articles of incorporation also provide that the traveling expenses for all directors and supervisors shall be determined at the board of directors’ meeting based on common practice regardless of the profit or loss to our company. In addition, according to our articles of incorporation, we should distribute no more than 1% of the balance of our earnings after deduction of payment of all taxes and dues, deduction of any past losses and allocation of 10% of our net income as a legal reserve as remuneration to directors and supervisors. Our articles of incorporation do not impose a mandatory retirement age limit for our directors. Furthermore, our articles of incorporation do not impose a shareholding qualification for each director; however, our articles of incorporation require that our directors and supervisors hold our issued shares at the ratios as required by the regulatory authority.

Shares

As of March 31, 2011, our authorized share capital was NT$36.0 billion, divided into 3.6 billion shares, of which NT$31.16 billion, divided into 3.12 billion shares, were issued and outstanding. As of March 31, 2011, no option rights remained outstanding. Other than our shares and ADSs, we do not have any other equity interests outstanding, including any preferential subscription rights, exchangeable debt securities or warrants as of March 31, 2011. All shares presently issued are fully paid and in registered form, and existing shareholders are not obligated to contribute additional capital. The shares underlying the ADSs are fully paid, in registered form and will not be obligated by any capital calls. We generally are not permitted to directly acquire our shares, except under limited circumstances as permitted by R.O.C. law.

New Shares and Preemptive Rights

New shares may only be issued with the prior approval of our board of directors. If our issuance of any new shares will result in any change in our authorized share capital, we are required under R.O.C. law to amend our articles of incorporation and obtain approval of our shareholders in a shareholders’ meeting. We must also obtain the approval of, or submit a registration with, the R.O.C. SFB and the Ministry of Economic Affairs. According to the R.O.C. Company Act, when a company issues capital stock for cash, 10% to 15% of the issue must be offered to its employees. In addition, if a listed company intends to offer new shares for cash, at least 10% of the issue must also be offered to the public pursuant to the Securities and Exchange Law. This percentage can be increased by a resolution passed at a shareholders’ meeting, which will reduce the number of new shares in which existing shareholders may have preemptive rights. Unless the percentage of the shares offered to the public is increased by a resolution, existing shareholders of the company have a preemptive right to acquire the remaining 75% to 80% of the issue in proportion to their existing shareholdings.

Shareholders

We only recognize persons registered in our register as our shareholders. We may set a record date and close our register of shareholders for specified periods to determine which shareholders are entitled to various rights pertaining to our shares.

Transfer of Shares

Under the R.O.C. Company Act, a public company, such as us, may issue individual share certificates, one master certificate or scripless shares to evidence common shares. Shares in registered form are transferred by endorsement and delivery of the related share certificates. Transferees must have their names and addresses registered on our register in order to assert shareholders’ rights against us. Our shareholders are required to file their respective specimen seals with our share registrar, Chinatrust Commercial Bank.

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Shareholders’ Meetings

We are required to hold an annual ordinary shareholders’ meeting once every fiscal year and within six months after the end of each fiscal year. Our board of directors may convene an extraordinary meeting whenever the directors think fit, and they must do so if requested in writing by shareholders holding not less than 3% of our paid-in share capital who have held these shares for more than a year. In addition, any of our supervisors may convene a shareholders’ meeting when our board of directors do not or cannot convene a shareholders’ meeting and/or when such a meeting is necessary for our benefit. At least 15 days advance written notice must be given of every extraordinary shareholders’ meeting and at least 30 days advance written notice must be given of every annual ordinary shareholders’ meeting. Unless otherwise required by law or by our articles of incorporation, voting for an ordinary resolution requires an affirmative vote of a simple majority of those present. A distribution of cash dividends would be an example of an ordinary resolution. The R.O.C. Company Act also provides that in order to approve certain major corporate actions, including but not limited to any amendment of our articles of incorporation, dissolution, merger or spin-off, the transfer of the whole or major part of the business or assets, removing directors or the distribution of any stock dividend, a special resolution may be adopted by the holders of at least two-thirds of our shares represented at a meeting of shareholders at which holders of at least a majority of our issued and outstanding shares are present. However, if we are the controlling company and hold not less than 90% of our subordinate company’s outstanding shares, our merger with the subordinate company can be approved by a board resolution adopted by majority consent at a meeting with two-thirds of our directors present without shareholders’ approval.

Voting Rights

Except for treasury shares, each share is generally entitled to one vote. Except as otherwise provided for by law or by our articles of incorporation, a resolution can be adopted by the holders of a simple majority of the total issued and outstanding shares represented at a shareholders’ meeting. The quorum for a shareholders’ meeting to discuss the ordinary resolutions is a majority of the total issued and outstanding shares. The election of directors and supervisors by our shareholders may be conducted by means of cumulative voting or other voting mechanisms adopted in our articles of incorporation. In all other matters, a shareholder must cast all his votes in the same manner when voting on any of these matters.

Our shareholders may be represented at an ordinary or extraordinary shareholders’ meeting by proxy if a valid proxy form is delivered to us five days before the commencement of the ordinary or extraordinary shareholders’ meeting. Voting rights attached to our shares exercised by our shareholders’ proxy are subject to the proxy regulation promulgated by the R.O.C. SFB.

Any shareholder who has a personal interest in a matter to be discussed at our shareholders’ meeting, the outcome of which may impair our interests, shall not vote or exercise voting rights on behalf of another shareholder on such matter.

Any holder of our ADSs generally will not be able to exercise voting rights on the shares underlying its holding of ADSs on an individual basis.

Dividends and Distributions

We may distribute dividends in any year in which we have current or retained earnings (excluding reserves). Before distributing a dividend to shareholders, we must recover any past losses, pay all outstanding taxes and set aside a legal reserve equivalent to 10% of our net income until our legal reserve equals our paid-in capital.

At the shareholders’ annual ordinary meeting, our board of directors submits to the shareholders for their approval proposals for the distribution of a dividend or the making of any other distribution to shareholders from our net retained earnings or reserves. Dividends are paid to shareholders proportionately. Dividends may be distributed either in cash or in shares or a combination of cash and shares, as determined by the shareholders at such meeting. Distribution of stock dividends requires approvals from the R.O.C. SFB and the Ministry of Economic Affairs, as necessary.

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Our articles of incorporation provide that our earnings after payment of all income taxes and deduction of any past losses shall be distributed as follows:

• allocation of 10% of our net income as legal reserve; and

• payment of no more than 1% of the balance after deducting the 10% legal reserve as remuneration to our directors and supervisors. The remaining amount may be distributed or reserved in a ratio of 10% and 90%, respectively, to our employees as their bonuses and to our shareholders as their dividends.

For dividend distributions, the surplus dividend policy will be adopted based on the future operational planning, business development, capital expenditure budget and requirement of capital fund.

Distribution of dividends may be made by cash dividends or by stock dividends, provided that the percentage of cash dividends shall exceed 50% of total distributed dividends, and the plan of distribution shall be proposed by the Board of Directors and shall be implemented after the distribution plan is approved by our shareholders’ meetings.

In addition to permitting dividends to be paid out of net income, we are permitted under the R.O.C. Company Act to make distributions to our shareholders of additional shares by capitalizing reserves, including the legal reserve and capital surplus of premiums from issuing stock and earnings from gifts received if we do not have losses. However, the capitalized portion payable out of our legal reserve is limited to 50% of the total accumulated legal reserve and is payable only if and to the extent the accumulated legal reserve exceeds 50% of our paid-in capital.

Acquisition of Our Shares by Us

An R.O.C. company may not acquire its own common shares except under certain exceptions provided in the R.O.C. Company Act or the R.O.C. Securities and Exchange Law.

Under the Securities and Exchange Law, we may, by a board resolution adopted by majority consent at a meeting with two-thirds of our directors present, purchase up to 10% of our issued shares on the Taiwan Stock Exchange or by a tender offer, in accordance with the procedures prescribed by the R.O.C. SFB, for the following purposes:

• to transfer shares to our employees;

• to transfer upon conversion of bonds with warrants, preferred shares with warrants, convertible bonds, convertible preferred shares or certificates of warrants issued by us; and

• if necessary, to maintain our credit and our shareholders’ interests; provided that the shares so purchased shall be cancelled thereafter.

In addition, we may not spend more than the aggregate amount of the retained earnings, the premium from issuing stock and the realized portion of the capital reserve to purchase our shares.

We may not pledge or hypothecate any purchased shares. In addition, we may not exercise any shareholders’ rights attaching to such shares. In the event that we purchase our shares on the Taiwan Stock Exchange, our affiliates, directors, supervisors, managers and their respective spouses and minor children and/or nominees are prohibited from selling any of our shares during the period in which we purchase our shares.

Liquidation Rights

In the event of our liquidation, the assets remaining after payment of all debts, liquidation expenses, taxes and distributions to holders of preferred shares, if any, will be distributed pro rata to our shareholders in accordance with the R.O.C. Company Act.

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Other Rights of Shareholders

Under the R.O.C. Company Act, dissenting shareholders are entitled to appraisal rights in the event of a spin-off or a merger and various other major corporate actions. Dissenting shareholders may request us to redeem all their shares at a fair price to be determined by mutual agreement. If no agreement can be reached, the valuation will be determined by a court. Subject to applicable law, dissenting shareholders may, among other things, exercise their appraisal rights by notifying us before the related shareholders’ meeting and /or by raising and registering their dissent at the shareholders’ meeting.

One or more shareholders who have held more than 3% of the issued and outstanding shares for more than one year may require our board of directors to call an extraordinary shareholders’ meeting by sending a written request to our board of directors.

In addition, the R.O.C. Company Act allows shareholders holding 1% or more of the total issued shares of a company to submit, during the period of ten days or more prescribed by the company, one proposal in writing containing no more than three hundred Chinese characters for discussion at the annual ordinary shareholders’ meeting.

Voting of Deposited Securities

A holder may direct the exercise of voting rights regarding the shares represented by the ADSs only pursuant to the deposit agreement as described below and applicable R.O.C. law. See “Risk factors—Holders of our ADSs will not have the same voting rights as the holders of our shares, which may affect the value of your investment.”

Except as described below, a holder will not be able to exercise voting rights attaching to the shares on an individual basis. According to the R.O.C. Company Act, a shareholder’s voting rights must, as to all matters brought to a vote of shareholders, other than the election of directors and/or supervisors, be exercised as to all shares held by the shareholder in the same manner. Accordingly, the voting rights of the shares represented by ADSs must be exercised collectively in the same manner, except in the case of an election of directors and/or supervisors, which may be conducted by means of cumulative voting or other mechanisms adopted in our articles of incorporation. Pursuant to R.O.C. Company Act and our articles of incorporation, the election of directors and/or supervisors is by means of cumulative voting.

By accepting and continuing to hold ADSs or any interest therein, a holder will authorize and direct the depositary to appoint our chairman or the chairman’s designee as his representative to exercise the voting rights attaching to the shares underlying the ADSs.

Once notified of a shareholders’ meeting, the depositary will, subject to the terms of the deposit agreement, fix a record date for determining the owners entitled to receive information about this meeting. The depositary will mail to the owners:

• the notice of the meeting sent by us; and

• a statement that the owners will be entitled to instruct the depositary or its nominee as to the exercise of the voting rights.

If the depositary timely receives voting instructions from holders of at least 51% of the outstanding ADSs to vote in the same manner on a resolution, including election of directors and/or supervisors, the depositary will cause all of the shares underlying the outstanding ADSs to be voted in the manner instructed. If for any reason, other than our failure to provide timely notice to the depositary of a shareholders’ meeting, the depositary does not receive timely instructions from holders of at least 51% of all ADSs outstanding to vote in the same manner on a resolution, including a resolution for the election of directors and/or supervisors, the holders of all ADSs outstanding shall be deemed, subject to our satisfying the applicable requirements of the deposit agreement, to have authorized and directed the depositary to give a discretionary proxy to the chairman of our board of directors, or the chairman’s designee, to vote the shares on deposit in respect of their ADSs in his discretion, which may not be in the interest of the holders of ADSs.

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An ADS holder will not be able to exercise cumulative voting rights on an individual basis in the elections of directors and/or supervisors under the deposit agreement. This means that if at least 51% of the votes represented by outstanding ADSs are cast for a particular director or supervisor for a particular open position in an election, the depositary shall, subject to the terms of the deposit agreement, cause all of the shares underlying the outstanding ADSs to be voted in favor of the director or supervisor.

By accepting and continuing to hold ADSs or any interest therein, a holder will be deemed to have agreed to the voting provisions set forth in the deposit agreement, as such provisions may be amended from time to time to comply with applicable R.O.C. law.

There can be no assurance that a holder will receive notice of shareholders’ meetings sufficiently prior to the date established by the depositary for receipt of instructions to enable him to give timely voting instructions.

C. Material Contracts

Immunity Agreement with Freescale Semiconductor, Inc.

We entered into a license agreement with Motorola Inc. or Motorola, in November 1996 under which Motorola licensed to us the technology for ball grid array as well as any future technology relating to ball grid array packages.

In April 2004, Motorola spun off its semiconductor product business into a subsidiary Freescale Semiconductor, Inc. Motorola has assigned this agreement to Freescale Semiconductor, Inc., and Freescale Semiconductor, Inc. has assumed all of its rights, duties and obligations under the agreement, in connection with the spin-off. This license will expire in December 2015.

License Agreement with Flip Chip International, L.L.C.

We entered into a license agreement in November 1999, under which Flip Chip International licensed to us the package design technology that enables us to attach silicon dies directly to substrates using solder bumping rather than wire bonding technology. Under the original terms of this agreement, we made royalty payments based on the number of bumped wafers produced. This original license was set to expire in November 2009.

In December 2008, we amended our license agreement with Flip Chip International, in which for a one-time payment, Flip Chip International granted us a perpetual license for the package design technology.

D. Exchange Controls

We have extracted from publicly available documents the information presented in this section. Please note that citizens of the People’s Republic of China and entities organized in the People’s Republic of China are subject to special Republic of China laws, rules and regulations, which are not discussed in this section.

General

Historically, foreign investments in the securities market of Taiwan were restricted. However, commencing in 1983, the Taiwan government has from time to time enacted legislation and adopted regulations to make foreign investment in the Taiwan securities market possible. Initially, only overseas investment trust funds of authorized securities investment trust enterprises established in Taiwan were permitted to invest in the Taiwan securities market. Since January 1, 1991, qualified foreign institutional investors are allowed to make investments in the Taiwan listed securities market. Since March 1, 1996, overseas Chinese, non-resident foreign institutional and individual investors (other than qualified foreign institutional investors), called “general foreign investors,” are permitted to make direct investments in the Taiwan securities market.

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Foreign Investment in Taiwan Securities Market

On December 28, 1990, the Executive Yuan, the cabinet of the Republic of China government, approved guidelines drafted by the Securities and Futures Commission (the predecessor of the Securities and Futures Bureau), which, since January 1, 1991, has allowed direct foreign investment in Taiwan’s securities that are listed on the Taiwan Stock Exchange or other Taiwan securities approved by the Securities and Futures Bureau by certain eligible qualified foreign institutional investors.

In addition to qualified foreign institutional investors, certain individual and foreign institutional investors which meet certain qualifications set by the Securities and Futures Bureau may invest in the shares of Taiwan Stock Exchange-listed companies, GreTai Securities Market (formerly known as Over-The-Counter Securities Exchange) traded companies, emerging market companies or other Taiwan securities approved by the Securities and Futures Bureau up to a limit of US$50 million (in the case of institutional investors) and US$5 million (in the case of individual investors) after obtaining permission from the Taiwan Stock Exchange.

On September 30, 2003 and June 15, 2004, the Securities and Futures Bureau issued amendments to the “Regulations Governing Investment in Securities by Overseas Chinese and Foreign Nationals” and relevant regulations, in which the Securities and Futures Bureau lifted certain restrictions and simplified the procedures required for foreign investments in Taiwan’s securities market. The amendment focuses mainly on the following aspects:

• The concept of “qualified foreign institutional investors” no longer exists. Foreign investors are reclassified as “off-shore foreign institutional investors,” “on-shore foreign institutional investors,” “off-shore general foreign investors,” and “on-shore general foreign investors” based on whether they are institutions or natural persons, and whether they have presence in Taiwan.

• For foreign investors to invest in Taiwan’s securities market, registration with the Taiwan Stock Exchange, instead of the approval of the Securities and Futures Bureau, is required. The Taiwan Stock Exchange may withdraw or rescind the registration if the application documents submitted by foreign investors are untrue or incomplete, or if any material violation of the relevant regulations exists.

• Off-shore foreign investors may provide the securities they hold as the underlying shares of depositary receipts and act as selling stockholders in depositary receipts offerings.

• Off-shore foreign institutional investors are required to appoint their agent or nominee to attend the stockholders’ meeting of the invested company.

Currently, subject to the specific restriction imposed by relevant regulations, the off-shore foreign institutional investors may invest in the Taiwan securities market without any amount restriction. However, a ceiling will be separately determined by the Securities and Futures Bureau after consultation with the Central Bank of the Republic of China (Taiwan) for investment by offshore oversea Chinese and foreign individual investors.

Foreign Investment Approval

Other than:

• foreign institutional investors;

• foreign individual investors; and

• investors in overseas convertible bonds and depositary receipts,

foreign investors who wish to make direct investments in the shares of Taiwan companies may submit a “foreign investment approval” application to the Investment Commission of the Ministry of Economic Affairs of Taiwan or other government authority to qualify for benefits granted under the Statute for Investment by Foreign Nationals. The Investment Commission or other government authority reviews each foreign investment approval application and approves or disapproves the application after consultation with other governmental agencies. Any non-Taiwan person possessing a foreign investment approval may remit capital for the approved investment and repatriate annual net profits and interests and cash dividends attributable to an approved investment. Stock dividends, investment capital and capital gains attributable to the investment may be repatriated with approval of the Investment Commission or other government authority.

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In addition to the general restrictions against direct investment by non-Taiwan persons in Taiwan companies, non-Taiwan persons are currently prohibited from investing in prohibited industries in Taiwan under the Negative List promulgated by the Executive Yuan from time to time. The prohibition on direct foreign investment in the prohibited industries in the Negative List is absolute with the consequence of certain specific exemption from the application of the Negative List. Under the Negative List, some other industries are restricted so that non-Taiwan persons may directly invest only up to a specified level and with the specific approval of the relevant authority which is responsible for enforcing the legislation which the negative list is intended to implement.

The R.O.C. Financial Supervisory Commission announced on April 30, 2009 the Regulations Governing Mainland Chinese Investors’ Securities Investments (“PRC Regulations”). According to the PRC Regulations, a qualified domestic institutional investor (“QDII”) is allowed to invest in Taiwan Securities (including up to 10% shareholding of a Taiwan company listed on Taiwan Stock Exchange or Over-the-Counter (GreTai) Securities Market). There is no assurance that in the future, there will not be further restrictions or prohibitions imposed on PRC persons (including QDIIs) from investing in certain industries in Taiwan. In addition to investments permitted under the PRC Regulations, PRC investors other than QDII are prohibited from making investments in a Taiwan company listed on the Taiwan Stock Exchange or the Over-the-Counter (GreTai) Securities Market if the investment is less than 10% of the equity interest of such Taiwan company.

In addition to the general restriction against direct investment by PRC investors in securities of Taiwan companies, PRC investors may only invest in certain industries in the Positive List, as promulgated by the R.O.C. Executive Yuan. In the semiconductor packaging and testing industry, PRC investors are allowed to invest up to 10% in existing Taiwan companies, and up to 50% in new ventures, but are not allowed to be controlling shareholders of the Taiwan companies in which they invest.

Depositary Receipts

In April 1992, the Securities and Futures Bureau began allowing Taiwan companies listed on the Taiwan Stock Exchange, with the prior approval of the Securities and Futures Bureau, to sponsor the issuance and sale of depositary receipts evidencing depositary shares. In December 1994, the Republic of China Ministry of Finance began allowing companies whose shares are traded on the GreTai Securities Market also to sponsor the issuance and sale of depositary receipts evidencing depositary shares representing shares of its capital stock. Approvals for these issuances are still required.

After the issuance of a depositary share, a holder of the depositary receipt evidencing the depositary shares may request the depositary issuing the depositary share to cause the underlying shares to be sold in Taiwan and to distribute the proceeds of the sale to or to withdraw the shares and deliver the shares to the depositary receipt holder. A citizen of the People’s Republic of China is not permitted to withdraw and hold our shares.

If you are an offshore foreign institutional investor holding the depositary receipts, you must register with the Taiwan Stock Exchange as a foreign investor before you will be permitted to withdraw the shares represented by the depositary receipts. In addition to obtaining registration with the Taiwan Stock Exchange, you must also (i) appoint a qualified local agent to, among other things, open a securities trading account with a local securities brokerage firm and a bank account to remit funds, exercise stockholders’ rights and perform other functions as holders of ADSs may designate, (ii) appoint a custodian bank to hold the securities and cash proceeds, confirm transactions, settle trades and report and declare other relevant information and; (iii) appoint a tax guarantor as guarantor for the full compliance of the withdrawing depositary receipt holders’ tax filing and payment obligations in the Republic of China. A depositary receipt holder not registered as a foreign investor with the Taiwan Stock Exchange, or not has made the necessary appointments as outlined above, will be unable to hold or subsequently transfer the shares withdrawn from the depositary receipt facility.

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No deposits of shares may be made in a depositary receipt facility and no depositary shares may be issued against deposits without specific Securities and Futures Bureau approval, unless they are:

(i) stock dividends;

(ii) free distributions of shares;

(iii) due to the exercise by the depositary receipt holder preemptive rights in the event of capital increases for cash; or

(iv) if permitted under the deposit agreement and custody agreement and within the amount of depositary receipts which have been withdrawn, due to the direct purchase by investors or purchase through the depositary on the Taiwan Stock Exchange or the GreTai Securities Market or delivery by investors of the shares for deposit in the depositary receipt facility. In this event, the total number of depositary receipts outstanding after an issuance cannot exceed the number of issued depositary receipts previously approved by the Securities and Futures Bureau of the Financial Supervisory Commission in connection with the offering plus any ADSs issued pursuant to the events described in (i), (ii) and (iii) above.

An ADS holder or the depositary, without obtaining further approvals from the Central Bank of the Republic of China (Taiwan) or any other governmental authority or agency of the Republic of China, may convert NT dollars into other currencies, including U.S. dollars, in respect of:

• the proceeds of the sale of common shares represented by ADSs or received as share dividends with respect to the common shares and deposited into the depositary receipt facility; and

• any cash dividends or distributions received from the common shares.

In addition, the depositary may also convert into NT dollars incoming payments for purchases of common shares for deposit in the depositary receipt facility against the creation of additional ADSs. If you withdraw the common shares underlying your ADSs and become a holder of our common shares, you may convert into NT dollars subscription payment for rights offerings. The depositary may be required to obtain foreign exchange payment approval from the Central Bank of the Republic of China (Taiwan) on a payment-by-payment basis for conversion from NT dollars into foreign currencies of the proceeds from the sale of subscription rights of new common shares. Although it is expected that the Central Bank of the Republic of China (Taiwan) will grant approval as a routine matter, required approvals may not be obtained in a timely manner, or at all.

Exchange Controls

Taiwan’s Foreign Exchange Control Statute and regulations provide that all foreign exchange transactions must be executed by banks designated to handle foreign exchange transactions by the Financial Supervisory Commission and by the Central Bank of the Republic of China (Taiwan). Current regulations favor trade-related foreign exchange transactions. Consequently, foreign currency earned from exports of merchandise and services may now be retained and used freely by exporters. All foreign currency needed for the importation of merchandise and services may be purchased freely from the designated foreign exchange banks.

Aside from trade-related foreign exchange transactions, Taiwan companies and residents may remit to and from Taiwan foreign currencies of up to US$50 million (or its equivalent) and US$5 million, (or its equivalent), respectively, in each calendar year. These limits apply to remittances involving a conversion between New Taiwan dollars and U.S. dollars or other foreign currencies. A requirement is also imposed on all private enterprises to register all medium and long-term foreign debt with the Central Bank of the Republic of China (Taiwan).

In addition, a foreign person without an alien resident card or an unrecognized foreign entity may remit to and from Taiwan foreign currencies of up to US$100,000 per remittance if required documentation is provided to Taiwan authorities. This limit applies only to remittances involving a conversion between New Taiwan dollars and U.S. dollars or other foreign currencies.

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E. Taxation

R.O.C. Tax Considerations

The following summarizes the principal R.O.C. tax consequences of owning and disposing of ADSs and shares for non-residents of Taiwan. Investors in our ADSs are advised to consult their own tax advisers as to United States, Taiwan or other tax consequences of the purchase, ownership and disposition of ADSs.

The following is a general summary of the principal R.O.C. tax consequences of the ownership and disposition of ADSs representing common shares to a non-resident individual or entity. The summary description applies only to a holder that is:

• an individual who is not an R.O.C. citizen, who owns ADSs and who is not physically present in the R.O.C. for 183 days or more during any calendar year; or

• a corporation or a non-corporate body that is organized under the laws of a jurisdiction other than the R.O.C. for profit-making purposes and has no fixed place of business or other permanent establishment in the R.O.C.

Holders of ADSs are urged to consult their own tax advisors as to their particular R.O.C. tax consequences from owning the ADSs.

Dividends

Dividends declared by us out of our retained earnings and distributed to the holders are subject to R.O.C. withholding tax, currently at the rate of 20%, on the amount of the distribution, in the case of cash dividends, or on the par value of the common shares in the case of stock dividends. However, a 10% R.O.C. retained earnings tax paid by us on our undistributed after-tax earnings, if any, would provide a credit of up to 10% of the gross amount of any dividends declared out of those earnings that would reduce the 20% R.O.C. tax imposed on those distributions.

Capital Gains

Under R.O.C. law, capital gains on transactions in the common shares are currently exempt from income tax. In addition, transfers of ADSs are not regarded as a sale of an R.O.C. security and, as a result, any gains on such transactions are not subject to R.O.C. income tax.

Securities Transaction Tax

A securities transaction tax, at the rate of 0.3% of the sales proceeds, will be withheld upon a sale of common shares in the R.O.C. Transfers of ADSs are not subject to R.O.C. securities transaction tax. Withdrawal of common shares from the deposit facility is not subject to R.O.C. securities transaction tax.

Estate and Gift Tax

R.O.C. estate tax is payable on any property within the R.O.C. of a deceased who is an individual, and R.O.C. gift tax is payable on any property within the R.O.C. donated by an individual. Estate tax is currently payable at rate of 10%. Gift tax is payable at rate of 10%. Under R.O.C. estate and gift tax laws, common shares issued by R.O.C. companies are deemed located in the R.O.C. regardless of the location of the holder. It is unclear whether a holder of ADSs will be considered to hold common shares for this purpose.

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Tax Treaty

The R.O.C. does not have a double taxation treaty with the United States. On the other hand, the R.O.C. has double taxation treaties with Indonesia, Singapore, South Africa, Australia, Vietnam, New Zealand, Malaysia, Macedonia, Swaziland, Gambia, The Netherlands, the United Kingdom, Senegal and Sweden which may limit the rate of R.O.C. withholding tax on dividends paid with respect to common shares in R.O.C. companies. It is unclear whether ADS holders will be considered holders of common shares for the purposes of these treaties. Accordingly, if the holders may otherwise be entitled to the benefits of the relevant income tax treaty, the holders should consult their tax advisors concerning their eligibility for the benefits with respect to the ADSs.

U.S. Federal Income Tax Considerations For U.S. Persons

The following is a summary of the material U.S. federal income tax consequences for beneficial owners of our shares or ADSs that hold the shares or ADSs as capital assets, and that are U.S. holders and non-residents of the R.O.C. You are a U.S. holder if you are, for U.S. federal income tax purposes, any of the following:

• an individual citizen or resident of the United States;

• a corporation (or other entity treated as a corporation) created or organized in or under the laws of the United States, any state thereof or the District of Columbia;

• an estate the income of which is subject to U.S. federal income taxation regardless of its source;

• a trust that is subject to the primary supervision of a court within the United States and one or more U.S. persons have the authority to control all substantial decisions of the trust; or

• a trust that has a valid election in effect under applicable U.S. Treasury regulations to be treated as a U.S. person.

This summary is based on the provisions of the Internal Revenue Code of 1986, as amended, or the Code, and regulations, rulings and judicial decisions thereunder as of the date hereof, and such authorities may be replaced, revoked or modified so as to result in U.S. federal income tax consequences different from those discussed below. It is for general purposes only and you should not consider it to be tax advice. In addition, it is also based in part on representations by the depositary and assumes that each obligation under the deposit agreement and any related agreement will be performed in accordance with its terms. This summary does not represent a detailed description of all the U.S. federal income tax consequences to you in light of your particular circumstances and does not address the effects of any state, local or non-U.S. tax laws (or other U.S. federal tax consequences, such as U.S. federal estate or gift tax consequences). In addition, it does not represent a detailed description of the U.S. federal income tax consequences applicable to you if you are subject to special treatment under the U.S. federal income tax laws, including if you are:

• a dealer in securities or currencies;

• a trader in securities if you elect to use a mark-to-market method of accounting for your securities holdings;

• a financial institution or an insurance company;

• a tax-exempt organization;

• a regulated investment company;

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• a real estate investment trust;

• a person liable for alternative minimum tax;

• a person holding shares or ADSs as part of a hedging, integrated or conversion transaction, constructive sale or straddle;

• a partnership or other pass-through entity for U.S. federal income tax purposes;

• a person owning, actually or constructively, 10% or more of our voting stock; or

• a U.S. holder whose “functional currency” is not the United States dollar.

We cannot assure you that a later change in law will not alter significantly the tax considerations that we describe in this summary.

If a partnership holds our shares or ADSs, the tax treatment of a partner will generally depend upon the status of the partner and the activities of the partnership. If you are a partner of a partnership holding our shares or ADSs, you should consult your tax advisor.

You should consult your own tax advisor concerning the particular U.S. federal income tax consequences to you of the ownership and disposition of the shares or ADSs, as well as the consequences to you arising under the laws of any other taxing jurisdiction.

In general, for U.S. federal income tax purposes, a U.S. person who is the beneficial owner of an ADS will be treated as the owner of the shares underlying its ADS. Deposits or withdrawals of shares by U.S. holders for ADSs generally will not be subject to U.S. federal income tax.

Taxation of Dividends

Except as discussed below with respect to the passive foreign investment company rules, the amount of distributions (other than certain pro rata distributions of shares to all shareholders) you receive on your shares or ADSs, including net amounts withheld in respect of R.O.C. withholding taxes, will generally be treated as dividend income to you if the distributions are made from our current and accumulated earnings and profits as calculated according to U.S. federal income tax principles. In determining the net amounts withheld in respect of R.O.C. taxes, any reduction in the amount withheld on account of a R.O.C. credit in respect of the 10% retained earnings tax imposed on us is not considered a withholding tax and will not be treated as distributed to you or creditable by you against your U.S. federal income tax. Such income will be includible in your gross income as ordinary income on the day you actually or constructively receive it, which in the case of an ADS will be the date actually or constructively received by the depositary. The amount of any distribution of property other than cash will be the fair market value of such property on the date it is distributed. You will not be entitled to claim a dividend received deduction with respect to distributions you receive from us.

With respect to U.S. holders who are individuals, certain dividends received from a foreign corporation before January 1, 2013, on shares (or ADSs backed by such shares) that are readily tradable on an established securities market in the United States may be subject to reduced rates of taxation. U.S. Treasury Department guidance indicates that our ADSs, which are listed on the NASDAQ, but not our shares, are readily tradable on an established securities market in the United States. Thus, we do not believe that dividends that we pay on our shares that are not backed by ADSs currently meet the conditions required for these reduced tax rates. There can be no assurance that our ADSs will continue to be readily tradable on an established securities market in later years (or that our shares will be readily tradable on an established securities market in any given year). Individuals that do not meet a minimum holding period requirement during which they are not protected from the risk of loss or that elect to treat the dividend income as “investment income” pursuant to Section 163(d)(4) of the Code will not be eligible for the reduced rates of taxation regardless of the trading status of our shares or ADSs. In addition, the rate reduction will not apply to dividends if the recipient of a dividend is obligated to make related payments with respect to positions in substantially similar or related property. This disallowance applies even if the minimum holding period has been met. Holders should consult their own tax advisors regarding the application of these rules given their particular circumstances.

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The amount of any dividend paid in a currency other than the United States dollar, such as NT dollars, which we refer to as “foreign currency,” will equal the U.S. dollar value of the foreign currency you receive, calculated by reference to the exchange rate in effect on the date you actually or constructively receive the dividend, which in the case of an ADS will be the date actually or constructively received by the depositary, regardless of whether the foreign currency is actually converted into U.S. dollars. If the foreign currency received as a dividend is not converted into U.S. dollars on the date of receipt, you will have a basis in the foreign currency equal to its U.S. dollar value on the date of receipt. Any gain or loss you realize if you subsequently sell or otherwise dispose of the foreign currency will be ordinary income or loss from sources within the United States for foreign tax credit limitation purposes.

Subject to certain limitations under the Code, you may be entitled to a credit or deduction against your federal income taxes for the net amount of any R.O.C. taxes that are withheld from dividend distributions made to you. The election to receive a credit or deduction must be made annually, and applies to all foreign taxes for the applicable tax year. The limitation on foreign taxes eligible for credit is calculated separately with respect to specific classes of income. For this purpose, dividends we pay with respect to shares or ADSs will generally be considered passive category income from sources outside the U.S. Furthermore, you will not be allowed a foreign tax credit for foreign taxes imposed on dividends paid on shares or ADSs if you (1) have held shares or ADSs for less than a specified minimum period during which you are not protected from risk of loss, or (2) are obligated to make payments related to the dividends. The rules governing the foreign tax credit are complex. We therefore urge you to consult your tax advisor regarding the availability of the foreign tax credit under your particular circumstances.

To the extent that the amount of any distribution you receive exceeds our current and accumulated earnings and profits for a taxable year as determined under U.S. federal income tax principles, the distribution will first be treated as a tax-free return of capital, causing a reduction in your adjusted basis in the shares or ADSs and thereby increasing the amount of gain, or decreasing the amount of loss, you will recognize on a subsequent disposition of the shares or ADSs. The balance in excess of adjusted basis, if any, will be taxable to you as capital gain recognized on a sale or exchange. However, we do not expect to keep earnings and profits in accordance with U.S. federal income tax principles. Therefore, you should expect that a distribution will generally be treated as a dividend, as discussed above.

It is possible that pro rata distributions of shares or ADSs to all shareholders may be made in a manner that is not subject to U.S. federal income tax. In the event that such distributions are tax-free, the basis of any new shares or ADSs so received will generally be determined by allocating the U.S. holder’s basis in the old share or ADSs between the old shares or ADSs and the new shares or ADSs, based on their relative fair market values on the date of distribution. For U.S. tax purposes, any such tax-free share or ADS distribution and any distributions in excess of current and accumulated earnings and profits generally would not result in foreign source income to you. Consequently, you may not be able to use the foreign tax credit associated with any R.O.C. withholding tax imposed on such distributions unless you can use the credit against United States tax due on other foreign source income in the appropriate category for foreign tax credit purposes. You should consult your own tax advisors regarding all aspects of the foreign tax credit.

Taxation of Capital Gains

Except as discussed below with respect to the passive foreign investment company rules, when you sell or otherwise dispose of your shares or ADSs, you will generally recognize capital gain or loss in an amount equal to the difference between the U.S. dollar value of the amount realized for the shares or ADSs and your basis in the shares or ADSs, determined in U.S. dollars. For foreign tax credit limitation purposes, such gain or loss will generally be treated as U.S. source. If you are an individual, and the shares or ADSs being sold or otherwise disposed of are capital assets that you have held for more than one year, your gain recognized will be eligible for reduced rates of taxation. Your ability to deduct capital losses is subject to limitations.

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If you pay any R.O.C. securities transaction tax, such tax is not treated as an income tax for U.S. federal income tax purposes, and therefore will not be a creditable foreign tax for U.S. federal income tax purposes. However, subject to limitations under the Code, such tax may be deductible. You are urged to consult your tax advisors regarding the U.S. federal income tax consequences of these taxes.

Passive Foreign Investment Company

Based on the composition of our income and valuation of our assets, including goodwill, we do not believe we were a passive foreign investment company, or PFIC, for 2010 and do not expect to become one in the future, although there can be no assurance in this regard.

In general, a non-U.S. company is considered a PFIC for any taxable year if either:

• at least 75% of its gross income is passive income, which generally includes income derived from certain dividends, interest, royalties and rents (other than royalties and rents derived in the active conduct of a trade or business or not derived from a related person), annuities or property transactions; or

• at least 50% of the value of its assets is attributable to assets that produce or are held for the production of passive income.

The 50% of value test is based on the average of the value of our assets for each quarter during the taxable year. If we own at least 25% by value of another company’s stock, we will be treated, for purposes of the PFIC rules, as owning our proportionate share of the assets and receiving our proportionate share of the income of that company.

Our determination that we were not a PFIC in 2010 is based on a current valuation of our assets, including goodwill. In calculating goodwill, we have valued our total assets based on our total market value, which is based on the market value of our shares and is subject to change.

In addition, the determination of whether we are a PFIC is made annually. Accordingly, it is possible that we may become a PFIC in the current or any future taxable year due to changes in our asset or income composition.

If we are a PFIC for any taxable year during which you hold our shares or ADSs, you will be subject to special tax rules with respect to any “excess distribution” that you receive and any gain you realize from a sale or other disposition (including a pledge) of our shares or ADSs. Distributions you receive in a taxable year that are greater than 125% of the average annual distributions you received during the shorter of the three preceding taxable years or your holding period for our shares or ADSs will be treated as excess distributions. Under these special tax rules:

• the excess distribution or gain will be allocated ratably over your holding period for our shares or ADSs;

• the amount allocated to the current taxable year, and any taxable year prior to the first taxable year in which we were a PFIC, will be treated as ordinary income; and

• the amount allocated to each other year will be subject to tax at the highest tax rate in effect for that year and the interest charge generally applicable to underpayments of tax will be imposed on the resulting tax attributable to each such year.

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If you hold our shares or ADSs in any year in which we are a PFIC, you are required to file Internal Revenue Service Form 8621.

If we are a PFIC for any taxable year and any of our non-U.S. subsidiaries is also a PFIC, a U.S. holder would be treated as owning a proportionate amount (by value) of the shares of the lower-tier PFIC for purposes of the application of these rules. You are urged to consult your tax advisors about the application of the PFIC rules to any of our subsidiaries.

In certain circumstances, a U.S. holder, in lieu of being subject to the PFIC rules discussed above, may make an election to include gain on the stock of a PFIC as ordinary income under a mark-to-market method provided that such stock is regularly traded on a qualified exchange. Under this method, any difference between the stock’s fair market value and its adjusted basis at the end of the year is accounted for by either an inclusion in income or a deduction from income, as described below. Under current U.S. Treasury Department guidance, the mark-to-market election may be available to you because the ADSs are listed on the NASDAQ Stock Market’s National Market which constitutes a qualified exchange, although there can be no assurance that the ADSs will be “regularly traded” for the purposes of the mark-to-market election. You should also note that only the ADSs and not the shares are listed on the NASDAQ Stock Market’s National Market. The shares are listed on the Taiwan Stock Exchange, which must meet certain trading, listing, financial disclosure and other requirements to be treated as a qualified exchange under applicable U.S. Treasury regulations for purposes of the mark-to-market election, and no assurance can be given that the shares will be “regularly traded” for purposes of the mark-to-market election.

If you make an effective mark-to-market election, you will include in income each year as ordinary income the excess of the fair market value of your PFIC shares or ADSs at the end of the year over your adjusted tax basis in the shares. You will be entitled to deduct as an ordinary loss each year the excess of your adjusted tax basis in the shares or ADSs over their fair market value at the end of the year, but only to the extent of the net amount previously included in income as a result of the mark-to-market election. If you make an effective mark-to-market election, any gain you recognize upon the sale or other disposition of your PFIC shares or ADSs will be treated as ordinary income and any loss will be treated as ordinary loss, but only to the extent of the net amount of previously included income as a result of the mark-to-market election.

Your adjusted tax basis in PFIC shares or ADSs will be increased by the amount of any income inclusion and decreased by the amount of any deductions under the mark-to-market rules. If you make a mark-to-market election, it will be effective for the taxable year for which the election is made and all subsequent taxable years, unless the shares or ADSs are no longer regularly traded on a qualified exchange or the Internal Revenue Service consents to the revocation of the election. You should consult your tax advisor about the availability of the mark-to-market election, and whether making the election would be advisable in your particular circumstances.

Alternatively, a U.S. holder of shares or ADSs in a PFIC can sometimes avoid the rules described above by electing to treat the PFIC as a “qualified electing fund” under section 1295 of the Code. This option is not available to you because we do not intend to comply with the requirements necessary to permit you to make this election.

U.S. holders who are individuals will not be eligible for reduced rates of taxation on any dividends received from us prior to January 1, 2013, if we are a PFIC in the taxable year in which such dividends are paid or in the preceding taxable year. You should consult your own tax advisors concerning the U.S. federal income tax consequences of holding our shares or ADSs if we are considered a PFIC in any taxable year.

Information Reporting and Backup Withholding

In general, unless you are an exempt recipient, information reporting will apply to dividends in respect of the shares or ADSs and to the proceeds from the sale, exchange or redemption of your shares or ADSs that are paid to you within the United States (and in some cases, outside of the United States). Additionally, if you fail to provide your taxpayer identification number, or fail either to report in full dividend and interest income or to make the necessary certifications of other exempt status, you may be subject to backup withholding.

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Any amounts withheld under the backup withholding rules will be allowed as a refund or a credit against your U.S. federal income tax liability, provided you furnish the required information to the Internal Revenue Service.

Inheritance and Gift Tax

Certain R.O.C. inheritance and gift taxes may be imposed on holders of ADSs. You should consult your own tax advisor regarding the effect of such taxes on your particular situation.

F. Dividends and Paying Agents

Not applicable.

G. Statement by Experts

Not applicable.

H. Documents on Display

We have filed this annual report on Form 20-F, including exhibits, with the SEC. As allowed by the SEC, in Item 19 of this annual report, we incorporate by reference certain information we filed with the SEC. This means that we can disclose important information to you by referring you to another document filed separately with the SEC. The information incorporated by reference is considered to be part of this annual report.

You may read and copy this annual report, including the exhibits incorporated by reference in this annual report, at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549 and at the SEC’s regional offices in New York, New York, and Chicago, Illinois. You can also request copies of this annual report, including the exhibits incorporated by reference in this annual report, upon payment of a duplicating fee, by writing to the SEC’s Public Reference Room for information.

The SEC also maintains a website at www.sec.gov that contains reports, proxy statements and other information regarding registrants that file electronically with the SEC. Our annual report and some of the other information submitted by us to the SEC may be accessed through this website.

I. Subsidiary Information

Not applicable.

Item 11. Quantitative and Qualitative Disclosures About Market Risk

Market risk is the risk of loss related to adverse changes in market prices, including interest rates and foreign exchange rates, of financial instruments. We are exposed to various types of market risks, including changes in interest rates, foreign currency exchange rates and commodity price risk, in the normal course of business.

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Foreign Exchange Risk

Substantial portions of our revenues and expenses are denominated in currencies other than the NT dollar. In 2010, sales in the amount of US$1,517 million were denominated in U.S. dollars. In 2010, material purchases from our overseas vendors in the amounts of US$474 million and ¥8,029 million were denominated in U.S. dollars and Japanese yen, respectively. As of December 31, 2010, we had certificates of deposit, bank deposits and accounts receivable denominated in U.S. dollars of US$320 million. As of December 31, 2010, we also had accounts payable and other liabilities denominated in U.S. dollars and the Japanese yen of US$145 million and of ¥3,868 million, respectively. Our foreign currency revenues in general exceed our foreign currency expenses. We use the policy of natural hedging to reduce our foreign exchange exposure arising out of changes in the rates of exchange among the Japanese Yen, the U.S. dollar and the NT dollar. The table below presents our financial instruments with foreign exchange risk as of December 31, 2010:

	Expected Maturity Date
Expressed in NT$ amount (in millions)	2011		2012		2013		2014		2015		Thereafter		Total		Fair value
On-balance sheet financial instruments
Assets
Time Deposit (US$)		1,308.60		—		—		—		—		—		1,308.60		1,308.60
Liabilities
Short-term Loans (US$)		50.00		—		—		—		—		—		50.00		50.00
Long-term Loans (US$)		—		—		50.00		50.00		50.00		—		150.00		150.00

Interest Rate Risk

Our major market risk exposure is changing interest rates. Our exposure to market risk for changes in interest rates relates primarily to our long-term debt obligations. We primarily enter into debt obligations to support general corporate purposes including capital expenditures and working capital needs. We have not entered into any interest rate swaps, caps or any contracts hedge to modify our exposure to interest rate movements.

As of December 31, 2010, we had NT$4,377 (US$150.2 million) of long-term borrowings. Our future interest expense on our long-term borrowings may increase or decrease due to changes in market interest rates. Our long-term borrowings had a weighted average interest rate of 0.8911% per annum during 2010 and repayable in 6 semi-annual installments starting from April 2013.

Commodity Price Risk

The price of gold wire has been volatile and has fluctuated with the spot price of gold in recent years. We generally have not entered into long-term supply agreements and purchase our raw materials on a purchase order basis at the prevailing market price. In addition, we do not employ financial instruments to hedge such commodity price risk. Therefore, in order to effectively mitigate the risk, we have continued to implement measures to reduce our dependency on gold wire, such as the development of copper wire bonding process.

Item 12. Description of Securities Other Than Equity Securities

A. Debt Securities

Not applicable

B. Warrants and Rights

Not applicable

C. Other Securities

Not applicable

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D. American Depositary Shares

Depositary Fees

Under the terms of the deposit agreement for our ADSs, an ADS holder may have to pay the following service fees to the depositary:

Service	Fees
Issuance of ADSs	Up to US$0.05 per ADS issued
Cancellation of ADSs	Up to US$0.05 per ADS cancelled
Distribution of cash dividends or other cash distributions	Up to US$0.05 per ADS held
Distribution of ADSs pursuant to stock dividends, free stock distributions or exercises of rights	Up to US$0.05 per ADS held

Depositary Charges

In addition, an ADS holder shall be responsible for the following charges:

• taxes (including applicable interest and penalties) and other governmental charges;

• such registration fees as may from time to time be in effect for the registration of common shares or other deposited securities on the share register and applicable to transfers of common shares or other deposited securities to or from the name of the custodian, the depositary or any nominees upon the making of deposits and withdrawals, respectively;

• such cable, telex and facsimile transmission and delivery expenses as are expressly provided in the deposit agreement to be at the expense of ADS holders and beneficial owners of ADSs;

• the expenses and charges incurred by the depositary in the conversion of foreign currency;

• such fees and expenses as are incurred by the depositary in connection with compliance with exchange control regulations and other regulatory requirements applicable to common shares, deposited securities, ADSs and ADRs; and

• the fees and expenses incurred by the depositary, the custodian or any nominee in connection with the servicing or delivery of deposited securities.

Depositary fees payable upon the issuance and cancellation of ADSs are typically paid to the depositary by the brokers (on behalf of their clients) receiving the newly-issued ADSs from the depositary and by the brokers (on behalf of their clients) delivering the ADSs to the depositary for cancellation. The brokers in turn charge these transaction fees to their clients.

Depositary fees payable in connection with distributions of cash or securities to ADS holders and the depositary services fee are charged by the depositary to the holders of record of ADSs as of the applicable ADS record date. The depositary fees payable for cash distributions are generally deducted from the cash being distributed. In the case of distributions other than cash (i.e., stock dividends, rights offerings), the depositary charges the applicable fee to the ADS record date holders concurrent with the distribution. In the case of ADSs registered in the name of the investor (whether certificated or un-certificated in direct registration), the depositary sends invoices to the applicable record date ADS holders. In the case of ADSs held in brokerage and custodian accounts via the central clearing and settlement system, The Depository Trust Company, or DTC, the depositary generally collects its fees through the systems provided by DTC (whose nominee is the registered holder of the ADSs held in DTC) from the brokers and custodians holding ADSs in their DTC accounts. The brokers and custodians who hold their clients’ ADSs in DTC accounts in turn charge their clients’ accounts the amount of the fees paid to the depositary.

In the event of refusal to pay the depositary fees, the depositary may, under the terms of the deposit agreement, refuse the requested service until payment is received or may set off the amount of the depositary fees from any distribution to be made to the ADS holder.

The fees and charges ADS holders may be required to pay may vary over time and may be changed by us and by the depositary. ADS holders will receive prior notice of such changes.

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Payments by Depositary

In 2010, we received the following payments from Citibank, N.A., the depositary bank for our ADR program:

Item	US$ (in thousands)
Reimbursement of investor relations efforts		19.9
Reimbursement of legal and consulting fees		549.7
Reimbursement of listing fees		88.2
Reimbursement of proxy process expenses		258.6
Reimbursement of SEC filing and maintenance fees		1,169.4
Total		2,085.8

PART II

Item 13. Defaults, Dividend Arrearages and Delinquencies

None of these events occurred in any of the years ended December 31, 2008, 2009 and 2010.

Item 14. Material Modifications to the Rights of Security Holders and Use of Proceeds

See “Item 10. Additional Information” for a description of the rights of securities holders, which remain unchanged.

Item 15. Controls and Procedures

Disclosure Controls and Procedures

As of December 31, 2010, an evaluation has been carried out under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures, as such term is defined under Rules 13a-15(e) and 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended. Disclosure controls and procedures are designed to ensure that information required to be disclosed in the reports filed or submitted under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms and that such information is accumulated and communicated to our management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding the required disclosures. There are inherent limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the circumvention or overriding of the controls and procedures. Accordingly, even effective disclosure controls and procedures can only provide reasonable assurance of achieving their control objectives.

Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures are effective as of December 31, 2010.

Management’s Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rule 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended. A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

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Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2010 using the criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the “COSO criteria”). Based on this assessment, our management concluded that our internal control over financial reporting was effective as of December 31, 2010. The effectiveness of internal control over financial reporting has been audited by PricewaterhouseCoopers, Taiwan, an independent registered public accounting firm, which also audited our consolidated financial statements for the year ended December 31, 2010, as stated in their report included on page F-2.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the year ended December 31, 2010 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 16A. Audit Committee Financial Expert

Jing-Shan Aur is our audit committee financial expert and an independent director. See “Item 6. Directors, Senior Management and Employees—C. Board Practices—Audit Committee.”

Item 16B. Code of Ethics

We have adopted a code of ethics which applies to our directors, employees and officers, including our Chief Executive Officer and Chief Financial Officer (our principal accounting officer). No changes have been made to the code of ethics since its adoption and no waivers have been granted therefrom to our directors or employees. We have filed this code of ethics as an exhibit to our annual report on Form 20-F for the fiscal year ended December 31, 2003, which exhibit is incorporated by reference as an exhibit to this annual report, and a copy is available to any shareholder upon request. This code of ethics is also available on our website atwww.spil.com.tw.

Item 16C. Principal Accountant Fees and Services

PricewaterhouseCoopers, Taiwan has served as our independent public accountant for each of the fiscal years in the three-year period ended December 31, 2010, for which audited financial statements appear in this annual report.

The following table presents the aggregate fees for professional services and other services rendered by PricewaterhouseCoopers, Taiwan to us in 2009 and 2010.

	2009		2010		2010
	NT$		NT$		US$
	(in thousands)
Audit Fees(1)		18,450		18,610		638.6
Audit-related Fees(2)		380		180		6.2
Tax Fees(3)		3,170		3,210		110.2
All other Fees(4)		—		3,779		129.7
Total		22,000		25,779		884.7

(1) Audit fees consist of fees billed for the audit or review of our annual financial statements, internal control over financial reporting, quarterly financial statements, and related statutory and regulatory filings.

(2) Audit-related fees consist of fees billed for assurance and related services that are reasonably related to the performance of the audit or review of our financial statements and are not reported above as “Audit Fees”.

(3) Tax fees include fees billed for tax compliance services and tax advice services.

(4) All other fees include fees billed for consultations of financial accounting and reporting standards. Such fees paid during 2010 were primarily for the consultations regarding conversion from financial statements under R.O.C. GAAP to International Financial Reporting Standards, or IFRS.

75

Pre-approval Policies and Procedures

Our audit committee is responsible for the oversight of our independent accountants’ work. The policy of our audit committee is to pre-approve all audit and non-audit services provided by PricewaterhouseCoopers, Taiwan including audit services, audit-related services, tax services and other services, as described above.

All audit and non-audit services performed by PricewaterhouseCoopers, Taiwan for 2009 and 2010 were pre-approved by the Audit Committee.

Item 16D. Exemptions from the Listing Standards for Audit Committees

None.

Item 16E. Purchase of Equity Securities by the Issuer and Affiliated Purchasers

None.

Item 16F. Change in Registrant’s Certifying Accountant

Not applicable.

Item 16G. Corporate Governance

In general, corporate governance principles for Taiwanese companies are set forth in the R.O.C. Company Act, the R.O.C. Securities and Exchange Act and, to the extent they are listed on the Taiwan Stock Exchange, listing rules of the Taiwan Stock Exchange. Corporate governance principles under provisions of R.O.C. law may differ in significant ways to corporate governance standards for U.S. NASDAQ-listed companies. Under the latest amendment to the NASDAQ Listing Rule 5615, foreign private issuers are permitted to follow certain home country corporate governance practices in lieu of the requirements of the NASDAQ corporate governance rules. Under the amendment, foreign private issuers must disclose alternative home country practices they follow. The following are the requirements of the NASDAQ corporate governance rules we do not follow and the home country practices we follow.

Under the NASDAQ Listing Rule 5605(b)(1), a majority of the board of directors must comprise of independent directors. We have three independent directors out of a total of nine directors on our board. Our standards in determining director independence substantially comply with the NASDAQ requirements, which include detailed tests for determining director independence. In Taiwan, in order to strengthen corporate governance of Taiwanese companies, the R.O.C. Securities and Exchange Act Article 14-2 provides that public companies may appoint independent directors in accordance with its articles of incorporation, as long as it is compliant with related requirements and regulations of the R.O.C. The government authority, however, may require a company to appoint two or more independent directors, who shall account for one-fifth or more of its total directors, depending on such company’s scale, shareholder structure, type of operations and other essential factors.

76

Under NASDAQ Listing Rule 5605(b)(2), the company is required to have regularly scheduled meetings at which only independent directors are present. We do not hold executive sessions of non-management directors as the election of independent directors is not required by the R.O.C. Company Act. However, once our independent directors are elected, they will participate in committee meetings of which they are committee members. In particular, we expect our independent directors to serve on our audit committee. Our audit committee will meet regularly.

NASDAQ Listing Rule 5605(d) requires that compensation of the chief executive officer of the company must be determined, or recommended to the board, either by a majority of the independent director or an independent compensation committee. We currently follow the practice under R.O.C. Company Act, which requires that the compensation of directors be approved by shareholders. In addition, we also follow Article 29 of the R.O.C. Company Act, which provides that the compensation of executive officers of the company shall be decided by resolutions adopted by the majority of the board at a meeting satisfying a quorum of more than one-half of the directors.

Under NASDAQ Listing Rule 5605(e), director nominees must either be selected, or recommended for the Board’s selection, either by a majority of the independent directors or an independent nominations committee. The R.O.C. Company Act expressly grants the power of nomination to the shareholders, as well as to the board of directors. Under the R.O.C. Company Act and the interpretations thereof, candidates to serve as directors are nominated either by the board of directors prior to the shareholders’ meeting or by the shareholders during the election of the director. Therefore, the requirement of a nominations committee is in conflict with the R.O.C. Company Act. We currently follow the home country practice.

Under NASDAQ Listing Rule 5635(c), each issuer shall require shareholder approval when a stock option or purchase plan is to be established or materially amended or other equity compensation arrangement made or materially amended, pursuant to which stock may be acquired by officers, directors, employees, or consultants. Under the corresponding domestic requirements in the R.O.C. Company Act and the R.O.C. Securities and Exchange Act, shareholders’ approval is required for the distribution of employee bonuses in the form of stock, while the board of director has authority, subject to the approval of the R.O.C. SFB, to approve employee stock option plans and to grant options to employees pursuant to such plans. We follow the home country practice. R.O.C. law provides for specific safeguards on employee stock option grants. Options granted under the plans are subject to certain statutory volume limitations. Under the R.O.C. Company Act, the directors of a company may not receive stock options because they are not considered “employees” of the company.

77

PART III

Item 17. Financial Statements

We have elected to provide the financial statements and related information specified in Item 18.

Item 18. Financial Statements

The following is a list of the audited financial statements and report of independent registered public accounting firm included in this annual report beginning on page F-1.

	Page
SILICONWARE PRECISION INDUSTRIES CO., LTD.
Report of Independent Registered Public Accounting Firm		F-2
Consolidated Balance Sheets as of December 31, 2009 and 2010		F-4
Consolidated Statements of Income for the Years Ended December 31, 2008, 2009 and 2010		F-6
Consolidated Statements of Changes in Stockholders’ Equity for the Years Ended December  31, 2008, 2009 and 2010		F-7
Consolidated Statements of Cash Flows for the Years Ended December 31, 2008, 2009 and 2010		F-10
Notes to Consolidated Financial Statements		F-12

78

Item 19. Exhibit Index

Exhibit Number	Description of Exhibits
*1.1	Articles of Incorporation of Siliconware Precision Industries Co., Ltd., as amended on June 15, 2010 (English translation)
2.1	Form of the Second Amended and Restated Deposit Agreement among Siliconware Precision Industries Co., Ltd., Citibank, N.A. and Holders and Beneficial owners of American Depositary Shares issued thereunder, including the form of American Depositary Receipts(1)
4.1	Immunity Agreement with Motorola, Inc. (effective from November 5, 1996 to December 31, 2015)(2)
4.2	License Agreement with Flip Chip Technologies, L.L.C.(3)
4.3	Joint Venture Agreement with Mosel Vitelic, Inc. (English translation)(4)
*8.1	List of Significant Subsidiaries of Siliconware Precision Industries Co., Ltd.
11.1	Code of Ethics(5)
*12.1	Certification of our Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
*12.2	Certification of our Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
*13.1	Certification by our Chief Executive Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
*13.2	Certification by our Chief Financial Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

* filed herewith.

(1) Incorporated by reference to Exhibit 4.1 to our Registration Statement on Form F-1 (File No. 333-11812) filed with the SEC on April 29, 2000.

(2) Incorporated by reference to Exhibit 10.2 to our Registration Statement on Form F-1 (File No. 333-11812) filed with the SEC on April 29, 2000.

(3) Incorporated by reference to Exhibit 10.5 to our Registration Statement on Form F-1 (File No. 333-11812) filed with the SEC on April 29, 2000.

(4) Incorporated by reference to Exhibit 10.6 to our Registration Statement on Form F-1 (File No. 333-11812) filed with the SEC on April 29, 2000.

(5) Incorporated by reference to Exhibit 11.1 to our Annual Report on Form 20-F filed with the Securities and Exchange Commission on June 28, 2004.

79

SIGNATURES

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

SILICONWARE PRECISION INDUSTRIES CO., LTD.
By:	/S/    EVA CHEN
Name:	Eva Chen
Title:	Chief Financial Officer

Date: April 26, 2011

80

INDEX TO THE FINANCIAL STATEMENTS

	Page
SILICONWARE PRECISION INDUSTRIES CO., LTD.
Report of Independent Registered Public Accounting Firm		F-2
Consolidated Balance Sheets as of December 31, 2009 and 2010		F-4
Consolidated Statements of Income for the Years Ended December 31, 2008, 2009 and 2010		F-6
Consolidated Statements of Changes in Stockholders’ Equity for the Years Ended December  31, 2008, 2009 and 2010		F-7
Consolidated Statements of Cash Flows for the Years Ended December 31, 2008, 2009 and 2010		F-10
Notes to Consolidated Financial Statements		F-12

F-1

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of

Siliconware Precision Industries Co., Ltd.

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income, of changes in stockholders’ equity and of cash flows present fairly, in all material respects, the financial position of Siliconware Precision Industries Co., Ltd. and its subsidiaries at December 31, 2010 and December 31, 2009, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2010 in conformity with “Rules Governing the Preparation of Financial Reports by Securities Issuers” and accounting principles generally accepted in the Republic of China (“ROC GAAP”). Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2010, based on criteria established inInternal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s management is responsible for these financial statements, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in Management’s Annual Report on Internal Control Over Financial Reporting appearing under Item 15. Our responsibility is to express opinions on these financial statements and on the Company’s internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States) and auditing standards generally accepted in the Republic of China. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Accounting principles generally accepted in the Republic of China vary in certain significant respects from accounting principles generally accepted in the United States of America. Information relating to the nature and effect of such differences is presented in Notes 31 and 32 to the consolidated financial statements.

As discussed in Note 3, Commencing from January 1, 2008, the Company adopted R.O.C. EITF 96-052“Accounting for Employees’ Bonuses and Directors’ and Supervisors’ Remuneration” as prescribed by the Accounting Research and Development Foundation, R.O.C..

F-2

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Taichung, Taiwan

Republic of China

April 26, 2011

F-3

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(EXPRESSED IN THOUSANDS OF DOLLARS)

	December 31,
	2009			2010
	NT$			NT$			US$ (Note 2)
ASSETS
Current Assets
Cash and cash equivalents (Note 4)		19,615,161			15,519,008			532,567
Notes receivable, net		40,545			73,229			2,513
Accounts receivable, net (Note 5)		11,299,418			9,648,610			331,112
Other financial assets, current (Note 24)		462,428			1,296,089			44,478
Inventories (Note 6)		2,992,331			3,515,897			120,656
Deferred income tax assets, current (Note 20)		799,410			588,074			20,181
Other current assets – other		773,861			551,161			18,914
		35,983,154			31,192,068			1,070,421
Long-term Investments
Available-for-sale financial assets, noncurrent (Notes 7 and 28)		3,825,793			4,887,007			167,708
Financial assets carried at cost, noncurrent (Notes 8 and 28)		315,394			1,449,343			49,737
Long-term investment under the equity method (Note 9)		—			148,918			5,110
		4,141,187			6,485,268			222,555
Property, Plant and Equipment (Note 10)
Cost:
Land		2,903,192			2,903,192			99,629
Buildings		13,108,575			15,140,684			519,584
Machinery and equipment		53,002,069			52,257,238			1,793,317
Utility equipment		1,117,124			1,167,108			40,052
Furniture and fixtures		722,071			940,263			32,267
Other equipment		2,189,994			2,432,287			83,469
		73,043,025			74,840,772			2,568,318
Less:Accumulated depreciation		(37,909,299	)		(36,040,524	)		(1,236,806	)
Construction in progress and prepayments for equipment		1,182,399			4,126,547			141,611
		36,316,125			42,926,795			1,473,123
Other Assets
Refundable deposits		8,248			8,383			288
Deferred charges		487,234			711,966			24,432
Deferred income tax asset, noncurrent (Note 20)		1,106,205			1,072,709			36,812
Other assets – other		268,434			159,882			5,487
		1,870,121			1,952,940			67,019
TOTAL ASSETS		78,310,587			82,557,071			2,833,118

The accompanying notes are an integral part of these consolidated financial statements.

(Continued)

F-4

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (CONTINUED)

(EXPRESSED IN THOUSANDS OF DOLLARS)

	December 31,
	2009			2010
	NT$			NT$			US$ (Note 2)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Short-term loans (Notes 11 and 28)		225,488			1,461,281			50,147
Accounts payable (Note 23)		7,953,743			7,345,871			252,089
Income tax payable (Note 20)		849,351			520,613			17,866
Accrued expenses		3,526,756			3,075,442			105,540
Other payables (Notes 12 and 23)		2,253,304			3,954,824			135,718
Other current liabilities		196,346			185,575			6,368
		15,004,988			16,543,606			567,728
Long-term Liabilities
Long-term loans (Notes 13 and 28)		—			4,368,158			149,902
Other Liabilities (Note 14)
Other liabilities – other		224,373			349,126			11,981
Total Liabilities		15,229,361			21,260,890			729,611
Stockholders’ Equity
Capital stock (Notes 1 and 15)		31,163,611			31,163,611			1,069,444
Capital reserve (Note 16)
Additional paid in capital		14,290,224			14,290,224			490,399
Premium arising from merger		1,929,136			1,929,136			66,202
Other		234,167			234,167			8,036
Retained earnings (Note 17)
Legal reserve		5,720,419			6,599,402			226,472
Unappropriated earnings		8,937,249			5,644,961			193,719
Unrealized gain on available-for-sale financial assets		767,157			1,788,512			61,377
Cumulative translation adjustments		208,577			(85,264	)		(2,926	)
Net loss not recognized as pension cost		(169,314	)		(268,568	)		(9,216	)
Total Stockholders’ Equity		63,081,226			61,296,181			2,103,507
Commitments and Contingencies (Note 25)
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY		78,310,587			82,557,071			2,833,118

The accompanying notes are an integral part of these consolidated financial statements.

F-5

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$ (Note 2)
Net Operating Revenues		62,402,934			59,294,592			63,857,470			2,191,403
Cost of Goods Sold (Notes 6 and 23)		(49,453,501	)		(47,851,772	)		(54,041,264	)		(1,854,539	)
Gross Profit		12,949,433			11,442,820			9,816,206			336,864
Operating Expenses (Note 23)
Selling expenses		(942,653	)		(622,208	)		(392,391	)		(13,466	)
General and administrative expenses		(1,677,753	)		(1,401,541	)		(1,509,261	)		(51,793	)
Research and development expenses		(1,382,560	)		(1,276,041	)		(1,538,307	)		(52,790	)
		(4,002,966	)		(3,299,790	)		(3,439,959	)		(118,049	)
Operating Income		8,946,467			8,143,030			6,376,247			218,815
Non-operating Income and Gain
Interest income (Note 28)		366,086			49,221			36,849			1,265
Gain on disposal of investments (Note 7)		—			1,947,879			—			—
Others		351,465			263,511			303,674			10,421
		717,551			2,260,611			340,523			11,686
Non-operating Expenses and Losses
Interest expenses (Note 28)		(89,017	)		(36,850	)		(11,461	)		(394	)
Impairment loss (Notes 7 and 8)		(3,030,605	)		—			—			—
Others (Note 9)		(20,343	)		(153,653	)		(315,529	)		(10,828	)
		(3,139,965	)		(190,503	)		(326,990	)		(11,222	)
Income from Continuing Operations Before Income Tax		6,524,053			10,213,138			6,389,780			219,279
Income Tax Expense (Note 20)		(210,523	)		(1,423,309	)		(762,873	)		(26,180	)
Net Income		6,313,530			8,789,829			5,626,907			193,099
		For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
Basic Earnings Per Share ( in dollars ) (Note 21)
Net Income (Before Tax)		2.09			3.28			2.05			0.07
Net Income (After Tax)		2.03			2.82			1.81			0.06
Diluted Earnings Per Share ( in dollars ) (Note 21)
Net Income (Before Tax)		2.08			3.25			2.04			0.07
Net Income (After Tax)		2.01			2.80			1.80			0.06

The accompanying notes are an integral part of these consolidated financial statements.

F-6

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY

(EXPRESSED IN THOUSANDS OF DOLLARS)

					Capital Reserve								Unrealized  Gain (Loss) on Available-for- sale  Financial Assets			Cumulative Translation Adjustments		Net Loss  Not Recognized as Pension Cost			Treasury Stock			Total
	Capital Stock Issued							Retained Earnings
	Shares (Thousand)		Capital Stock					Legal Reserve		Unappropriated Earnings
2008			NT$		NT$			NT$		NT$			NT$			NT$		NT$			NT$			NT$
Balance at January 1, 2008		3,073,425		30,734,245		16,658,624			3,340,131		17,761,366			1,160,659			84,926		(37,613	)		(794,184	)		68,908,154
Appropriation for legal reserve		—		—		—			1,748,935		(1,748,935	)		—			—		—			—			—
Remuneration to directors and supervisors		—		—		—			—		(157,405	)		—			—		—			—			(157,405	)
Employees’ cash bonuses		—		—		—			—		(1,100,058	)		—			—		—			—			(1,100,058	)
Employees’ stock bonuses		47,145		471,454		—			—		(471,454	)		—			—		—			—			—
Cash dividends		—		—		—			—		(13,836,139	)		—			—		—			—			(13,836,139	)
Stock dividends		30,747		307,470		—			—		(307,470	)		—			—		—			—			—
Employee stock option exercised		1,273		12,730		(5,335	)		—		—			—			—		—			—			7,395
Long-term investment adjustment for investee company’s additional paid-in capital		—		—		5,507			—		—			—			—		—			—			5,507
Long-term investment adjustment for investee company’s cumulative translation adjustments		—		—		—			—		—			—			211,940		—			—			211,940
Unrealized loss on available-for-sale financial assets		—		—		—			—		—			(1,160,659	)		—		—			—			(1,160,659	)
Net loss not recognized as pension cost		—		—		—			—		—			—			—		(39,559	)		—			(39,559	)
Cash dividends for treasury stock held by subsidiary		—		—		161,415			—		—			—			—		—			—			161,415
Net income		—		—		—			—		6,313,530			—			—		—			—			6,313,530
Balance at December 31, 2008		3,152,590		31,525,899		16,820,211			5,089,066		6,453,435			—			296,866		(77,172	)		(794,184	)		59,314,121

The accompanying notes are an integral part of these consolidated financial statements.

(Continued)

F-7

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (CONTINUED)

(EXPRESSED IN THOUSANDS OF DOLLARS)

															Unrealized Gain  on Available-for- sale Financial Assets		Cumulative Translation Adjustments			Net Loss  Not Recognized as Pension Cost			Treasury Stock			Total
	Capital Stock Issued									Retained Earnings
	Shares (Thousand)			Capital Stock			Capital Reserve			Legal Reserve		Unappropriated Earnings
2009				NT$			NT$			NT$		NT$			NT$		NT$			NT$			NT$			NT$
Balance at January 1, 2009		3,152,590			31,525,899			16,820,211			5,089,066		6,453,435			—		296,866			(77,172	)		(794,184	)		59,314,121
Appropriation for earnings for prior years: (Note)
Legal reserve		—			—			—			631,353		(631,353	)		—		—			—			—			—
Cash dividends		—			—			—			—		(5,674,662	)		—		—			—			—			(5,674,662	)
Long-term investment adjustment for investee company’s cumulative translation adjustments		—			—			—			—		—			—		(88,289	)		—			—			(88,289	)
Unrealized gain on available-for-sale financial assets		—			—			—			—		—			767,157		—			—			—			767,157
Net loss not recognized as pension cost		—			—			—			—		—			—		—			(92,142	)		—			(92,142	)
Cash dividends for treasury stock held by subsidiary		—			—			65,212			—		—			—		—			—			—			65,212
Retirement of treasury stock		(36,229	)		(362,288	)		(431,896	)		—		—			—		—			—			794,184			—
Net income		—			—			—			—		8,789,829			—		—			—			—			8,789,829
Balance at December 31, 2009		3,116,361			31,163,611			16,453,527			5,720,419		8,937,249			767,157		208,577			(169,314	)		—			63,081,226

Note: The directors’ and supervisors’ remunerations and employees’ bonuses amounted to $56,822 thousand and $630,518 thousand, respectively, have been deducted from the statements of income.

The accompanying notes are an integral part of these consolidated financial statements.

(Continued)

F-8

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (CONTINUED)

(EXPRESSED IN THOUSANDS OF DOLLARS)

	Capital Stock Issued				Capital Reserve		Retained Earnings					Unrealized Gain on Available-for-		Cumulative Translation Adjustments			Net Loss  Not Recognized as Pension Cost			Treasury Stock		Total
	Shares (Thousand)		Capital Stock				Legal Reserve		Unappropriated Earnings			sale  Financial Assets
			NT$		NT$		NT$		NT$			NT$		NT$			NT$			NT$		NT$
2010
Balance at January 1, 2010		3,116,361		31,163,611		16,453,527		5,720,419		8,937,249			767,157		208,577			(169,314	)		—		63,081,226
Appropriation for earnings for prior years: (Note)
Legal reserve		—		—		—		878,983		(878,983	)		—		—			—			—		—
Cash dividends		—		—		—		—		(8,040,212	)		—		—			—			—		(8,040,212	)
Long-term investment adjustment for investee company’s cumulative translation adjustments		—		—		—		—		—			—		(293,841	)		—			—		(293,841	)
Unrealized gain on available-for-sale financial assets		—		—		—		—		—			1,021,355		—			—			—		1,021,355
Net loss not recognized as pension cost		—		—		—		—		—			—		—			(99,254	)		—		(99,254	)
Net income		—		—		—		—		5,626,907			—		—			—			—		5,626,907
Balance at December 31, 2010		3,116,361		31,163,611		16,453,527		6,599,402		5,644,961			1,788,512		(85,264	)		(268,568	)		—		61,296,181

Note: The directors’ and supervisors’ remunerations and employees’ bonuses amounted to $79,108 thousand and $893,357 thousand, respectively, have been deducted from the statements of income.

The accompanying notes are an integral part of these consolidated financial statements.

F-9

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(EXPRESSED IN THOUSANDS OF DOLLARS)

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
										(Note 2)
Cash flows from operating activities
Net income		6,313,530			8,789,829			5,626,907			193,099
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		8,845,225			8,448,458			8,479,361			290,987
Amortization		586,439			505,687			433,973			14,893
Provision for (reversal of) bad debts expense		271,091			79,754			(260,927	)		(8,954	)
Provision for (reversal of) sales allowance		120,153			290,109			(293,021	)		(10,056	)
Provision for (reversal of) loss on obsolescence and decline in market value of inventories		9,065			6,946			(25,222	)		(866	)
Gain on disposal of investments		—			(1,947,879	)		—			—
Gain on liquidation of investment		—			(5,871	)		—			—
Impairment loss		3,030,605			—			—			—
Long-term investment loss under the equity method		—			—			3,757			129
Gain on disposal of property, plant and equipment		(30,473	)		(8,469	)		(44,276	)		(1,519	)
Provision for loss on idle assets		43,093			73,882			117,847			4,044
Foreign currency exchange gain on long-term loans		—			—			(157,500	)		(5,405	)
Amortization of arrangement fee of co-financing loans		—			—			322			11
Amortization of discount on long-term notes		1,548			2,581			—			—
(Increase) decrease in assets:
Notes receivable		70,449			5,629			(32,721	)		(1,123	)
Accounts receivable		3,611,376			(4,389,987	)		2,163,598			74,248
Other financial assets, current		248,323			(2,706	)		(83,528	)		(2,866	)
Inventories		1,085,907			(620,639	)		(517,836	)		(17,771	)
Deferred income tax assets		(691,318	)		546,367			204,791			7,028
Other current assets – other		(66,688	)		(78,480	)		11,564			397
Increase (decrease) in liabilities:
Notes payable		(114	)		(655	)		—			—
Accounts payable		(1,618,261	)		3,121,234			(579,308	)		(19,880	)
Income tax payable		(679,778	)		27,473			(328,738	)		(11,281	)
Accrued expenses		737,548			346,707			(441,547	)		(15,153	)
Other payables		(312,998	)		273,954			106,784			3,665
Other current liabilities		20,847			33,022			(4,428	)		(152	)
Other liabilities – other		928			(797	)		(1,011	)		(35	)
Accrued pension liabilities		8,195			(3,867	)		27,677			950
Net cash provided by operating activities		21,604,692			15,492,282			14,406,518			494,390

The accompanying notes are an integral part of these consolidated financial statements.

(Continued)

F-10

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)

(EXPRESSED IN THOUSANDS OF DOLLARS)

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
										(Note 2)
Cash flows from investing activities
Increase in security deposits		(19,500	)		—			(58,100	)		(1,994	)
Decrease (increase) in financial assets carried at cost		3,559			6,642			(1,133,950	)		(38,914	)
Increase of long-term investments under equity method		—			—			(152,675	)		(5,239	)
Proceeds from liquidation of long-term investment		—			5,871			—			—
Acquisition of property, plant and equipment		(10,048,005	)		(5,303,328	)		(15,321,235	)		(525,780	)
Acquisition of leased assets		—			(87,732	)		—			—
Proceeds from disposal of assets		48,911			9,277			1,254,054			43,035
Payment for deferred charges		(540,914	)		(253,402	)		(670,475	)		(23,009	)
Receipt of (payment for) refundable deposits		479			1,754			(165	)		(6	)
Net cash used in investing activities		(10,555,470	)		(5,620,918	)		(16,082,546	)		(551,907	)
Cash flows from financing activities
Proceeds (repayment) of short-term loans		83,989			(414,024	)		1,248,592			42,848
Proceeds of long-term loans		—			—			4,525,336			155,296
Repayment of long-term loans		—			(3,000,000	)		—			—
Repayment of deposit-in		(86,331	)		(30,083	)		—			—
Proceeds from the exercise of employee stock option		7,395			—			—			—
Remuneration to directors and supervisors		(157,405	)		—			—			—
Payment for cash dividends and employees’ bonuses		(14,774,769	)		(5,609,430	)		(8,040,177	)		(275,915	)
Net cash used in financing activities		(14,927,121	)		(9,053,537	)		(2,266,249	)		(77,771	)
Effect of foreign currency exchange		94,206			(43,631	)		(153,876	)		(5,280	)
Net (decrease) increase in cash		(3,783,693	)		774,196			(4,096,153	)		(140,568	)
Cash and cash equivalents at the beginning of the year		22,624,658			18,840,965			19,615,161			673,135
Cash and cash equivalents at the end of the year		18,840,965			19,615,161			15,519,008			532,567
Supplemental disclosures of cash flow information:
Cash paid for interest		91,999			33,779			7,652			263
Deduct: capitalized interest		—			—			(292	)		(10	)
Interest paid (excluding capitalized interest)		91,999			33,779			7,360			253
Cash paid for income tax		1,575,888			851,721			884,903			30,367
Supplemental disclosures of partial cash paid for investing activities:
Acquisition of property, plant and equipment		8,974,422			6,039,790			16,920,850			580,674
Deduction on payment due to exchange of assets		—			(8,631	)		—			—
Net decrease (increase) in other payables due to acquisition of equipment		1,073,583			(727,831	)		(1,599,615	)		(54,894	)
Cash paid		10,048,005			5,303,328			15,321,235			525,780
Non-cash financing activities:
Current portion of long-term loans		749,354			—			—			—

The accompanying notes are an integral part of these consolidated financial statements.

F-11

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

1. History and Organization

(1) Siliconware Precision Industries Co., Ltd. (the “Company”) was incorporated as a company limited by shares under the Company Law of the Republic of China (R.O.C.) in May 1984 and was listed on the Taiwan Stock Exchange in April 1993. The Company is mainly engaged in the assembly, testing and turnkey services of integrated circuits. On August 31, 2009, the Company merged with its wholly owned subsidiary, Siliconware Investment Company Ltd. (SIC). The Company is the surviving entity while SIC was dissolved. As of December 31, 2010, the Company and its subsidiaries had 18,455 employees.

(2) Consolidated subsidiaries:

			% of ownership held by the named investors as of December 31,
Name of investor	Name of subsidiaries	Main operating activities	2009			2010
The Company	SPIL (B.V.I.) Holding Limited	Investment activities		100	%		100	%
SPIL (B.V.I.) Holding Limited	Siliconware USA, Inc. (SUI)	Communications and relationship maintenance with companies headquartered in North America		100	%		100	%
SPIL (B.V.I.) Holding Limited	SPIL (Cayman) Holding Limited	Investment activities		100	%		100	%
SPIL (Cayman) Holding Limited	Siliconware Technology (Suzhou) Limited	Assembly and testing services		100	%		100	%

(3) Non-consolidated subsidiaries:

None.

(4) Adjustments for subsidiaries with different accounting periods:

None.

(5) Extraordinary risks from foreign subsidiaries:

None.

(6) Material limitations for capital transfer from subsidiaries to the parent company:

None.

(7) The parent company’s stocks held by subsidiaries:

Please refer to Note 18.

(8) Convertible bonds and stocks issued by subsidiaries:

Please refer to Note 29.

2. Summary of Significant Accounting Policies

The accompanying consolidated financial statements are prepared in conformity with the “Rules Governing the Preparation of Financial Reports by Securities Issuers” and generally accepted accounting principles in the Republic of China. Accounting principles generally accepted in the Republic of China vary in certain significant respects from accounting principles generally accepted in the United States. The application of accounting principles in the United States would have affected the determination of consolidated net income expressed in New Taiwan dollars, for each of the three years ended December 31, 2010 and the determination of consolidated shareholders’ equity and consolidated financial position also expressed in New Taiwan dollars, as of December 31, 2009 and 2010 to the extent summarized in Note 31 to the consolidated financial statements.

F-12

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

The Company’s significant accounting policies are summarized as follows:

Basis of Consolidation

The Company adopted the R.O.C. Statement of Accounting Standards No. 7, “Consolidated Financial Statements”, which requires an entity to consolidate all of the subsidiaries which it owns, directly or indirectly, more than 50% of the voting rights and which it owns, directly or indirectly, less than 50% of the voting rights but has effective control. Significant inter-company transactions and balances between the Company and its subsidiaries or investees accounted for under the equity method are eliminated.

Use of Estimates

The preparation of financial statements in conformity with the aforementioned guidelines, law and principles requires management to make reasonable assumptions and estimates of matters that are inherently uncertain. Actual results may differ from those estimates.

Translation of Foreign Currency Transactions on Subsidiaries’ Financial Statements

The financial statements of foreign subsidiaries are translated into New Taiwan dollars using the spot rate as of each balance sheet date for asset and liability accounts, average exchange rate for profit and loss accounts, spot rate for dividend and historical exchange rates for equity accounts. The cumulative translation effects for subsidiaries using functional currencies other than the New Taiwan dollar are included in the “cumulative translation adjustments” in stockholders’ equity.

Foreign Currency Transactions

The Company and its subsidiaries maintain their accounts in New Taiwan dollars and their functional currencies, respectively. Transactions denominated in foreign currencies are translated into functional currencies at the exchange rates prevailing on the transaction dates. Assets and liabilities denominated in foreign currencies are translated into functional currencies at the exchange rates prevailing at the balance sheet date. Exchange gains or losses arising from the aforementioned translations are recognized in the current year’s results.

Convenience Translation into US Dollars

The Company maintains its accounting records and prepares its financial statements in New Taiwan (“NT”) dollars. The United States (“US”) dollar amounts disclosed in the 2010 financial statements are presented solely for the convenience of the reader and were translated at the rate of NT$ 29.14 (in dollars) to US$1.00 (in dollars), which was the noon buying rate as certified for customs purposes by the Federal Reserve Bank of New York on December 30, 2010 as the last quoted rate prior to the balance sheet date. Such translation amounts are unaudited and should not be construed that the NT dollar amounts represent, or have been, or could be, converted into US dollars at that or any other rate.

F-13

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Classification of Current and Noncurrent Assets / Liabilities

A. Assets that meet one of the following criteria are classified as current assets; otherwise they are classified as noncurrent assets:

(1) Assets arising from operating activities that are expected to be realized or consumed, or are intended to be sold within the normal operation cycle;

(2) Assets held mainly for trading purposes;

(3) Assets that are expected to be realized within twelve months from the balance sheet date;

(4) Cash or cash equivalents, excluding restricted cash and cash equivalents and those that are to be exchanged or used to pay off liabilities more than twelve months after the balance sheet date.

B. Liabilities that meet one of the following criteria are classified as current liabilities; otherwise they are classified as noncurrent liabilities:

(1) Liabilities arising from operating activities that are expected to be paid off within the normal operating cycle;

(2) Liabilities arising mainly from trading activities;

(3) Liabilities that are to be paid off within twelve months from the balance sheet date;

(4) Liabilities for which the repayment date cannot be extended unconditionally to more than twelve months after the balance sheet date.

Cash Equivalents

Bankers’ acceptances (BA) acquired with maturities of less than three months from the date of purchase are classified as cash equivalents. The carrying amount approximates fair value.

Accounts Receivable

Accounts receivable expected to be collected over one year are recorded at present value by using predetermined interest rate whereas those expected to be collected within one year are not reported at present value due to the fact that the difference between the maturity value and the fair value discounted by implicit interest rate is immaterial and the frequency of transactions is high.

Allowance for Doubtful Accounts

The allowance for doubtful accounts is estimated based on the evaluation of collectibility and aging analysis of notes receivable, accounts receivable and other receivable.

Allowance for Sales Discounts

The allowance for sales discounts is provided based on the estimated allowance to be incurred and is recorded as deduction of accounts receivable.

Inventories

Inventories are recorded at cost when acquired under a perpetual inventory system. Cost is determined using the weighted–average method. The allowance for loss on obsolescence and decline in market value is recorded based on inventory aging and obsolescence, when necessary. Prior to January 1, 2009, inventories were stated by category at the lower of aggregate cost or market value and total inventory approach as of the balance sheet date. Effective January 1, 2009, inventories are stated at the lower of cost or net realizable value by item, except where it may be appropriate to group similar or related items. Net realizable value is the estimated selling price in the ordinary course of business less all estimated costs of completion and necessary selling expenses.

F-14

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Noncurrent Assets Held For Sale

Non-current assets (or disposal groups) whose carrying amount will be recovered principally through a sale transaction, rather than continuing utilization, are measured at the lower of carrying amount or fair value less transaction cost.

Available-for-sale Financial Assets

A. Investments in equity securities are recorded at the transaction date.

B. Available-for-sale securities are measured at fair value at balance sheet date with changes in fair value recorded as adjustments to stockholders’ equity. The accumulated adjustments of unrealized gain or loss are realized in earnings in the period when the financial assets are disposed. Fair values of listed securities are measured at their closing price at balance sheet date.

C. The Company recognizes impairment loss whenever there is objective evidence of impairment. Subsequent recovery of such impairment loss shall be recorded as adjustments to stockholders’ equity rather than current year’s operating profit or loss.

Financial Assets Carried at Cost

A. Financial assets carried at cost are recorded at the transaction date and are initially measured at fair value plus transaction cost related to the acquisition or issuance.

B. Investments in unlisted stocks or stocks in emerging stock market, are carried at their original cost because their fair values cannot be reliably measured.

C. The Company recognizes impairment loss whenever there is objective evidence of impairment. Subsequent recovery of such impairment loss shall not be reversed.

Long-term Investments Accounted for under Equity Method

A. Long-term equity investments in which the Company owns at least 20% of the voting stocks of the investee companies are accounted for under the equity method, unless the Company cannot exercise significant influence over the investee company. The cost of an investment shall be analyzed and the cost of investment in excess of the fair value of the identifiable net assets acquired is regarded as goodwill included in the balance of equity-method investments. If the fair value of identifiable assets acquired exceeds the cost of investment, the excess shall be proportionately allocated as reductions to the fair values of noncurrent assets. No retrospective adjustment is required for amortization of the aforementioned goodwill recognized in previous years.

B. Gains or losses on sales from the Company to equity method investees are deferred in proportion to the Company’s ownership percentages in the investees as deferred credits classified as current or noncurrent liabilities. Gains or losses on sales from equity method investees to the Company are deferred in proportion to the Company’s ownership percentages in the investees until they are realized through transactions with third parties.

C. When the Company’s proportional interest in an equity investee changes after the equity investee issues new shares, the effect of change in the Company’s holding ratio on long-term investment is adjusted to capital reserve. If capital reserve account is insufficient, the effect is then charged to retained earnings.

F-15

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

D. The Company’s proportionate share of the foreign investee’s cumulative translation adjustments related to the translation of the foreign investee’s financial statements into New Taiwan dollars is recognized as “Cumulative Translation Adjustments” in stockholders’ equity.

E. The Company quarterly evaluates equity method investees for impairment due to declines in the fair value that are considered other than temporary. Such evaluations include an assessment of ability to recover the carrying amount of investment and inability of the investees to sustain an earnings capacity that would justify the carrying amount of investment. In the event of a determination that a decline in fair value is other than temporary, loss is recognized in the current year’s income.

Property, Plant and Equipment

A. Property, plant and equipment are stated at historical cost. Interest incurred relating to the construction of property, plant and equipment is capitalized accordingly.

B. Depreciation is provided on the straight-line method over the assets’ estimated economic service lives, plus an additional year as the salvage value. Salvage values of fixed assets which are still in use after reaching their estimated economic service lives are depreciated over their new estimated remaining service lives. The service lives of fixed assets are 5 to 15 years, except for buildings, which are 20 to 55 years.

C. Maintenance and repairs are expensed as incurred. Significant renewals and improvements are capitalized and depreciated accordingly. When fixed assets are disposed, their original cost and accumulated depreciation are removed from the corresponding accounts, with gain or loss recorded as non-operating income or loss.

D. Idle assets are stated at the lower of book value or net realizable value and are reclassified to other assets. Differences between book value and net realizable value are reported as losses in current earnings.

Deferred Charges

The costs of computer software system purchased externally and tooling costs are recognized as deferred charges and amortized on the straight-line basis over the useful lives of 2 to 10 years.

Land Use Right

The rental cost for Siliconware Technology (Suzhou) Limited to lease the land from the local government is recognized as land use right and amortized on the straight-line method over the contract periods of 50 to 70 years.

Pension Cost

Under a defined benefit plan, the net pension cost is computed based on the results of the actuarial report. The unrecognized net asset or net obligation at transition is amortized over 15 years on a straight-line basis. Under a defined contribution plan, the Company makes contributions to employees’ individual pension accounts during the employees’ service periods. These contributions are recorded as pension costs in the current period.

F-16

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Income Tax

A. The Company computes its income tax based on the income before tax. In accordance with R.O.C. SFAS No. 22, “Accounting for Income Taxes”, the income tax effect resulting from temporary differences and investment tax credits is recorded as deferred income tax assets or liabilities using the asset and liability method. Deferred tax assets or liabilities are further classified into current or noncurrent and carried at their net balance. Valuation allowance on deferred tax assets is provided to the extent that it is more likely than not that the tax benefit will not be realized.

B. The Company adopted R.O.C. SFAS No. 12, “Accounting for Investment Tax Credits”, in determining the investment tax credits. The investment tax credits relating to the acquisition cost of qualifying equipment or technology, qualifying research and development expenditure, qualifying personnel training expenditure and qualifying investments in significant technology companies are recognized as income tax adjustments in the period the tax credits arise.

C. Over or under provisions of prior years’ income tax liabilities are included in the current period’s income tax expense.

D. The Taiwan imputation tax system requires that any undistributed earnings in domestic consolidated entities be subject to an additional 10% corporate income tax, which is recognized as tax expense at the time when the stockholders resolve the distribution of retained earnings.

E. Pursuant to the R.O.C. Alternative Minimum Tax Act, the domestic consolidated entities are required to calculate Alternative Minimum Tax (AMT), a supplemental 10% tax on taxable income including most income that is exempted from regular income tax under various legislations, in addition to the regular tax. If the amount of alternative minimum tax is greater than that of the regular tax, the excess amount shall be reported as current tax expense.

F. When a change in tax law is enacted, the Company will recalculate deferred tax assets and liabilities accordingly. The amount of difference shall be recognized as current income tax adjustment.

Revenue and Cost

Revenues are recognized when services are provided based on transaction terms and when collectibility is reasonably assured. Related costs are recorded as incurred based on matching principle and related expenses are recognized as current expenses under accrual basis.

Employee Stock Option Plan

A. The employee stock options granted from January 1, 2004 through December 31, 2007 are accounted for in accordance with EITF 92-070, EITF 92-071 and EITF 92-072, “Accounting for Employee Stock Option” prescribed by the R.O.C. Accounting Research and Development Foundation. Compensation cost under the share-based employee compensation plan is recognized using the intrinsic value method.

B. For the grant date of the share-based payment agreements set on or after January 1, 2008, the Company shall measure the services received during the vesting period by reference to the fair value of the equity instruments granted and account for those amounts as payroll expenses during that period.

F-17

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Employees’ Bonuses and Directors’ and Supervisors’ Remunerations

Effective January 1, 2008, pursuant to R.O.C. EITF 96-052, “Accounting for Employees’ Bonuses and Directors’ and Supervisors’ Remuneration” as prescribed by the Accounting Research and Development Foundation, R.O.C., dated March 16, 2007, the Company should no longer treat such bonuses and remunerations as a reduction of retained earnings but record a cost / expense and related liability when the Company has legal obligations and could reasonably estimate such amount. Any difference between estimated amount and distributed amount resolved in the stockholders’ meeting in the subsequent year shall be adjusted in the income / loss of the following year. In addition, according to R.O.C. EITF 97-127, “Criteria for Listed Companies in Calculating the Number of Shares of Employees’ Stock Bonus”, shares of the distributed stocks will be calculated based on the closing price at the previous day of the stockholders’ meeting and after considering the effect of ex-dividend and ex-right.

Treasury Stock

A. The Company records treasury stock purchases under the cost method whereby the entire cost of the acquired stock is recorded as treasury stock and as a reduction of stockholders’ equity.

B. Upon subsequent disposal of the treasury stock, the excess of the proceeds from disposal over the book value, determined by the weighted-average method, is credited to capital reserve. However, if the book value of the treasury stock exceeds the proceeds from disposal, the excess is first charged against capital reserve arising from treasury stock and the remainder, if any, is charged against retained earnings.

C. When retiring treasury stock, the Company shall credit treasury stock and debit capital and capital reserve – additional paid-in capital. If the book value of treasury stock exceeds the aggregated amount of par value and capital reserve – additional paid-in capital, the excess is charged to capital reserve – treasury stock and to retained earnings for the remaining amount. If the book value of treasury stock is lower than the aggregated amount of par value and capital reserve – additional paid-in capital, the difference is credited to capital reserve – treasure stock in the same category.

D. The book value of treasury stock is calculated using the weighted-average method.

E. Stock of the Company held by the subsidiaries is treated as treasury stock. Subsidiaries’ gain on disposal of the Company’s stock and the cash dividend income received from the Company are recorded as additional paid-in capital – treasury stock.

Earnings Per Share

Basic earnings per share is calculated by dividing net income by the weighted average number of shares outstanding during the period. Diluted earnings per share is calculated by taking into consideration additional common shares that would have been outstanding if the equivalent diluted shares had been issued.

Impairment Loss of Non-financial Assets

A. The Company recognizes impairment loss whenever an event occurs or evidence indicates the carrying amount of an asset exceeds its recoverable amount. Recoverable amount is measured as the higher of net selling price or value in use. Net selling price is the amount obtainable from the sale of an asset in an arm’s-length transaction after deducting any direct incremental disposal costs. The value in use is the present value of estimated future cash flows expected to arise in its remained useful life.

B. An impairment loss recognized in prior years is reversed if the impairment loss caused by a specific external event of an exceptional nature is not expected to recur. However, the restored amount is limited to the amount of impairment loss previously recognized. Impairment loss for goodwill cannot be reversed.

F-18

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

3. Effects of Changes in Accounting Principle

A. Effective January 1, 2008, the Company adopted R.O.C. EITF 96-052, “Accounting for Employees’ Bonuses and Directors’ and Supervisors’ Remuneration” as prescribed by the Accounting Research and Development Foundation, R.O.C., dated March 16, 2007. As a result of the adoption of R.O.C. EITF 96-052, total expenses increased by NT$687,340, net income after tax decreased by NT$515,505, and basic earnings per share decreased by approximately NT$0.17 (in dollars) for the year ended December 31, 2008.

B. Effective January 1, 2009, the Company adopted the amendments of R.O.C. SFAS No. 10, “Accounting for Inventories”. The change in accounting principle does not cause significant impact toward the consolidated financial statements for the year ended December 31, 2009.

4. Cash and Cash Equivalents

	December 31,
	2009		2010
	NT$		NT$
Cash on hand and petty cash		1,918		1,405
Cash equivalents		23,187		2,648
Savings accounts and checking accounts		1,752,314		1,752,934
Time deposits		17,837,742		13,762,021
		19,615,161		15,519,008

As of December 31, 2009 and 2010, the interest rates for time deposits ranged from 0.11% to 2.69 % and from 0.17% to 2.20 %, respectively.

5. Accounts Receivable, Net

	December 31,
	2009			2010
	NT$			NT$
Accounts receivable		12,078,003			9,868,210
Less: Allowance for sales discounts		(446,049	)		(152,672	)
Allowance for doubtful accounts		(332,536	)		(66,928	)
		11,299,418			9,648,610

F-19

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

6. Inventories

	December 31,
	2009			2010
	NT$			NT$
Raw materials and supplies		2,392,684			2,788,794
Work in process		455,406			467,190
Finished goods		226,672			317,039
		3,074,762			3,573,023
Less: Allowance for loss on obsolescence and decline in market value of inventories		(82,431	)		(57,126	)
		2,992,331			3,515,897

The above allowance for loss on obsolescence and decline in market value of inventories was caused by the valuation of raw materials and supplies.

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Expense / loss incurred related to inventories:
Cost of goods sold		49,456,149			47,904,790			54,169,560
Decline in market value and loss on obsolescence		8,823			6,946			—
Gain from recovery of market value		—			—			(25,222	)
Others		(11,471	)		(59,964	)		(103,074	)
		49,453,501			47,851,772			54,041,264

7. Available-for-sale Financial Assets, Noncurrent

	December 31,
	2009			2010
	NT$			NT$
Cost of listed securities		5,167,332			5,167,332
Valuation adjustment		802,434			1,863,648
Accumulated impairment loss		(2,143,973	)		(2,143,973	)
		3,825,793			4,887,007

Phoenix Precision Technology Corporation (PPT), an investee of the Company, merged with Unimicron Technology Corporation (Unimicron) on December 1, 2009. Unimicron is the surviving entity while PPT was dissolved. One PPT’s common share was converted to 0.628 shares of Unimicron’s common share. The shares of PPT held by the Company were converted to Unimicron’s common shares. The Company owns 4.94% of Unimicron’s common shares and recognized gains on disposal of investment of NT$1,947,879 from the above merger.

F-20

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

8. Financial Assets Carried at Cost, Noncurrent

	December 31,
	2009			2010
	NT$			NT$
Unlisted securities		708,854			1,842,803
Accumulated impairment loss		(393,460	)		(393,460	)
		315,394			1,449,343

A. There are no reliable quoted prices for unlisted securities. Therefore, these investments are measured at cost.

B. The Company’s Board of Directors resolved to purchase 133,000 thousand common shares of ChipMOS Technologies Inc. (ChipMOS Taiwan), a 100% owned subsidiary of ChipMOS Technologies (Bermuda) Ltd. (ChipMOS Bermuda). The purchase of 133,000 shares of ChipMOS Taiwan represents approximate 15.77% of the ownership of ChipMOS Taiwan. Consideration of the share purchase totaled $1,630,580, which is determined based on the valuation report provided by Horizon Securities Ltd. as well as mutual agreement between the Company and ChipMOS Bermuda. Both parties signed the share purchase / sales agreements on February 26, 2010. As of December 31, 2010, the Company has obtained the above shares and paid $1,140,580, accordingly.

9. Long-term Investments Accounted for Under The Equity Method

	December 31,
	2009				2010
Investee company	Amount		Percentage of ownership		Amount		Percentage of ownership
	NT$				NT$
Vertical Circuits, Inc.		—		—		148,918		30.69	%

A. To upgrade assembly related technology, the Company purchased preferred-stock ownership of Vertical Circuits, Inc. (VCI) amounted to US$ 5,000 in December 2010, and obtained 30.69% of the voting right on VCI.

B. For the year ended December 31, 2010, the Company recognized investment loss of $3,757, for investee accounted for under the equity method based on investee’s audited financial statements for the same period by weighted-average percentage of stock ownership.

F-21

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

10. Property, Plant and Equipment

	December 31, 2009
	Cost		Accumulated depreciation			Book value
	NT$		NT$			NT$
Land		2,903,192		—			2,903,192
Buildings		13,108,575		(3,837,362	)		9,271,213
Machinery and equipment		53,002,069		(31,781,058	)		21,221,011
Utility equipment		1,117,124		(554,471	)		562,653
Furniture and fixtures		722,071		(452,793	)		269,278
Other equipment		2,189,994		(1,283,615	)		906,379
Construction in progress and prepayments for equipment		1,182,399		—			1,182,399
		74,225,424		(37,909,299	)		36,316,125
	December 31, 2010
	Cost		Accumulated depreciation			Book value
	NT$		NT$			NT$
Land		2,903,192		—			2,903,192
Buildings		15,140,684		(4,606,516	)		10,534,168
Machinery and equipment		52,257,238		(29,044,684	)		23,212,554
Utility equipment		1,167,108		(602,642	)		564,466
Furniture and fixtures		940,263		(533,370	)		406,893
Other equipment		2,432,287		(1,253,312	)		1,178,975
Construction in progress and prepayments for equipment		4,126,547		—			4,126,547
		78,967,319		(36,040,524	)		42,926,795

A. Capitalized interest expense for the years ended December 31, 2009 and 2010:

	2009		2010
	NT$		NT$
Total interest expense including capitalized interest		36,850		11,753
Capitalized interest (included in property, plant and equipment)		—		(292	)
Interest expense		36,850		11,461
Interest capitalization rate		—		0.8911	%

B. On February 26, 2010, the Company’s Board of Directors resolved to sell certain equipments to ChipMOS Taiwan. Proceeds of the transaction totaled $1,630,580, which is determined based on the appraisal report issued by China Credit Information Service, Ltd. as well as mutual agreement between the Company and ChipMOS Taiwan. Both parties signed the equipment purchase / sales agreement on February 26, 2010. As of December 31, 2010, the Company has delivered the equipment and received proceeds amounted to $1,140,580, and recognized gain on disposal of assets of $3,608. The uncollected proceeds amounted to $490,000 (shown as other financial assets – current).

F-22

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

11. Short-term Loans

	December 31,
Nature of loans	2009			2010
	NT$			NT$
Credit loans		225,488			1,461,281
Interest rates		1.2445	%		0.95%~0.96	%

12. Other Payables

	December 31,
	2009		2010
	NT$		NT$
Payables for equipment		1,370,759		2,970,374
Other payables		882,545		984,450
		2,253,304		3,954,824

13. Long-term Loans

			December 31,
Financial institution	Line of credits	Loan period and repayment method	2009		2010
			NT$		NT$
Mega International Commercial Bank (The management bank of co-financing loans)	NT$ 5 billion and US$ 0.15 billion	October 29, 2010 ~ October 29, 2015 Repayable in 6 semi-annual installments starting from April 2013		—		4,377,000
Less: Amortization of arrangement fee of long-term co-financing loans				—		(8,842	)
				—		4,368,158
Available credit line				—		5,000,000
Interest rates				—		0.8911	%

A. In order to fulfill operational and capital expenditure needs, the Company has entered into a co-financing-loan agreement in October 2010 with eleven financial institutions, including Mega International Commercial Bank, the management bank. The lines of credit consisted of credit amount of NT$ 5 billion and US$ 0.15 billion with credit period of five years. The interest expense is calculated based on floating interest rates.

B. Pursuant to the above loan agreement, the Company should maintain certain financial covenants, such as current ratio, debt ratio as well as the interest coverage ratio, calculated based on both semi-annual and annual audited financial statements. As of December 31, 2010, the Company was in compliance with all of the loan covenants.

F-23

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

14. Pension Plan and Net Periodic Pension Cost

A. In accordance with the Labor Standards Act, the Company has a funded defined benefit pension plan covering all eligible employees prior to the enforcement of the Labor Pension Act (“the Act”), effective on July 1, 2005 and employees choosing to continue to be subject to the pension mechanism under the Labor Standards Law after the enforcement of the Act. Under the funding policy of the plan, the Company contributes monthly an amount equal to 2% of the employees’ monthly salaries and wages to the pension fund deposited with the Bank of Taiwan, the custodian, which acquired the Central Trust of China on July 1, 2007. Pension benefits are generally based on service years and six-month average wages and salaries before retirement of the employee. Two units are earned per year for the first 15 years of service and one unit is earned for each additional year of service with a maximum of 45 units.

B. In accordance with the Labor Pension Act, effective July 1, 2005, the Company has a defined contribution pension plan covering employees (excluding foreign employees) who chose to be subject to the pension mechanism under this Act. The Company makes monthly contributions to the employees’ individual pension accounts on a basis no less than 6% of each employee’s monthly salary or wage. The principal and accrued dividends from an employee’s personal pension account are claimed monthly or in full at one time. Under this pension plan, net pension costs amounted to NT$312,441, NT$272,177 and NT$356,469 for the years ended December 31, 2008, 2009, and 2010, respectively.

C. Siliconware USA, Inc. has established a 401(K) pension plan (“the Plan”) covering substantially all employees. The Plan provides voluntary salary reduction contributions by eligible participants in accordance with Section 401(K) of the Internal Revenue Code, as well as discretionary matching contributions determined annually by its Board of Directors from Siliconware USA, Inc. to its employees’ individual pension accounts. Contributions made in accordance with the Plan amounted NT$8,812, NT$8,782, and NT$8,195, respectively, for the years ended December 31, 2008, 2009 and 2010.

D. Siliconware Technology (Suzhou) Limited contributes monthly an amount equal to certain percentage of employees’ monthly salaries and wages according to the specific legal requirements in Suzhou to the Bureau of Social Insurance without bearing other obligations. The contributions are recorded as pension expense.

E. The following tables set forth the actuarial assumptions, funded status and amounts recognized for the Company’s defined benefit pension plan pursuant to R.O.C. SFAS No. 18:

(1) Assumptions used in actuarial calculations for the years ended December 31, 2008, 2009 and 2010:

	For the years ended December 31,
	2008			2009			2010
Discount rate		2.20	%		2.25	%		2.00	%
Long-term rate of compensation increase		1.00	%		2.00	%		2.00	%
Expected rate of return on plan assets		2.50	%		2.00	%		2.50	%

	December 31,
	2009			2010
	NT$			NT$
Vested benefit		(77,782	)		(155,412	)
Vested benefit obligation		(68,100	)		(135,300	)
Accumulated benefit obligation		(1,365,669	)		(1,524,750	)

F-24

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(2) Changes in benefit obligation for the years ended December 31, 2008, 2009 and 2010:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Projected benefit obligation at the beginning of the year		(1,620,782	)		(1,544,731	)		(1,922,596	)
Service cost		(36,001	)		(29,786	)		(33,034	)
Interest cost		(45,252	)		(34,630	)		(43,083	)
Plan amendments		59,238			(73,596	)		—
Gain (loss) on projected benefit obligation		77,386			(284,261	)		(154,768	)
Benefit paid		20,680			44,408			33,457
Projected benefit obligation at the end of the year		(1,544,731	)		(1,922,596	)		(2,120,024	)

(3) Changes in plan assets for the years ended December 31, 2008, 2009 and 2010:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Fair value of plan assets at the beginning of the year		1,059,039			1,130,537			1,143,276
Actual return on plan assets		38,553			7,487			16,981
Employer contributions		53,625			49,660			49,676
Benefits paid		(20,680	)		(44,408	)		(33,457	)
Fair value of plan assets at the end of the year		1,130,537			1,143,276			1,176,476

(4) Funded status on December 31, 2009 and 2010:

	December 31,
	2009			2010
	NT$			NT$
Fair value of plan assets		1,143,276			1,176,476
Projected benefit obligation		(1,922,596	)		(2,120,024	)
Funded status		(779,320	)		(943,548	)
Unrecognized net transition assets		(912	)		—
Prior service cost		15,312			14,262
Unrecognized net actuarial loss		727,153			863,842
Additional pension liability		(184,626	)		(282,830	)
Accured pension liability		(222,393	)		(348,274	)

F-25

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(5) Components of net periodic cost for the years ended December 31, 2008, 2009 and 2010:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Service cost		36,001			29,786			33,034
Interest cost		45,252			34,630			43,083
Expected return on plan assets		(32,470	)		(28,862	)		(23,215	)
Amortization of unrecognized net transition assets		(913	)		(913	)		(912	)
Amortization of prior service cost		(1,424	)		470			1,050
Amortization of unrecognized loss		15,374			10,682			24,313
Net periodic pension cost		61,820			45,793			77,353

15. Capital Stock

A. As of December 31, 2010, the authorized capital of the Company was NT$36,000,000, represented by 3,600,000,000 common shares with par value of NT$10 (in dollars) per share. As of December 31, 2010, the paid-in capital was NT$31,163,611.

B. On August 31, 2009, the Company merged with SIC and retired 36,229 thousand shares of the Company’s shares held by SIC. The capital reduction was approved by the Ministry of Economic Affairs on September 18, 2009.

C. The Company issued NT$1,500,000 American Depositary Shares (“ADSs”), represented by 30,000,000 units of ADSs, in June 2000. Each ADS represents five shares of common stock of the Company with an offering price of US$8.49 (in dollars) per ADS. As of December 31, 2010, the outstanding ADSs amounted to 124,828,695 units. Major terms and conditions of the ADSs are summarized as follows:

(1) Voting Rights

ADS holders will have no rights to vote directly in shareholders’ meetings with respect to the Deposited Shares. The Depositary shall provide voting instruction to the Chairman of the Company and vote on behalf of the Deposited shares evidenced by ADSs. If the Depositary receives voting instructions from holders of at least 51% of the outstanding ADSs to vote in the same direction on a resolution, the Depositary will vote in the manner as instructed.

(2) Distribution of Dividends

ADS holders are deemed to have the same rights as holders of common shares with respect to the distribution of dividends.

F-26

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

D. The exercise price of the employee stock option was decided according to the closing price at the measurement date and is subject to adjustment for distribution of cash dividend or changes in capital stock in accordance with certain formula. The granted employee stock options will expire in five years and will be graded vested after two years of service in accordance with the employee stock option plan.

For the years ended December 31, 2008, 2009 and 2010, details of the employee stock options granted, exercised and canceled and exercise price of the employee stock options are as follows: (Numbers of options are presented in thousands)

	Number of options			Weighted average exercise price (in dollars)
				NT$
Outstanding options at January 1, 2008		1,514			5.83
Exercised		(1,273	)		5.81
Forfeited / cancelled		(241	)		5.97
Outstanding options at December 31, 2008		—			—
Outstanding options at December 31, 2009		—			—
Outstanding options at December 31, 2010		—			—

16. Capital Reserve

A. According to the Company Law of the R.O.C., the capital reserve arising from paid-in capital in excess of par on the issuance of stocks, from merger, from the conversion of convertible bonds and from donation shall be exclusively used to cover accumulated deficits or transferred to capital. Other capital reserve shall be exclusively used to cover accumulated deficits. The amount of capital reserve used to increase capital is limited to 10% of the common stock each year when the Company has no accumulated deficits. The capital reserve can only be used to cover accumulated deficits when the legal reserve is insufficient to cover the deficits.

B. According to the Company Law of the R.O.C., the capital reserve is allowed to be transferred to capital one year after the registration of capitalization is approved.

17. Retained Earnings

A. According to the Company’s Articles of Incorporation, current year’s earnings before tax, if any, shall be distributed in the following order:

(1) Pay all taxes and duties;

(2) Offset prior years’ operating losses, if any;

(3) Set aside 10% of the remaining amount after deducting (1) and (2) as legal reserve;

(4) Set aside no more than 1% of the remaining amount after deducting items (1), (2) and (3) as directors’ and supervisors’ remunerations.

(5) After items (1), (2), (3) and (4) were deducted, 10% of the remaining amount may be allocated as employee bonus and 90% as stockholders’ dividend. The distributed amount is subject to the resolution adopted by the Board of Directors and approved at the stockholders’ meeting.

F-27

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

B. Among the total dividend distributed, at least 50% of which is distributed as cash dividend and the rest is stock dividend. The appropriation of the profit is subject to the resolution adopted by the Board and approval by the stockholders. As of April 26, 2011, the Board of Directors of the Company has resolved the distribution of the 2010 earnings. The resolved distributed amount of cash dividends is NT$1.62 (in dollars) per share. Any information in relation to the appropriation of the Company’s 2010 earnings will be posted in the “Market Observation Post System” at the website of the Taiwan Stock Exchanges after the Board’s resolution and the stockholders’ approval.

C. Legal reserve can only be used to offset deficits or increase capital. The legal reserve can be used to increase capital when and only when the reserve balance exceeds 50% of the capital stock, and the amount capitalized should be limited to 50% of the legal reserve.

D. In accordance with the R.O.C. Securities and Future Bureau (SFB) regulation, in addition to legal reserve and prior to distribution of earnings, the Company should set aside a special reserve in an amount equal to the net change in the reduction of prior year’s stockholders’ equity, resulting from adjustments, such as cumulative foreign currency translation adjustment and unrealized loss on available-for-sale financial assets. Such special reserve is not available for dividend distribution. In the subsequent year (s), if the year-end balances of the cumulative foreign currency translation adjustment and unrealized losses on available-for-sale financial assets no longer result in a net reduction in the stockholders’ equity, the special reserve previously set aside will then be available for distribution.

E. The Taiwan imputation tax system requires that any undistributed current earnings of a company derived on or after January 1, 1998 be subject to an additional 10% corporate income tax if the earnings are not distributed in the following year. As of December 31, 2010, the undistributed earnings derived on or after January 1, 1998 was NT$5,644,961.

F. As of December 31, 2010, the balance of stockholders’ imputation tax credit account of the Company was NT$14,431. The rate of stockholders’ imputation tax credit to undistributed earnings for the earnings distributed in 2010 is 9.85%. The rate of stockholders’ imputation tax credit to undistributed earnings for the earnings distributed in the following year is approximately 8.94%. However, the rate is subject to changes based on the balance of stockholders’ imputation tax credit account, the undistributed earnings, and other tax credit amount in accordance with the R.O.C. tax law at the dividend allocation date.

G. The distributions of 2007, 2008 and 2009 dividends had been resolved at the stockholders’ meetings on June 13, 2008, June 10, 2009 and June 15, 2010, respectively. Details are summarized below:

	2007				2008				2009
	Amount		Dividends per share (in NT dollars)		Amount		Dividends per share (in NT dollars)		Amount		Dividends per share (in NT dollars)
	NT$				NT$				NT$
Stock dividends		307,470		0.10		—		—		—		—
Cash dividends		13,836,139		4.50		5,674,662		1.80		8,040,212		2.58
		14,143,609		4.60		5,674,662		1.80		8,040,212		2.58

At the stockholders’ meeting on June 15, 2010, the Company’s stockholders also resolved to distribute NT$893,357 cash as employees’ bonuses and NT$79,108 as directors’ and supervisors’ remunerations, respectively. The distributed amount is the same as the estimated amount accrued in 2009. Any information in relation to the Company’s earnings of distribution after the stockholders’ approval will be posted in the “Market Observation Post System” at the website of the Taiwan Stock Exchanges.

H. According to the Articles of Incorporation of the Company, for the years ended December 31, 2009 and 2010, the Company accrued NT$893,357 and NT$560,945 as employees’ bonuses and NT$79,108 and NT$50,642 as directors’ and supervisors’ remuneration, respectively, which were accrued based on 10% and 1% of net income after considering the required capital reserve.

F-28

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

18. Treasury Stock

As of December 31, 2008, SIC, the subsidiary of the Company, held 36,229 thousand shares of the Company’s stock, with book value of NT$21.92 (in dollars) per share. The closing price of the Company’s stock was NT$28 (in dollars) per share on December 31, 2008. SIC was merged into the Company on August 31, 2009 and all 36,229 thousand shares of the Company’s stock held by SIC were retired for capital reduction.

19. Impairment of Long-term Investments

	Impairment loss on long-term investments
	For the years ended December 31,
	2008		2009		2010
	NT$		NT$		NT$		��
Recognized in income statement		3,030,605		—		—

Under the impact of global financial crisis, the Company performed evaluation of impairment toward its investments of equity securities and recognized other-than-temporary impairment loss of NT$2,637,145 for the year ended December 31, 2008. In addition, Siliconware Investment Company Ltd., subsidiary of the Company, recognized a total amount of impairment loss of NT$393,460 based on the proportional interests on these financial assets for the year ended December 31, 2008.

20. Income Tax

The Company and its subsidiaries file separate income tax returns. Reconciliation between the income tax calculated on pre-tax financial statement income based on the statutory tax rate and the income tax expense is as follows:

	As of end for the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Income tax expense calculated at the statutory tax rate		1,578,720			2,556,486			1,141,154
Tax exempt income and other permanent differences		(566,347	)		(860,778	)		(287,344	)
Investment tax credits		(863,441	)		(355,923	)		(270,691	)
Changes in allowance for deferred income tax assets		63,330			(74,349	)		(32,076	)
Adjustment for deferred tax assets due to change of statutory tax rate		—			134,747			80,848
(Over) under provision from prior years		(1,739	)		22,375			8,387
Alternative minimum tax		—			—			122,595
Additional 10% tax on undistributed earnings		—			751			—
Income tax expense		210,523			1,423,309			762,873
Adjustments:
Net change of deferred income tax assets		690,683			(581,645	)		(244,650	)
Directly debit shareholders’ equity		—			35,277			39,859
Increase in income tax payable		(33,987	)		(14,168	)		(4,549	)
Prepaid and withholding tax		(52,796	)		(13,601	)		(32,920	)
Subsidiary’s tax refund receivable (shown as other financial assets, current)		7,455			179			—
Income tax payable		821,878			849,351			520,613
Income tax payable carried over from prior year		—			7,270			6,782

F-29

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

A. For the years ended December 31, 2008, 2009 and 2010, significant portion of the permanent differences were derived from the revenue from assembly of certain integrated circuit products exempted from income tax and the income tax exemption of capital gain from domestic security transactions.

B. The details of deferred income tax assets and liabilities arising from temporary differences, investment tax credits and loss carryforwards as of December 31, 2009 and 2010 were as follows:

	December 31,
	2009						2010
	Amount			Tax effect			Amount			Tax effect
	NT$			NT$			NT$			NT$
Current :
Temporary differences
Unrealized loss on obsolescence and decline in market value of inventories		135,368			27,074			97,762			16,619
Unrealized sales allowance		441,212			88,242			146,569			24,917
Unrealized foreign currency exchange loss (gain)		1,655			331			(58,841	)		(10,003	)
Allowance for (reversal of) doubtful accounts		218,944			43,789			(21,261	)		(3,614	)
Others		4,871			974			5,218			887
Investment tax credits					639,000						559,268
					799,410						588,074
Noncurrent :
Temporary difference
Impairment loss		2,273,476			454,695			2,218,381			377,125
Depreciation expense		(545,356	)		(109,071	)		(159,311	)		(27,083	)
Unrealized gain arising from valuation for financial assets		(176,384	)		(35,277	)		(441,977	)		(75,136	)
Deferred asset - intercompany profit		51,946			10,389			48,646			8,270
Unrealized loss on idle assets		247,196			49,439			212,869			36,187
Others		5,268			1,055			5,642			959
Loss carryforwards		109,850			12,083			—			—
Investment tax credits					882,586						854,670
					1,265,899						1,174,992
Valuation allowance for deferred income tax assets					(159,694	)					(102,283	)
					1,106,205						1,072,709

Valuation allowance for deferred income tax assets relates primarily to unrealized loss of holding foreign long-term investments and allowance for investment tax credits from qualifying research and development expenditure and loss carryforwards.

C. The income tax returns of the Company have been assessed and approved by the Tax Authority through 2007.

D. SIC’s income tax returns have been assessed and approved by the Tax Authority through 2009.

E. According to the amended Enterprise Income Tax Law of the Peoples Republic of China, effective January 1, 2008, Siliconware Technology (Suzhou) Limited that is eligible for five-year tax holiday would be qualified for a five-year transition period to move up its tax rate to 25%. The annual tax rates are gradually adjusted from 2008 to 2012 at 18%, 20%, 22%, 24% and 25%, respectively. From January 1, 2008, two-year tax exemption and subsequent three-year 50% reduction of applicable tax rate are effective. In 2010, the first profitable year of operation, the aggregate tax benefit of such tax benefit was NT$51,841, which is approximately NT$0.016 (in dollars) per share.

F-30

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

F. According to theIndustrial Innovation Actissued on May 12, 2010, the deductible rate of investment tax credit for qualifying research and development expenditures was reduced from 30% to 15% starting January 1, 2010. As of December 31, 2010, the Company’s unused portion of investment tax credits, under the “Statue for Upgrading Industries”, were as follow:

Nature of investment tax credit	Deductible amount		Unused amount		Expiration years
	NT$		NT$
Acquisition cost of qualifying machinery and equipment		1,190,882		945,283		2011 to 2014
Qualifying research and development expenditure		597,558		468,655		2012 to 2013
		1,788,440		1,413,938

G. The Company has met the requirement of “Incentives for Emerging Important Strategic Industries in Manufacturing and Technology Services” for its capitalization plans in 2004, 2005 and 2006 and is exempted from income tax for revenues arising from the assembly and testing of certain integrated circuit products for a five-year periods from 2006 and 2008, respectively. The five-year income tax exemptions will expire in December 2010, December 2012 and May 2013, respectively. Also, the Industrial Development Bureau of Ministry of Economic Affairs has issued permission for the five-year income tax exemption of the Company’s 2007 registered capitalization plan in 2008.

21. Earnings Per Share

	For the year ended December 31, 2008
	Income				Weighted average outstanding common stock		Earnings per share
	Before tax		After tax				Before tax		After tax
	NT$		NT$		(in thousand)		(in NT dollars)
					(Note)
Basic earnings per share
Net income		6,524,053		6,313,530		3,115,321		2.09		2.03
Dilutive effect of employee bonuses		—		—		24,125
Dilutive effect of employee stock option		—		—		13
Diluted earnings per share		6,524,053		6,313,530		3,139,459		2.08		2.01

Note: Company’s common stocks held by SIC are deducted during the calculation of weighted average outstanding common stock.

F-31

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

	For the year ended December 31, 2009
	Income				Weighted average outstanding common stock		Earnings per share
	Before tax		After tax				Before tax		After tax
	NT$		NT$		(in thousand)		(in NT dollars)
Basic earnings per share
Net income		10,213,138		8,789,829		3,116,361		3.28		2.82
Dilutive effect of employee bonuses		—		—		21,912
Diluted earnings per share		10,213,138		8,789,829		3,138,273		3.25		2.80
	For the year ended December 31, 2010
	Income				Weighted average outstanding common stock		Earnings per share
	Before tax		After tax				Before tax		After tax
	NT$		NT$		(in thousand)		(in NT dollars)
Basic earnings per share
Net income		6,389,780		5,626,907		3,116,361		2.05		1.81
Dilutive effect of employee bonuses		—		—		16,901
Diluted earnings per share		6,389,780		5,626,907		3,133,262		2.04		1.80

Effective January 1, 2008, as employees’ bonus could be distributed in the form of stock, the diluted EPS computation shall include those estimated shares that would be increased from employees’ stock bonus issuance in the weighted-average number of common shares outstanding during the reporting year, which taking into account the dilutive effects of stock bonus on potential common shares; whereas, basic EPS shall be calculated based on the weighted-average number of common shares outstanding during the reporting year that include the shares of employees’ stock bonus for the appropriation of prior year earnings, which have already been resolved at the stockholders’ meeting held in the reporting year. Since capitalization of employees’ bonus no longer belongs to distribution of stock dividends (or retained earnings and capital reserve capitalized), the calculation of basic EPS and diluted EPS for all periods presented shall not be adjusted retroactively.

F-32

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

22. Personnel Costs, Depreciation and Amortization

	For the year ended December 31, 2008
	Operating costs		Operating expenses		Total
	NT$		NT$		NT$
Personnel Cost
Payroll		6,586,012		1,766,164		8,352,176
Labor and health insurance		495,590		109,989		605,579
Pension expense		309,474		73,599		383,073
Other		547,882		124,923		672,805
		7,938,958		2,074,675		10,013,633
Depreciation		8,632,102		213,123		8,845,225
Amortization		478,892		104,733		583,625
	For the year ended December 31, 2009
	Operating costs		Operating expenses		Total
	NT$		NT$		NT$
Personnel Cost
Payroll		6,357,938		1,583,168		7,941,106
Labor and health insurance		439,657		106,281		545,938
Pension expense		258,825		67,927		326,752
Other		528,544		166,604		695,148
		7,584,964		1,923,980		9,508,944
Depreciation		8,266,502		181,956		8,448,458
Amortization		403,365		91,326		494,691
	For the year ended December 31, 2010
	Operating costs		Operating expenses		Total
	NT$		NT$		NT$
Personnel Cost
Payroll		7,543,043		1,804,289		9,347,332
Labor and health insurance		600,116		130,295		730,411
Pension expense		353,285		88,732		442,017
Other		582,912		131,580		714,492
		9,079,356		2,154,896		11,234,252
Depreciation		8,166,168		313,193		8,479,361
Amortization		323,086		98,604		421,690

F-33

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

23. Related Party Transactions

A. Name and Relationship with Related Parties:

Name of related parties	Relationship with the Company
Phoenix Precision Technology Corporation (PPT)	The Company holds directorship (Note 1)
Vertical Circuits, Inc.	Investee company accounted for under equity method (Note 2)

Note 1: PPT merged with Unimicron on December 1, 2009 and PPT is the dissolved entity. Therefore, the named company ceased to be a related party of the Company commencing December 1, 2009.

Note 2: The Company obtained the ownership of VCI on December 1, 2010, and therefore, it becomes a related party of the Company on the same day. The annual disclosure of related party transactions has merely disclosed for the year ended December 31, 2010.

B. Significant Transactions with Related Parties:

(1) Sales

	For the years ended December 31,
	2008				2009				2010
	Amount		% of net sale		Amount		% of net sale		Amount		% of net sale
	NT$				NT$				NT$
Vertical Circuits, Inc.		—		—		—		—		2,989		—

The sales price and payment terms provided to related party were generally comparable to those provided to non-related parties.

(2) Purchases

	For the years ended December 31,
	2008				2009				2010
	Amount		% of net purchase		Amount		% of net purchase		Amount		% of net purchase
	NT$				NT$				NT$
Phoenix Precision Technology Corporation		2,093,426		8		2,084,971		7		—		—

F-34

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

The purchase prices provided by Phoenix Precision Technology Corporation were generally comparable to those provided by non-related parties.

(3) Accounts receivable

	As of December 31,
	2009				2010
	Amount		% of account receivables		Amount		% of account receivables
	NT$				NT$
Vertical Circuits, Inc.		—		—		415		—

(4) Other Expenses / Other Payables

As of and for the years ended December 31,

2008

2009

2010

Other expenses

Other payables

Other expenses

Other payables

Other expenses

Other payables

NT$

NT$

NT$

NT$

NT$

NT$

Phoenix Precision Technology Corporation

12,284

1,733

7,201

—

—

—

The purchase prices and payment terms provided by related parties were generally comparable to those provided by non-related parties.

(5) New Product Development Expense / Deferred Charges

As of and for the years ended December 31,

2008

2009

2010

New product development expense

Deferred charges

New product development expense

Deferred charges

New product development expense

Deferred charges

NT$

NT$

NT$

NT$

NT$

NT$

Vertical Circuits, Inc.

—

—

—

—

3,494

11,920

F-35

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(6) Salaries / Remunerations Paid to Directors, Supervisors, and Managements

	For the years ended December 31,
	2008		2009		2010
	NT$		NT$		NT$
Salary		53,917		54,394		58,637
Remuneration / compensation		14,178		35,333		55,564
Operating expenses		474		506		1,039
Earnings distribution		137,475		145,620		105,194
		206,044		235,853		220,434

i. Salary includes base salary, job allowance, retirement pension and etc.

ii. Compensation includes various kinds of bonuses, other financial incentives and etc.

iii. Operating expenses include transportation fare, dormitory and other kinds of practical subsidies.

iv. Earnings distribution means directors’ and supervisors’ remunerations and employees’ bonuses recognized for the current period.

v. Please refer to the Company’s annual report to stockholders for other related information.

24. Assets Pledged as Collaterals

As of December 31, 2009 and 2010 the following assets have been pledged as collaterals against certain obligations of the Company:

	December 31,
Assets	2009		2010		Subject of collateral
	NT$		NT$
Time deposits (shown as other financial assets, current)		278,600		336,700	Guarantees for custom duties and leasing land

25. Commitments and Contingencies

A. As of December 31, 2010, the Company and its subsidiaries issued but unused letters of credit for imported machinery and equipment is approximately NT$241,602.

B. For the needs of its future operations, the Company and its subsidiaries entered into several purchase agreements amounting to NT$2,354,990, of which NT$1,186,204 remained unpaid as of December 31, 2010.

C. The Company entered into several contracts with five foreign companies for the use of certain technologies and patents. The Company agreed to pay royalty fees based on the total number of certain products sold. Contracts are valid through March 2012, May 2014, December 2015 and May 2018, until all patents included in the contracts expire and until both parties agree to terminate the contracts, respectively.

F-36

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

D. On March 1, 2006, the Company was informed of a lawsuit, or the California Litigation, brought by Tessera Inc., or Tessera, in the United States District Court for the Northern District of California against the Company, its subsidiary Siliconware U.S.A., Inc. and other semiconductor companies. Tessera alleges that some of our packaging services infringe patents owned by Tessera and that the Company has breached license agreements with Tessera. In May 2007, the parties stipulated a stay pending a final determination of an investigation directed against other parties (including certain co-defendants in the California Litigation) conducted by the U.S. International Trade Commission, or the ITC. Pursuant to the stipulation, the court has stayed the litigation. In February 2007, the Company filed requests for reexamination of five patents with the U.S. Patent and Trademark Office, or the USPTO, four of which being asserted by Tessera against the Company in the California Litigation. The USPTO has rejected part of the asserted patent claims on the grounds that each claim is invalid in view of certain prior art, and part of the asserted patent claims are confirmed by PTO. Tessera has appealed some of these decisions to the Board of Patent Appeals and Interferences.

Because litigation is inherently unpredictable, the Company is unable to accurately predict the ultimate outcome.

E. On February 26, 2010, the Company’s Board of Directors resolved to sell certain equipment to ChipMOS Taiwan. Proceeds of the transaction totaled NT$1,630,580, which is determined based on the appraisal report issued by China Credit Information Service, Ltd. as well as mutual agreement between the Company and ChipMOS Taiwan. Both parties signed the equipment purchase / sales agreement on the same day. Under the terms of the equipment purchase / sales agreement, the Company commits not to build up capacity for DRAM testing and LCD driver assembling and testing services within five years from February 26, 2010. As of December 31, 2010, the Company has delivered the equipment and received proceeds amounted to NT$1,140,580.

On February 26, 2010, the Company’s Board of Directors also resolved to purchase 133,000 thousand common shares of ChipMOS Taiwan from ChipMOS Bermuda. ChipMOS Taiwan is a 100% owned subsidiary of ChipMOS Bermuda. Consideration of the share purchase totaled NT$1,630,580, which is determined based on the valuation report provided by Horizon Securities Ltd. as well as mutual agreement between the Company and ChipMOS Bermuda. Both parties signed the share purchase / sales agreements on February 26, 2010. As of December 31, 2010, the Company has obtained 99,750 thousand shares of the above shares of ChipMOS Taiwan and paid NT$1,140,580 accordingly.

26. Significant Disaster Loss

None.

27. Significant Subsequent Event

A. On January 4, 2011, the Company received NT$490,000 payment from ChipMOS Taiwan as proceeds of selling the equipment.

B. On January 7, 2011, the Company obtained certain shares of ChipMOS Taiwan from ChipMOS Bermuda and paid the remaining consideration of NT$490,000. As of January 26, 2011, the Company has acquired the agreed equity interest in ChipMOS Taiwan, which is 15.77% of the outstanding shares of ChipMOS Taiwan.

F-37

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

28. Other

A. Fair Values of Financial Instruments:

	December 31,
	2009						2010
			Fair Value						Fair Value
Non-derivative financial instruments:	Book Value		Quotation in an active market		Estimated using a valuation technique		Book Value		Quotation in an active market		Estimated using a valuation technique
	NT$		NT$		NT$		NT$		NT$		NT$
Financial assets
Financial assets with book value equal to fair value		31,425,800		—		31,425,800		26,545,319		—		26,545,319
Available-for-sale financial assets, noncurrent		3,825,793		3,825,793		—		4,887,007		4,887,007		—
Financial assets carried at cost, noncurrent		315,394		—		—		1,449,343				—
		35,566,987		3,825,793		31,425,800		32,881,669		4,887,007		26,545,319
Financial liabilities
Financial liabilities with book value equal to fair value		14,872,398		—		14,872,398		16,426,214		—		16,426,214
Long-term loans (including current portion)		—		—		—		4,368,158		—		4,368,158
		14,872,398		—		14,872,398		20,794,372		—		20,794,372

Methods and assumptions used to estimate the fair values of financial instruments are as follows:

(1) Financial assets and liabilities with fair values equal to book values are cash, notes receivable, accounts receivable, other financial assets - current, refundable deposits, short-term loans, notes payable, accounts payable, income tax payable, accrued expenses, other payables, current portion of long-term debts, other current liabilities and other liabilities because of their short maturities.

(2) Available-for-sale financial assets, noncurrent are recorded at quoted market prices as their fair values due to the availability of the quoted price in an active market.

(3) Financial assets carried at cost, noncurrent are recorded at cost as there is no active quoted market prices and the fair value cannot be measured fairly.

(4) The book value of long-term loans approximates their fair value as floating interest rates are borne for the long term loans.

B. Financial assets and liabilities with the risk of interest rate fluctuation:

As of December 31, 2009 and 2010, the Company and its subsidiaries’ financial assets with fair value risk of interest rate fluctuation were NT$14,582,342 and NT$4,590,221, respectively. As of December 31, 2009 and 2010, the Company and its subsidiaries’ financial liabilities with fair value risk of interest rate fluctuation were NT$225,488 and NT$1,461,281, respectively. As of December 31, 2009 and 2010, the Company and its subsidiaries’ financial assets with cash flow risk of interest rate fluctuation were NT$3,534,000 and NT$9,508,500. As of December 31, 2009 and 2010, the Company and its subsidiaries’ financial liabilities with cash flow risk of interest rate fluctuation were nil and NT$4,368,158.

F-38

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

C. The income or expense of financial assets and liabilities that are not at fair value through profit or loss:

For the years ended December 31, 2008, 2009 and 2010, total interest income of financial assets that are not at fair value through profit or loss amounted to NT$366,086, NT$49,221 and NT$36,849, respectively. For the years ended December 31, 2008, 2009 and 2010, total interest expense of financial liabilities that are not at fair value through profit and loss were not recognized in earnings were NT$89,017, NT$36,850 and NT$11,530, respectively, Available-for-sale financial assets are measured at fair value at the balance sheet date. For the years ended December 31, 2008, 2009 and 2010, balance of the (decrease) increase to the stockholders’ equity due to changes in fair value were NT($3,797,804), NT$2,715,036 and NT$1,021,355, respectively. Unrealized (loss) gain on available-for-sale financial assets reclassified from equity to current earnings were NT($2,637,145), NT$1,947,879 and nil, respectively, for the years ended December 31, 2008, 2009 and 2010.

D. Financial risk control:

The Company and its subsidiaries have implemented appropriate risk management and control processes to identify, measure, and control the risks associated with the market, credit, liquidity and cash flows.

E. Financial risk information:

1. Financial assets: investments in equity instruments

	December 31,
	2009		2010
	NT$		NT$
Available-for-sale financial assets		3,825,793		4,887,007
Financial assets carried at cost		315,394		1,449,343
		4,141,187		6,336,350

(1) Market risk:

The Company and its subsidiaries’ investments in equity instruments are exposed to the market price risk. However, the Company and its subsidiaries perform risk management controls to minimize the potential loss to an acceptable level. The Company and its subsidiaries believe that the probability of significant market risk is low.

(2) Credit risk:

The Company and its subsidiaries’ investments in available-for-sale financial assets are through creditable financial institutions. The expected credit exposure to such financial institutions is low. For equity investments carried at cost, the Company and its subsidiaries have evaluated counter parties’ credit condition each time when the Company and its subsidiaries entered into investment transaction. Thus, the credit risk is low.

(3) Liquidity risk:

The Company and its subsidiaries’ available-for-sale financial assets are traded in active markets, which can be sold at the prices not significantly different from their market value. The Company and its subsidiaries are exposed to a greater liquidity risk for equity instruments measured at cost due to the fact that no active market exists for these instruments.

(4) Cash flow risk of interest rate:

The Company and its subsidiaries’ investments in equity financial assets are non-interest related. As a result, there is no cash flow risk of interest rate.

F-39

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

2. Financial liabilities: debt instruments

	December 31,
	2009		2010
	NT$		NT$
Short-term loans		225,488		1,461,281
Long-term loans		—		4,368,158
		225,488		5,829,439

(1) Market risk:

The Company and its subsidiaries’ short-term loans are expired within one year. Long-term loans are calculated with floating interest rates, so there is no significant market risk.

(2) Credit risk:

Debt instruments issued by the Company and its subsidiaries do not have significant credit risk.

(3) Liquidity risk:

The Company and its subsidiaries maintain sufficient working capital to meet their cash requirements. Therefore, there is no significant liquidity risk.

(4) Cash flow risk of interest rate:

The Company and its subsidiaries obtained short-term loans with fixed interest rate and long-term loans with floating interest rate. Effective interest rates of long-term loans will fluctuate based on the changes in market rate and also affect the future cash flow. Under the fixed exchange rate, the Company’s cash outflow will increase $46,268 annually while the interest rate increase by 1%.

F-40

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

3. The information of significant effect of foreign currency financial assets and liabilities:

The Company and its subsidiaries engaged in certain business denominated in foreign currencies, and therefore the fluctuation of foreign currency exchange rates had impact on these business consequently. The information of foreign currency financial assets and liabilities with significant effect by the fluctuation of foreign currency exchange rates as of December 31, 2009 and 2010 are as follows:

	December 31, 2009				December 31, 2010
(Foreign currencies : Functional currencies)	Foreign Currencies		Exchange Rates		Foreign Currencies		Exchange Rates
Financial Assets
Monetary assets
United States Dollars : New Taiwan Dollars		282,452		31.97		292,459		29.08
United States Dollars : Chinese Renminbi		12,146		6.8282		25,647		6.6227
Nonmonetary assets
United States Dollars : New Taiwan Dollars		8,644		31.94		18,628		29.08
Long-term investments under equity method
United States Dollars : New Taiwan Dollars		—		—		5,121		29.08
Financial Liabilities
Monetary liabilities
United States Dollars : New Taiwan Dollars		109,822		32.07		277,871		29.18
Japanese Yen : New Taiwan Dollars		3,513,483		0.3491		3,545,471		0.3602
United States Dollars : Chinese Renminbi		14,521		6.8282		64,466		6.6227
Japanese Yen : Chinese Renminbi		83,246		0.07378		322,825		0.08126

F-41

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

29. Special Disclosure Items Required by R.O.C. GAAP

A. Significant Transaction Information

(1) Loans to third parties attributed to financial activities:

For the year ended December 31, 2010: None.

(2) Endorsement and guarantee provided to third parties:

For the year ended December 31, 2010: None.

(3) The ending balance of securities are summarized as follows:

As of December 31, 2010:

Investor	Type of securities	Name of securities	The relationship of the issuers with the Company	General ledger accounts	Number of shares (in thousands)			Book value		Percentage of ownership			Market value per share (in dollars)
								NT$					NT$
Siliconware Precision Industries Co., Ltd.	Stock	SPIL (B.V.I.) Holding Limited	Subsidiary	Long-term investments accounted for under equity method		128,400			4,797,235		100.00	%		37.36	(Notes 3 and 6)
Siliconware Precision Industries Co., Ltd.	Stock	Vertical Circuits, Inc.	Investee accounted for under equity method	Long-term investments accounted for under equity method		15,710			148,918		30.69	%		9.48	(Note 3)
Siliconware Precision Industries Co., Ltd.	Stock	Unimicron Technology Corporation	—	Available-for-sale financial assets, noncurrent		76,502			4,345,317		4.94	%		56.80
Siliconware Precision Industries Co., Ltd.	Stock	ChipMOS Technologies (Bermuda) Ltd.	—	Available-for-sale financial assets, noncurrent		12,175			541,690		11.01	%		44.49	(Note 4)
Siliconware Precision Industries Co., Ltd.	Stock	ChipMOS Technologies Inc.	—	Financial assets, carried at cost, noncurrent		93,033			1,140,580		11.04	%		12.24	(Note 5)
Siliconware Precision Industries Co., Ltd.	Stock	Hsieh Yong Capital Co., Ltd.	—	Financial assets, carried at cost, noncurrent		57,810			170,000		7.58	%		8.27	(Note 3)
Siliconware Precision Industries Co., Ltd.	—	Mega Mission Limited Partnership	—	Financial assets, carried at cost, noncurrent		(Note 2	)		132,063		4.00	%		—
Siliconware Precision Industries Co., Ltd.	—	Others (Note 1)	—	Financial assets, carried at cost, noncurrent		—			6,700		—			—

F-42

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Note 1: The book value of individual marketable security does not exceed NT$100,000.

Note 2: The contributed capital was US $6,000.

Note 3: The market value is not available. Therefore, the net equity per share as of December 31, 2010 was used.

Note 4: The closing price of US$1.53 (in dollars) per share on December 31, 2010 was used. (Exchange rate at US$1: NT$29.08)

Note 5: The market value is not available. Therefore, the audited net equity per share as of June 30, 2010 was used.

Note 6: Eliminated under consolidation.

(4) Securities for which total buying or selling exceeds the lower of NT$100,000 or 20 percent of the capital stock:

For the year ended December 31, 2010:

			Name	The relationship	Beginning balance				Addition				Disposal								Ending balance
Investor	Name of the security	General ledger accounts	of the counter party	of the issuers with the Company	Number of shares / unit (in thousands)		Amount		Number of shares / unit (in thousands)		Amount		Number of shares / unit (in thousands)		Sales price		Book value		Gain (loss) from disposal		Number of shares / unit (in thousands)		Amount
							NT$				NT$				NT$		NT$		NT$				NT$
Siliconware Precision Industries Co., Ltd.	SPIL (B.V.I.) Holding Limited	Long-term investment accounted for under equity method	Capital increase by cash	Subsidiary		98,400		3,637,473		30,000		959,700		—		—		—		—		128,400		4,797,235 (Notes 1 and 2	)
Siliconware Precision Industries Co., Ltd.	Vertical Circuits, Inc.	Long-term investment accounted for under equity method	Capital increase by cash	Investee accounted for under equity method		—		—		15,710		152,675		—		—		—		—		15,710		148,918 (Note 1	)
Siliconware Precision Industries Co., Ltd.	ChipMOS Technologies Inc.	Financial assets, carried at cost, noncurrent	ChipMOS Technologies (Bermuda) Ltd.	—		—		—		93,033		1,140,580		—		—		—		—		93,033		1,140,580

Note 1: The ending balance includes the investment income (loss) and cumulative translation adjustments.

Note 2: Eliminated under consolidation.

F-43

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(5) Acquisition of real estate with an amount exceeding the lower of NT$100,000 or 20 percent of the capital stock:

For the year ended December 31, 2010:

									Related party as counter party
Name of the properties	Date of transaction	Transaction amount		Status of payment		Counter party	Relationship with the Company		Original owner which sold the property to the counter party		The relationship of the original owner with the Company		Date of the original transaction		Amount		The bases or reference used in deciding the price	Purpose and status of the acquisition	Other commitment
		NT$		NT$											NT$
Building improvements	January 2010		110,000		99,000	Acter Co., Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress
Building improvements	January 2010		177,000		177,000	Chung-Rui Construction Corporation Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress
Building improvements	January 2010		211,000		211,000	Acter Co., Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress
Building improvements	March 2010		204,100		204,100	Chung-Rui Construction Corporation Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress
Building improvements	March 2010		203,700		203,700	Acter Co., Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress
Building	April 2010		105,800		84,640	Jun-Biau Construction Corporation Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress
Building improvements	August 2010		184,500		—	Acter Co., Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress
Building improvements	October 2010		112,600		—	Chung-Rui Construction Corporation Ltd.		—		—		—		—		—	As specified in contract	For operating use	Payment made according to construction progress

(6) Disposal of real estate with an amount exceeding the lower of NT$100,000 or 20 percent of the capital stock:

For the year ended December 31, 2010: None.

F-44

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(7) Related party transactions with purchases and sales amounts exceeding the lower of NT$100,000 or 20 percent of the capital stock:

For the year ended December 31, 2010:

Description of the transaction

Description of and reasons for difference in transaction  terms compared to non-related party transactions

Notes or accounts receivable / payable

Purchase / sales company

Name of the counter party

Relationship with the counter party

Purchases / sales

Amount

Percentage of net purchases / sales

Credit terms

Unit price

Credit terms

Accounts payable amount (Note 2)

Percentage  of accounts payable

NT$

NT$

NT$

Siliconware Precision Industries Co., Ltd.

Siliconware Technology (Suzhou) Limited

Indirect subsidiary of the Company

Purchases

195,381

1

%

Note 1

—

—

5,079

—

Note 1: The purchase prices and payment terms provided by Siliconware Technology (Suzhou) Limited were determined in accordance with mutual agreement due to no comparable transactions.

Note 2: Eliminated under consolidation.

(8) Receivables from related parties exceeding the lower of NT$100,000 or 20 percent of the capital stock:

As of December 31, 2010: None.

(9) Transaction of derivative financial instruments:

For the year ended December 31, 2010: None.

F-45

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

B. Related Information on Investee Companies

(1) Basic information on investee companies:

For the year ended December 31, 2010:

				Original investments				The Company / majority owned subsidiary owns								Current period
Investor	Name of Investee	Location	Main activities	Current period ending balance		Prior period ending balance		Shares (in  thousands)			Ownership Percentage			Book value		Net income (loss) of investee			Income recognized by the Company			Note
				NT$		NT$								NT$		NT$			NT$
Siliconware Precision Industries Co., Ltd.	SPIL (B.V.I.) Holding Limited	British Virgin Islands	Investment activities		3,733,872		2,861,472		128,400			100.00	%		4,797,235		493,902			493,902		(Notes 1, 2, 7 and 8)
Siliconware Precision Industries Co., Ltd.	Vertical Circuits, Inc.	Scotts Valley, CA, USA	Assembly service providing		145,400		—		15,710			30.69	%		148,918		(156,036	)		(3,757	)	(Notes 1 and 7)
SPIL (B.V.I.) Holding Limited	Siliconware USA, Inc.	San Jose, CA, USA	Communications and relationship maintenance with companies headquartered in North America		36,350		36,350		1,250			100.00	%		135,518		5,205			5,205		(Notes 3, 7 and 8)
SPIL (B.V.I.) Holding Limited	SPIL (Cayman) Holding Limited	Cayman Islands, British West India	Investment activities		3,786,216		2,913,816		130,200			100.00	%		4,652,532		488,850			488,850		(Notes 3, 7 and 8)
SPIL (Cayman) Holding Limited	Siliconware Technology (Suzhou) Limited	Suzhou Jiangsu, China	Assembly and testing service providing		3,780,400		2,908,000		(Note 5	)		100.00	%		4,651,523		491,484			489,666		(Notes 4, 6, 7 and 8)

Note 1: The Company’s investee accounted for under the equity method.

Note 2: The Company’s subsidiary.

Note 3: An investee accounted for under the equity method of SPIL (B.V.I.) Holding Limited.

Note 4: An investee accounted for under the equity method of SPIL (Cayman) Holding Limited.

Note 5: The contributed capital was US$130,000.

Note 6: The investment income (loss) recognized during the current period already excludes the amount of unrealized intercompany profit on disposal of assets and loss on sales.

F-46

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Note 7: The foreign currency exchange rates prevailing at the balance sheet date were used for the currency translation.

Note 8: Eliminated under consolidation.

(2) The ending balance of securities held by investee companies:

As of December 31, 2010:

Investor

Type of securities

Name of securities

The relationship of the issuers with the Company

General ledger accounts

Number of shares (in thousands)

Book value (Notes 3 and 4 )

Percentage of ownership

Market value per share (in dollars) (Note 2)

NT$

NT$

SPIL (B.V.I.) Holding Limited

Stock

Siliconware USA, Inc.

Indirect subsidiary of the Company

Long-term investments accounted for under equity method

1,250

135,518

100.00

%

108.41

SPIL (B.V.I.) Holding Limited

Stock

SPIL (Cayman) Holding Limited

Indirect subsidiary of the Company

Long-term investments accounted for under equity method

130,200

4,652,532

100.00

%

35.73

SPIL (Cayman) Holding Limited

—

Siliconware Technology (Suzhou) Limited

Indirect subsidiary of the Company

Long-term investments accounted for under equity method

(Note 1

)

4,651,523

100.00

%

—

Note 1: The contributed capital was US$130,000.

Note 2: The market value is not available. Therefore, the net equity per share as of December 31, 2010 was used.

Note 3: The foreign currency exchange rates prevailing at the balance sheet date were used for the currency translation.

Note 4: Eliminated under consolidation.

F-47

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(3) Securities for which total buying or selling amount exceed the lower of NT$100,000 or 20 percent of the capital stock:

For the year ended December 31, 2010:

The relationship of the issuers with the Company

Beginning balance

Addition

Disposal

Ending balance

Investor

Name of the security

General ledger accounts

Name of the counter party

Number of shares / unit (in thousands)

Amount (Note 5)

Number of shares / unit (in thousands)

Amount (Note 5)

Number of shares / unit (in thousands)

Sales price

Book value

Gain (loss) from disposal

Number of shares / unit (in thousands)

Amount (Notes 4, 5 and 6)

NT$

NT$

NT$

NT$

NT$

NT$

SPIL (B.V.I.) Holding Limited

SPIL (Cayman) Holding Limited

Long-term investments accounted for under equity method

Capital increase by cash

Indirect subsidiary of the Company

100,200

2,913,816

30,000

872,400

—

—

—

—

130,200

4,652,532

SPIL (Cayman) Holding Limited

Siliconware Technology (Suzhou) Limited

Long-term investments accounted for under equity method

Capital increase by cash

Indirect subsidiary of the Company

(Note 1

)

2,908,000

(Note 2

)

872,400

—

—

—

—

(Note 3

)

4,651,523

Note 1: The contributed capital was US$100,000.

Note 2: The contributed capital was US$30,000.

Note 3: The contributed capital was US$130,000.

Note 4: The ending balance includes the investment income under equity method and cumulative translation adjustments.

Note 5: The foreign currency exchange rates prevailing at the balance sheet date were used for the currency translation.

Note 6: Eliminated under consolidation.

F-48

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

C. Information of investment in Mainland China:

(1) Information of investment in Mainland China:

Name of investee in Mainland China

Main activities of investee

Capital

Investment method

Accumulated remittance as of January 1, 2010

Remitted (collected) this period

Accumulated remittance as of December 31, 2010

Ownership held by the Company (Direct and indirect)

NT$

NT$

NT$

NT$

Siliconware Technology (Suzhou) Limited

Assembly and testing service providing

3,780,400 (US$ 130,000

)

(Note 1

)

2,908,000 (US$ 100,000

)

872,400 (US$ 30,000

)

3,780,400 (US$ 130,000

)

100

%

(Note 3

)

(Note 3

)

(Note 3

)

(Note 3

)

Investment income (loss) recognized by the Company during the period

Ending balance of investment

The investment income (loss) remitted back as of December 31, 2010

Accumulated remittance from Taiwan to Mainland China

The investment balance approved by Investment Commissions, Ministry of Economic Affairs

The ceiling of investment in mainland China according to Investment Commissions, Ministry of Economic Affairs

NT$

NT$

NT$

NT$

NT$

NT$

489,666

4,651,523

—

3,780,400

3,780,400

(Note 5

)

(Notes 2, 3 and 4

)

(Notes 3 and 4

)

(US$ 130,000

)

(US$ 130,000

)

Note 1: The Company set up a subsidiary in the third country to invest in Mainland China.

Note 2: The investment income (loss) was recorded based on the audited financial statements.

Note 3: The foreign currency exchange rates prevailing at the balance sheet date were used for the currency translation.

Note 4: Eliminated under consolidation.

F-49

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Note 5: Based on the Rule No. 09704604680 “Regulations Governing Security Investment and Technical Cooperation in the Mainland Area” set by Ministry of Economic Affairs, the Company received documents from the Industrial Development Bureau of Ministry of Economic Affairs, which approved that the Company’s operation is qualified for operations of operating headquarters. As such, the Company is not required to impute the ceiling of investment in Mainland China.

(2) Material transactions occurred directly between the Company and its Mainland China investee companies and material transactions occurred indirectly between the Company and its Mainland China investee companies via enterprises in other areas:

i. Property transactions between the parent company and the subsidiary for the years ended December 31, 2009 and 2010:

	For the year ended December 31, 2009
	Name of the property		Sales amount		Book value		Gain on disposal of property, plant and equipment		Other receivables
			NT$		NT$		NT$		NT$
Siliconware Technology (Suzhou) Ltd.		Equipment		163,522		116,162		47,360		20,230

	Name of the property		Purchase amount		Other payables
			NT$		NT$
Siliconware Technology (Suzhou) Ltd.		Equipment		2,991		—

	For the year ended December 31, 2010
	Name of the property		Sales amount		Book value		Gain on disposal of property, plant and equipment		Other receivables
			NT$		NT$		NT$		NT$
Siliconware Technology (Suzhou) Ltd.		Equipment		52,325		42,456		9,869		29,481

	Name of the property		Purchase amount		Other payables
			NT$		NT$
Siliconware Technology (Suzhou) Ltd.		Equipment		13,301		—

F-50

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

ii. Transactions above were eliminated under consolidation.

D. The business relationships and the significant transactions as well as amounts between the parent company and the subsidiary.

(1) For the year ended December 31, 2009:

					Transaction
No.		Company Name	Counterparty	Relationship	General ledger account	Amount		Transaction terms	Percentage of consolidated revenues or total assets
						NT$
	0	Siliconware Precision Industries Co., Ltd.	Siliconware USA, Inc.	Indirect owned subsidiary	Operating expense		368,058	As specified in contract		0.62	%
	0	Siliconware Precision Industries Co., Ltd.	Siliconware USA, Inc.	Indirect owned subsidiary	Accrued expense		62,350	Comparable to those provided by non-related parties		0.08	%
	0	Siliconware Precision Industries Co., Ltd.	Siliconware Technology (Suzhou) Limited	Indirect owned subsidiary	Purchase		347,248	As specified in contract		0.59	%
	0	Siliconware Precision Industries Co., Ltd.	Siliconware Technology (Suzhou) Limited	Indirect owned subsidiary	Accounts payable		189,952	As specified in contract		0.24	%

F-51

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(2) For the year ended December 31, 2010:

					Transaction
No.		Company Name	Counterparty	Relationship	General ledger account	Amount	Transaction terms	Percentage of consolidated revenues or total assets
						NT$
	0	Siliconware Precision Industries Co., Ltd.	Siliconware USA, Inc.	Indirect owned subsidiary	Operating expense	373,430	As specified in contract		0.58	%
	0	Siliconware Precision Industries Co., Ltd.	Siliconware USA, Inc.	Indirect owned subsidiary	Accrued expense	21,653	Comparable to those provided by non-related parties		0.03	%
	0	Siliconware Precision Industries Co., Ltd.	Siliconware Technology (Suzhou) Limited	Indirect owned subsidiary	Purchase	195,381	As specified in contract		0.31	%
	0	Siliconware Precision Industries Co., Ltd.	Siliconware Technology (Suzhou) Limited	Indirect owned subsidiary	Accounts payable	5,079	Comparable to those provided by non-related parties		0.01	%

F-52

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

30. Segment Information

A. Operation in Different Industries

The Company principally operates in one industry. The Company’s operation involves assembly, testing and turnkey services of integrated circuits.

B. Operations in Different Geographic Areas

The Company has no significant foreign operations.

C. Sales

	For the years ended December 31,
Geographic areas	2008		2009		2010
	NT$		NT$		NT$
Taiwan		21,020,922		20,097,950		20,512,347
U.S.		28,631,910		26,006,761		26,770,635
Canada		3,668,015		3,867,950		4,553,917
Others		9,082,087		9,321,931		12,020,571
		62,402,934		59,294,592		63,857,470

Sales by geographic region are identified by the locations where customers are headquartered.

	For the years ended December 31,
Services	2008		2009		2010
	NT$		NT$		NT$
Packaging revenues		53,780,062		51,356,743		54,140,057
Testing and other revenues		8,622,872		7,937,849		9,717,413
		62,402,934		59,294,592		63,857,470

The above table shows, for the period indicated, net revenues for group of similar services the Company provided.

D. Major Customers

A major customer is identified as the party that accounts for more than 10 % of the Company’s net sales in any given year listed below.

	For the years ended December 31,
	2008				2009				2010
Customers	Amount		% of net sale		Amount		% of net sale		Amount		% of net sale
	NT$				NT$				NT$
Customer A		4,808,879		8		4,402,282		7		6,393,270		10
Customer B		6,874,567		11		6,960,529		12		6,297,407		10
Customer C		5,164,169		8		6,293,643		11		5,375,772		8
		16,847,615		27		17,656,454		30		18,066,449		28

F-53

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

31. U.S. GAAP Reconciliation

The accompanying consolidated financial statements have been prepared in conformity with “Rules Governing the Preparation of Financial Reports by Securities Issuers” and accounting principles generally accepted in the Republic of China (“R.O.C. GAAP”), which differ in certain material respects from generally accepted accounting principles in the United States (“U.S. GAAP”). Such differences involve methods for measuring the amounts shown in the financial statements, as well as additional disclosures required by U.S. GAAP.

The following is a summary of the material adjustments to net income and shareholders’ equity, which would be required in reconciling the significant differences between R.O.C. GAAP and U.S. GAAP:

Reconciliation of consolidated net income:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
Net income as reported under R.O.C. GAAP		6,313,530			8,789,829			5,626,907			193,099
U.S. GAAP adjustments:
Compensated absences		(2,264	)		(14,994	)		(8,150	)		(280	)
Compensation		(1,581,727	)		—			—			—
Impairment on long-term investments		(279,843	)		—			—			—
Defined benefit pension plan — net periodic pension cost		240			95			(341	)		(12	)
Total U.S. GAAP adjustments		(1,863,594	)		(14,899	)		(8,491	)		(292	)
Taxation effect		(56,164	)		(20,401	)		(21,802	)		(748	)
Net income under U.S. GAAP		4,393,772			8,754,529			5,596,614			192,059
	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
Earnings per share under U.S. GAAP (in dollars)
Basic		1.42			2.81			1.80			0.06
Diluted		1.42			2.81			1.80			0.06
Weighted average number of common stock outstanding (in thousands)
Basic		3,088,843			3,116,361			3,116,361			3,116,361
Effect of dilutive securities — employee stock option		14,650			—			—			—
Diluted		3,103,493			3,116,361			3,116,361			3,116,361

F-54

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Reconciliation of consolidated stockholders’ equity

	December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
Total stockholders’ equity as reported under R.O.C. GAAP		59,314,121			63,081,226			61,296,181			2,103,507
U.S. GAAP adjustments:
Compensated absences		(58,207	)		(73,201	)		(81,351	)		(2,792	)
Defined benefit pension plan		(171,901	)		(362,506	)		(385,565	)		(13,231	)
Acquisition of Siliconware Corp.		4,873,500			4,873,500			4,873,500			167,244
Taxation effect		(40,309	)		(60,710	)		(82,513	)		(2,832	)
Stockholders’ equity under U.S. GAAP		63,917,204			67,458,309			65,620,252			2,251,896

Movements in stockholders’ equity in accordance with U.S. GAAP:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
Balance at January 1, as reported		71,695,985			63,917,204			67,458,309			2,314,973
Net income under U.S. GAAP		4,393,772			8,754,529			5,596,614			192,060
Employee stock bonus		2,053,181			—			—			—
Adjustment for investee companies’ capital reserve		5,507			—			—			—
Cumulative translation adjustment on long-term investments		211,940			(88,289	)		(293,841	)		(10,084	)
Change in fair value of available-for-sale marketable securities		(880,816	)		767,157			1,021,355			35,050
Employee stock option exercised		7,395			—			—			—
Cash dividends		(13,836,139	)		(5,674,662	)		(8,040,212	)		(275,917	)
Cash dividends for treasury stock held by subsidiaries		161,415			65,212			—			—
Defined benefit pension plan		104,964			(282,842	)		(121,973	)		(4,186	)
Balance at December 31		63,917,204			67,458,309			65,620,252			2,251,896

F-55

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

The balance sheet accounts under U.S. GAAP are as follows:

	December 31,
	2009		2010
	NT$		NT$		US$
Current Assets
Cash and cash equivalents		9,242,800		13,297,003		456,314
Short-term investments		10,372,361		2,222,005		76,253
Notes receivable, net		40,545		73,229		2,513
Accounts receivable, net		11,299,418		9,648,610		331,112
Inventories		2,992,331		3,515,897		120,655
Other current assets		2,042,399		2,441,496		83,784
		35,989,854		31,198,240		1,070,631
Long-term investments		4,141,187		6,485,268		222,556
Property, plant and equipment		36,316,125		42,926,795		1,473,123
Intangible assets		4,873,500		4,873,500		167,244
Other assets		2,036,686		2,124,606		72,910
Total Assets		83,357,352		87,608,409		3,006,464
Current liabilities		15,117,743		16,675,599		572,258
Long-term liabilities		—		4,368,158		149,902
Other liabilities		781,300		944,400		32,408
Total Liabilities		15,899,043		21,988,157		754,568
Total Stockholders’ Equity		67,458,309		65,620,252		2,251,896
Total Liabilities and Stockholders’ Equity		83,357,352		87,608,409		3,006,464

The significant accounting policies for the reconciliation from R.O.C. GAAP to U.S. GAAP are as follows:

(1) Consolidation

Under R.O.C. GAAP, Statement of Accounting Standards No. 7, “Consolidated Financial Statements” requires that an entity fully consolidate all of the subsidiaries which it owns, directly or indirectly, more than 50% of the voting rights and which it owns, directly or indirectly, less than 50% of the voting rights but has effective control. Significant inter-company transactions and balances between the Company and its subsidiaries or investees accounted for under the equity method are eliminated.

Under U.S. GAAP, ASC Topic 810, Consolidation (“ASC Topic 810”), requires existing unconsolidated variable interest entities (VIE) to be consolidated by their primary beneficiaries if the entities do not effectively disperse risks among parties involved. In other words, the Company would be the primary beneficiary of such entity if it absorbs a majority of the entity’s expected losses, receives a majority of its expected residual returns, or both. The Company performed analysis for VIEs and did not identify any variable interest entity pursuant to ASC Topic 810.

F-56

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(2) Compensated Absences

Under R.O.C. GAAP, the Company is not required to accrue for unused vacation at the end of each year. However, under U.S. GAAP, unused vacation that can be carried over to the next year has to be accrued for at each balance sheet date to properly match the expense with the period in which the employee provided the services. As of December 31, 2008, 2009 and 2010, total amounts of compensated absences reconciled from R.O.C. GAAP to U.S. GAAP were NT$(2,264), NT$(14,994) and NT$(8,150), respectively.

(3) Share-based Compensation

Employee Stock Option

A. Under U.S. GAAP, for periods prior to January 1, 2006, the Company elected to follow Accounting Principles Board Opinion No.25, “Accounting for Stock Issued to Employees” (APB 25) and related interpretations and applied intrinsic value method in accounting for its employee stock options. Effective starting from January 1,2006, the Company adopted the modified prospective transition method provided by ASC Topic 718, Compensation — Stock Compensation (“ASC Topic 718”) to use the fair value method with forfeitures estimated at the time of grant and revise in subsequent periods if actual forfeitures differ from those estimates. In addition, the exercise price of the Company’s stock options is subject to change due to the distribution of stock dividends. The Company was required to measure the effects of the modification and record incremental compensation cost, if any.

B. For computing the fair value of options granted, the Company used the Black-Scholes option-pricing model with input assumptions of expected volatility, expected life, expected dividend rate and expected risk-free rate of return. The Company applied the historical volatility based on the historical stock price volatility over the historical time period commensurate with the expected term of the employee stock option. The Company determined the expected terms by using the simplified method in accordance with Staff Accounting Bulletin No.110 as the awards meet the definition of a “plain vanilla award”. The expected term is determined as the mid-point between the vesting period and the contractual term. The Company estimated dividend yield by historical experience. Besides, the Company used the yield of Taiwan Government Bond with the contract term equal to the expected term of the share options as our risk-free interest rate pursuant to ASC Topic 718, which required entities based in jurisdictions outside the United States to use the implied yield of zero-coupon government bonds currently available in the market where the shares are primarily traded when estimating the risk-free interest rate.

C. Additional information concerning our employee stock option is summarized as following:

	For the years ended December 31,
	2008		2009		2010
	NT$		NT$		NT$		US$
Total intrinsic value of the options exercised		54,131		—		—		—
Total fair value of options vested		—		—		—		—

F-57

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Compensation to Directors and Employees
	For the years ended December 31,
Net income impact of compensation adjustment	2008		2009		2010
	NT$		NT$		NT$		US$
U.S. GAAP adjustment:
Remuneration to directors		—		—		—		—
Employee bonuses accrual		—		—		—		—
Adjustment to fair market value		1,581,727		—		—		—
Total employee bonuses		1,581,727		—		—		—
Total net income adjustment relating to compensation		1,581,727		—		—		—

A. Remuneration to directors

The Company’s Articles of Incorporation require a cash remuneration payment to its directors. Before January 1, 2008, such payments were charged directly to retained earnings for the period in which shareholders approve such payment under R.O.C. GAAP. However, such cash payments should be recorded as compensation expense in the period when services are rendered under U.S. GAAP.

Effective January 1, 2008, pursuant to R.O.C. EITF 96-052 “Accounting for Employees’ Bonuses and Directors’ and Supervisors’ Remuneration” as prescribed by the Accounting Research and Development Foundation, R.O.C., dated March 16, 2007, the Company should no longer treat employees’ bonuses and directors’ and supervisors’ remuneration as reductions of retained earnings but record an cost / expense and related liability when the Company has legal obligations and could reasonably estimate such amount.

B. Employee bonuses

Certain employees of the Company are entitled to bonuses in accordance with applicable provisions of the Company’s Articles of Incorporation. Employee bonuses are set at 10% of distributable retained earnings. Distributable retained earnings are calculated as retained earnings after various reserves have been made in accordance with R.O.C. regulations and the Company’s Articles of Incorporation and after appropriation for remuneration to directors. Employee bonuses may be granted in cash, shares, or a combination of both. Regardless of the form of the bonus, however, the stockholders are required by the Article of Incorporation to approve a 10% of distributable earnings as the employee bonus whenever there is a dividend distribution. Before January 1, 2008, such bonuses are appropriated from retained earnings in the period stockholders’ approval is obtained under R.O.C. GAAP. If such employee bonuses are settled through the issuance of shares of the Company, the amount charged against retained earnings is based on the par value of the common shares issued. Under U.S. GAAP, employee bonus expense is initially accrued at the end of the period when services are rendered, at 10% of the distributable retained earnings, which is considered the minimum liability the Company has to pay. When bonuses are approved by the stockholders in the subsequent year, an additional compensation expense is recorded for the difference between the par value and the fair market value of shares granted to employees. The difference between U.S. GAAP and R.O.C. GAAP in this area would result in adjustments to the Company’s net income and stockholders’ equity as shown in reconciliation tables set forth at the beginning of this note. This accounting treatment for employee bonuses is based on the guidance of the U.S. SEC Staff Paper entitled “International Reporting and Disclosure Issues in the Division of Corporate Finance dated November 1, 2004”. The Board of Directors of the Company resolved to distribute employee bonuses of NT$1,571,512 from 2007 earnings in 2008. In addition to the adjustments to net income and stockholders’ equity as shown in the above schedules, the application of U.S. GAAP to employee’s bonuses would also result in a reclassification from retained earnings to additional paid-in capital of NT$8,792,429 for the year ended December 31, 2008.

F-58

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

From January 1, 2008, the Company adopted R.O.C. EITF 96-052 “Accounting for Employees’ Bonuses and Directors’ and Supervisors’ Remuneration” under R.O.C. GAAP and should no longer treat employees’ bonus as a reduction of retained earnings but record an expense and related liability when the Company has legal obligations and could reasonably estimate such amount.

(4) Defined Benefit Pension Plan

A. Net periodic pension cost variance between U.S. GAAP and R.O.C. GAAP

The Company’s net periodic pension cost under U.S. GAAP may differ from the one under R.O.C. GAAP due to differences in, but not limited to, service cost, interest cost, expected return on assets and the amortization in net gain (loss). Reconciliation of the difference between U.S. GAAP and R.O.C. GAAP is required before reaching U.S. GAAP funding status. For the years ended December 31, 2008, 2009 and 2010, total amounts of pension cost reconciled from R.O.C. GAAP to U.S. GAAP were NT$240, NT$95 and NT$(341), respectively.

B. Adjustment for the U.S. GAAP funding status

Under R.O.C. GAAP, pension liability is accrued without reflecting the funded status and additional minimum liability is used when the fair value of pension assets is less than the amount of accumulated benefit obligation. Under U.S. GAAP, additional pension liability or asset is accrued pursuant to ASC Topic 715, Compensation — Retirement Benefits (“ASC Topic 715”), which requires the recognition of the overfunded or underfunded status of a defined benefit postretirement plan through other comprehensive income, net of tax, at the balance sheet date and eliminates the use of additional minimum liability. Gains and loss, prior service costs, or transition assets and liabilities unrecognized as components of net periodic benefit cost of the period in accordance with ASC Topic 715, are now recognized as a component of other comprehensive income. For the years ended December 31, 2008, 2009 and 2010, the amounts of other comprehensive income reconciled from R.O.C. GAAP to U.S. GAAP due to the aforementioned GAAP difference were NT$(171,901), NT$(362,506) and NT$(385,565), respectively.

(5) 10% Tax on Undistributed Earnings and Tax Effect of U.S. GAAP Adjustments

Under R.O.C. GAAP, a 10% tax on undistributed earnings is recognized as a tax expense in the year of stockholders’ approval. Under U.S. GAAP, the 10% tax on undistributed earnings should be accrued during the period the earnings generated and adjusted to the extent that distributions are approved by the stockholders in the following year. Moreover, additional tax benefit (expense) and deferred tax assets or liabilities would be adjusted for the reconciled items resulting in income differences between R.O.C. GAAP and U.S. GAAP. For the years ended December 31, 2008, 2009 and 2010, total amounts of tax expense reconciled from R.O.C. GAAP to U.S. GAAP were NT$56,164, NT$20,401 and NT$21,802, of which NT$56,822, NT$22,286 and NT$22,176 were adjusted for the undistributed earnings.

F-59

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(6) Earnings Per Share (EPS)

Prior to January 1, 2008, in calculating weighted average number of shares outstanding for EPS purposes under R.O.C. GAAP, employee bonus shares have been treated as outstanding for all periods, in a manner similar to a stock split or dividend, and are retroactively adjusted to previous years’ calculation of weighted-average outstanding shares. Effective January 1, 2008, as employees’ bonus could be distributed in the form of stock, the diluted EPS computation shall include those estimated shares that would be increased from employees’ stock bonus issuance in the weighted average number of common shares outstanding during the reporting year, which taking into account the dilutive effects of stock bonus on potential common shares; whereas, basic EPS shall be calculated based on the weighted average number of common shares outstanding during the reporting year that include the shares of employees’ stock bonus for the appropriation of prior year earnings, which have already been resolved at the stockholders’ meeting held in the reporting year. Since capitalization of employees’ bonus no longer belongs to distribution of stock dividends (or retained earnings and capital reserve capitalized), the calculation of basic EPS and diluted EPS for all periods presented shall not be adjusted retroactively. However, the accounting treatment for the appropriation of employees’ bonus for 2007 earnings resolved at the stockholders’ meeting held in 2008 is still in accordance with the regulations on capitalization of employees’ bonus under paragraphs 19 and 39 of R.O.C. SFAS No. 24, “Earnings per Share”. Under U.S. GAAP, employee bonus shares have been considered separately from the stock dividend or split and have been treated as outstanding from the date when they were issued. The numbers of employee bonus shares issued in 2008, 2009, and 2010 were 47,145,362 shares, nil and nil, respectively.

For the purpose of computing the dilutive effect of the employee stock option, the treasury-stock method is used. Treasury shares that could be repurchased with assumed proceeds from the exercise of employee stock options might not be sufficient for the share issued upon exercising options. Therefore, incremental shares are added to the weighted average number of shares outstanding. Under R.O.C. GAAP, the assumed proceeds are the exercise price. Under U.S. GAAP, the assumed proceeds is the sum of (a) the exercise price, (b) the amount of compensation cost attributed to future services and not yet recognized, and (c) the amount of excess tax benefits that would be credited to additional paid-in capital assuming exercise of the options. Therefore, the amount of incremental shares calculated under U.S. GAAP is different from the one calculated under R.O.C. GAAP.

(7) Goodwill Acquired from Merger

Under R.O.C. GAAP, the fair value of the net assets we received was used as the value of the consideration for the acquisition of the remaining interests in Siliconware Corporation on December 31, 2000 and reflected in the common stock and capital reserve in our balance sheet. As the consideration is equal to the fair value of the net assets received, no goodwill is recorded.

Under U.S. GAAP, in connection with the acquisition of Siliconware Corporation in 2000, the Company recorded net assets and goodwill of NT$5,415,439, respectively, based on an independent appraisal report. Before January 1, 2002, goodwill was amortized on straight-line basis over ten years. Effective January 1, 2002, ASC Topic 350, Intangibles — Goodwill and Other (“ASC Topic 350”) ceased amortization of goodwill and required the Company to perform the annual impairment analysis using a fair value approach. As of December 31, 2009 and 2010, the net carrying amount of goodwill for each year was NT$4,873,500 and no impairment of goodwill was identified during 2008 to 2010.

F-60

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(8) Stock Dividends

Under R.O.C. GAAP, an issuance of stock dividend is recorded at par with a charge to retained earnings. Under U.S. GAAP, if the ratio of distribution is less than 25 percent of shares of the same class outstanding, the fair value of the shares issued should be charged to retained earnings. This different treatment under U.S. GAAP results in reclassifications from retained earnings to additional paid-in capital of NT$34,554,263 as of December 31, 2009 and 2010, respectively, which causes the decrease of retained earnings and increase of additional paid-in capital. The adjustments have no effect on shareholders’ equity.

(9) Impairment of Long-lived Assets

Under both R.O.C. GAAP and U.S. GAAP, the Company is required to evaluate whether long-lived assets are subject to impairment. Impairment test is performed whenever event occurs or evidence indicates the carrying amount of an asset may not be recoverable.

Under R.O.C. GAAP, R.O.C. SFAS No. 35, “Accounting for Assets Impairment”, a long-lived asset is considered impaired when the anticipated recoverable amount is less than the asset’s carrying value. Recoverable amount is measured as the higher of net selling price or value in use (discounted cash flows). The difference between the recoverable amount and the asset’s carrying amount is recognized as a loss in earnings.

Under U.S. GAAP, a long-lived asset is considered impaired when the anticipated undiscounted cash flows are less than the asset’s carrying value. In that event, a loss is recognized based on the amount by which the carrying value exceeds the fair value of the long-lived assets. The estimate of fair value is generally based on quoted market prices, on the best available information, including prices for similar assets and the results of using other valuation techniques, or discounted cash flows.

The Company performs periodical review for its long-lived assets and reclassifies idle assets from assets held for operating use. Idle assets are no longer used for production purposes due to technology phase out and replacement and are disposed as buyers are identified. These assets are reported at the lower of carrying amount or fair value less cost to sell. The impairment losses on idle assets for the years ended December 31, 2008, 2009 and 2010 were NT$43,093, NT$73,882 and NT$117,847, respectively. No impairment was identified for other long-lived assets besides idle assets and no reconciliation for impairment loss between R.O.C. GAAP and U.S. GAAP were made for the years ended December 31, 2008, 2009 and 2010.

(10) Disposal of ChipMOS Taiwan with Subscription of ChipMOS Technologies (Bermuda) Ltd.

On March 27, 2007, the Company disposed its common stock ownership in ChipMOS Technologies Inc., or “ChipMOS Taiwan”, and acquired common stock ownership in ChipMOS Technologies (Bermuda) Ltd., or ChipMOS Bermuda, the parent company of ChipMOS Taiwan, through a private stock offering. Under R.O.C. GAAP, the Company evaluated whether this exchange had commercial substance, which was the expectation of significant change of the future cash flows of the Company, and concluded that no such significant change would be expected. Therefore, the Company recognized gain on disposal of investment of NT$793,492 for the year ended December 31, 2007 and deferred the recognition of gain on disposal of NT$279,843. However, under U.S. GAAP, the Company accounted for this transaction as a sale of financial assets in accordance with ASC Topic 860 － Transfers and Servicing. Therefore, the Company recorded the exchange at fair value and included deferred gain under the R.O.C. GAAP in its U.S. GAAP earnings for the year ended December 31, 2007.

F-61

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

Under the impact of the global financial crisis, the Company performed evaluation of impairment toward ChipMOS Bermuda and recognized other-than-temporary impairment loss of NT$2,143,973 under R.O.C. GAAP and NT$2,423,816 under U.S. GAAP for the year ended December 31, 2008.

32. Additional Disclosure Required by U.S. GAAP

(1) Risks and Uncertainties

The Company is a provider of subcontract IC assembly and testing services. The Company’s revenues are derived primarily from precision dicing of silicon wafers into individual ICs, mounting and wire bonding ICs to lead frames, and sealing ICs in molded plastic packages. The Company’s other products include a variety of turnkey services, including the grinding of wafers to specified thickness, function testing of packaged ICs, and drop shipment to customers of the IC manufactures. The Company provides its services on a global basis but mainly to customers in Taiwan of 32.1% and North America of 41.9% in 2010. The Company’s first two largest customers accounted for a total of 19%, 23%, 20% and of net sales in 2008, 2009 and 2010, respectively, and its five largest customers accounted for 39%, 41% and 41% of the Company’s net sales in 2008, 2009 and 2010, respectively.

In 2008, 2009 and 2010, some of the Company’s net operating revenues were denominated in currencies other than N.T. dollars, such as U.S. dollar, Japanese Yen and other currencies. The Company did not hedge any portion of the resulting net foreign exchange position and would be affected by the fluctuations in U.S. dollar, Japanese Yen and other currencies.

Substantially all of the Company’s accounts receivables are due from companies in high technology industries located primarily in Asia and North America. Further, the five largest receivables amounted to NT$5,262,940 and NT$4,449,208 as of December 31, 2009 and 2010, respectively. The Company performs periodic credit evaluations of its customers’ financial condition and generally does not require collateral. Receivables are generally due within 90 days.

Other factors that could affect the Company’s future operating results and cause actual results to vary materially from historical results include, but are not limited to, dependence on the highly cyclical nature of both the semiconductor and the personal computer industries, competitive pricing and declines in average selling prices, availability of manufacturing capacity, dependence on raw materials and competition.

(2) Maturity of Long-term Liabilities

Aggregate maturities for the Company’s long-term loans as of December 31, 2010 are as follows:

Years ending December 31,	Amounts
	NT$		US$
2011		—		—
2012		—		—
2013		1,459,000		50,069
2014		1,459,000		50,069
2015		1,459,000		50,069
		4,377,000		150,207

F-62

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(3) Fair Value Measurement

ASC Topic 820, Fair Value Measurements and Disclosures (“ASC Topic 820”), defines fair value, provides a framework for measuring fair value and requires additional disclosure about fair value measurements. ASC Topic 820 also established a three-level fair value hierarchy for valuation inputs as follows:

Level 1:	use quoted prices (unadjusted) in active markets for identical assets or liabilities
Level 2:	use inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.
Level 3:	use inputs that are generally unobservable and reflect the use of significant management judgments and estimates.

A. Fair value measurements on a recurring basis:

Assets measured and recorded at fair value on a recurring basis as of December 31, 2009 and 2010 were as follows:

	Level 1				Level 2				Level 3
	2009		2010		2009		2010		2009		2010
	NT$		NT$		NT$		NT$		NT$		NT$
Time deposit with original maturities more than 3 months (Note)		—		—		10,372,361		2,222,005		—		—
Marketable securities: available-for-sale (Semiconductor industry)		3,825,793		4,887,007		—		—		—		—

Note: Included in short-term investments

B. Fair value measurements on a nonrecurring basis:

For the year ended December 31, 2008, the Company identified circumstances that indicated the fair value of financial assets carried at cost sustained other-than-temporary impairments and recognized impairment loss of NT$393,460 based on the proportional interests on these assets for the year ended December 31, 2008 to write down the carrying values of these investments to their estimated values. The fair value measurements were determined using cost approach based on inputs, which were classified as Level 3 as they were unobservable and required management’s judgment.

F-63

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(4) Uncertainty in Income Taxes

ASC Topic 740, Income Taxes (“ASC Topic 740”) requires the recognition of the impact of a tax position in our financial statements if that position is more likely than not of being sustained on audit. This interpretation also prescribes measurement of a tax position taken or expected to be taken in a tax return and provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition.

The Company adopted the two-step evaluation process required by this interpretation. The first step is to determine whether it is more likely than not that a tax position will be sustained upon examination based on the technical merits of the position. The second step is to determine the amount of benefit to recognize in the financial statements if the more-likely-than-not recognition threshold is met. The tax position is measured at the largest amount of benefit that is greater than 50 percent likely of being realized upon settlement. As a result of the evaluation, the Company did not recognize any cumulative effect adjustment to the retained earnings at the beginning of the years 2009 and 2010. As of December 31, 2009 and 2010, there was no material uncertain tax position or unrecognized tax benefit identified by the Company.

(5) Cash and Cash Flow Statements

Under R.O.C. GAAP, all certificates of deposit are classified as cash and cash equivalents. Under U.S. GAAP, cash equivalents are short-term, highly liquid investments that are readily convertible to known amounts of cash and have original maturities of three months or less. As of December 31, 2008, 2009 and 2010, the amounts of time deposit with original maturities more than three months are NT$ 5,899,123, NT$ 10,372,361 and NT$ 2,222,005, respectively. In addition, payment for employees’ cash bonuses are classified as cash used in operating activities under U.S. GAAP compared to which classified as cash used in financing activities under R.O.C. GAAP. Summarized cash flow information under U.S. GAAP would be presented as follows:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
Net cash provided by operating activities		20,504,634			15,492,282			14,406,518			494,390
Net cash provided used in investing activities		(16,108,193	)		(10,094,156	)		(7,932,190	)		(272,210	)
Net cash used in financing activities		(13,827,063	)		(9,053,537	)		(2,266,249	)		(77,771	)
Effect of foreign exchange		94,206			(43,631	)		(153,876	)		(5,281	)
Net (decrease) increase in cash and cash equivalents		(9,336,416	)		(3,699,042	)		4,054,203			139,128
Cash and cash equivalents at beginning of the year		22,278,258			12,941,842			9,242,800			317,186
Cash and cash equivalents at the end of the year		12,941,842			9,242,800			13,297,003			456,314

F-64

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(6) Comprehensive Income

Comprehensive income under R.O.C. GAAP for the years ended December 31, 2008, 2009 and 2010 and accumulated other comprehensive income balances as of December 31, 2009 and 2010 are summarized as follows:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$			US$
Net income		6,313,530			8,789,829			5,626,907			193,099
Other comprehensive income (loss), net of taxes
Cumulative translation adjustment on equity investments		211,940			(88,289	)		(293,841	)		(10,084	)
Remuneration to directors and supervisors		(157,405	)		—			—			—
Employees’ cash bonus		(1,100,058	)		—			—			—
Adjustment for unrealized (loss) gain on available-for-sale financial assets		(1,160,659	)		767,157			1,021,355			35,050
Adjustment for investee companies’ capital reserve		5,507			—			—			—
Net loss not recognized as pension cost		(39,559	)		(92,142	)		(99,254	)		(3,406	)
Comprehensive income		4,073,296			9,376,555			6,255,167			214,659

	As of December 31,
	2009			2010
	NT$			NT$			US$
Accumulated other comprehensive income balances
Cumulative translation adjustment on equity investments		205,934			(87,907	)		(3,017	)
Adjustment for unrealized loss on available-for-sale financial assets		767,157			1,788,512			61,377
Net loss not recognized as pension cost		(169,314	)		(268,568	)		(9,216	)
Accumulated other comprehensive income		803,777			1,432,037			49,144

F-65

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(7) Employers’ Disclosure about Pension Benefit

A. The following tables set forth the actuarial assumptions, funded status and amounts recognized for the Company’s defined benefit pension plan pursuant to ASC Topic 715:

(1) Assumptions:

	For the years ended December 31,
	2008			2009			2010
Discount rate		2.20	%		2.25	%		2.00	%
Long-term rate of compensation increase		1.00	%		2.00	%		2.00	%
Expected rate of return on plan assets		2.50	%		2.00	%		2.50	%

In determining the discount rate, ASC Topic 715 recommends some factors for consideration, including: (a) rates of return on high-quality, fixed-income investments currently available and expected to be available during the period to maturity of the pension benefits; and (b) rates implicit in current prices of annuity contracts that could be used to effectively settle the pension obligation. Since Taiwan bond market does not have a deep market for corporate bonds, the yield rates of government bonds with duration years of 15 years or more are mainly used in determining the discount rate.

(2) Change in Benefit Obligation:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Benefit obligation at the beginning of the year		(1,620,782	)		(1,544,731	)		(1,922,596	)
Service cost		(35,463	)		(29,786	)		(33,034	)
Interest cost		(45,252	)		(34,630	)		(43,083	)
Plan amendments		59,238			(73,596	)		—
Actuarial loss		76,848			(284,261	)		(154,768	)
Benefits paid		20,680			44,408			33,457
Projected benefit obligation at the end of the year		(1,544,731	)		(1,922,596	)		(2,120,024	)

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SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(3) Change in Plan Assets:

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Fair value of plan assets at the beginning of the year		1,059,039			1,130,537			1,143,276
Actual return on plan assets		38,553			7,487			16,981
Employer contributions		53,625			49,660			49,676
Benefits paid		(20,680	)		(44,408	)		(33,457	)
Fair value of plan assets at the end of the year		1,130,537			1,143,276			1,176,476

(4) Funded Status:

	December 31,
	2009			2010
	NT$			NT$
Projected benefit obligation		(1,922,596	)		(2,120,024	)
Fair value of plan assets		1,143,276			1,176,476
Funded status		(779,320	)		(943,548	)
Unrecognized transition assets		(912	)		—
Net prior service cost		15,691			14,624
Unrecognized net loss		734,269			870,634
Accrued pension cost - before adjustment		(30,272	)		(58,290	)
Additional liability		(749,048	)		(885,258	)
Accrued pension cost - after adjustment		(779,320	)		(943,548	)

(5) Net Pension Cost :

	For the years ended December 31,
	2008			2009			2010
	NT$			NT$			NT$
Service cost		35,463			29,786			33,034
Interest cost		45,252			34,630			43,083
Expected return on assets		(32,470	)		(28,862	)		(23,215	)
Amortization of unrecognized transition assets		(913	)		(913	)		(912	)
Net prior service cost		(1,424	)		91			1,067
Amortization of unrecognized net loss		15,672			10,966			24,637
Net periodic pension cost		61,580			45,698			77,694

(6) Other Required Disclosure:

	December 31,
	2009			2010
	NT$			NT$
Accumulated benefit obligation		(1,365,669	)		(1,524,750	)

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SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

B. Valuation and allocation of plan assets

The plan assets are all maintained in cash in the designated account at Bank of Taiwan (BOT). BOT holds cash contributions made by the Company and invests the contributions into its managed portfolio, which may contain, but not limited to, government loans, equities, bonds, foreign investment, short-term notes and securitized products. In addition, under the Labor Standards Law, the rate of return on assets shall not be less than the average interest rate on a two-year time deposit published by the local banks. The government is responsible for any shortfall in the event that the rate of return is less than the required rate of return. The Company does not have authority on how to invest the money. The plan assets increase by the Company’s contributions, account interest earned and profit sharing of the portfolio of BOT pension assets and decrease by the payments made to the retired employees.

C. Additional disclosures under ASC Topic 715 regarding pension benefits are as follows:

(i) Estimated future benefit payments:

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:

	Amounts
	NT$		US$
2011		21,772		747
2012		11,284		387
2013		14,226		488
2014		17,724		608
2015		43,047		1,477
Year 2016 to 2020		380,830		13,069

(ii) Contributions:

The Company expects to contribute NT$ 49,814 to its pension plan in 2011.

(iii) Plan assets:

The plan assets are all maintained in cash at Bank of Taiwan (BOT) and the Company does not have authority on how to invest the money. Hence, the plan assets are regarded as cash and cash equivalents. The subsequent fair value of the fund assets is subject to investment and distribution decisions made by its monitory committee and will not necessarily result in the proportional fair value of the plan assets. Therefore, the fair value measurement of plan assets contributed by the Company should be categorized in level 1.

(8) Inventory Provision

Inventories are stated at the lower of cost or net realizable value by item, except where it may be appropriate to group similar or related items. Net realizable value is the estimated selling price in the ordinary course of business less all estimated costs of completion and necessary selling expenses. The accounting treatment under R.O.C. GAAP is identical to which under U.S. GAAP.

(9) Revenue Recognition Accounting Policy

The Company derives its revenues from the provision of independent assembly, testing services and turnkey services and recognizes service revenues upon shipment or upon completion of various stages of turnkey services, based upon transaction terms and when collection is reasonable assured, which is essentially the same under U.S. GAAP. If turnkey services are negotiated in one contract, the Company recognizes revenues based on the quoted prices when all of the revenue recognition criteria are met.

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SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(10) Major Debt Covenants

The major covenants of the Company’s long-term loans are as follows:

a. Current ratio should be larger than 100%.

b. Liability to equity ratio should be lower than 100%.

c. Interest coverage ratio should be larger than 400%.

(11) Operating Leases

The Company entered into five lease contracts with Science Park Administration for the use of land of the facility located in Hsinchu, Taiwan. None of these five contracts have met any of the four criteria classified as capital leases and no noncancelable lease terms are included in the leases. Rental expenses recorded for the years ended December 31, 2008, 2009 and 2010 were NT$10,328, NT$10,295 and NT$18,224, respectively.

(12) Valuation and Qualifying Accounts and Reserves

The information about our valuation and qualifying accounts and reserves are as follows:

Description	Balance at beginning of period		Additions Charged  to Expense		Deductions Write-offs		Balance at end of period
	NT$						NT$
For the year ended 2008
Allowance for doubtful accounts		33,114		271,173		—		304,287
Allowance for sales discounts		35,943		552,676		432,523		156,096
Allowance for loss on obsolescence and decline in market value of inventory		66,385		9,196		—		75,581
Allowance for loss on idle assets		260,323		43,093		79,462		223,954
Allowance for deferred income tax assets, current		5,161		—		5,161		—
Allowance for deferred income tax assets, noncurrent		189,828		66,886		—		256,714
For the year ended 2009
Allowance for doubtful accounts		304,287		79,188		50,939		332,536
Allowance for sales discounts		156,096		1,344,325		1,054,372		446,049
Allowance for loss on obsolescence and decline in market value of inventory		75,581		6,850		—		82,431
Allowance for loss on idle assets		223,954		73,882		82,418		215,417
Allowance for deferred income tax assets, current		—		—		—		—
Allowance for deferred income tax assets, noncurrent		256,714		—		97,020		159,694
For the year ended 2010
Allowance for doubtful accounts		332,536		10,717		276,325		66,928
Allowance for sales discounts		446,049		603,849		897,226		152,672
Allowance for loss on obsolescence and decline in market value of inventory		82,431		—		25,305		57,126
Allowance for loss on idle assets		215,417		117,847		106,169		227,095
Allowance for deferred income tax assets, current		—		—		—		—
Allowance for deferred income tax assets, noncurrent		159,694		—		57,411		102,283

F-69

SILICONWARE PRECISION INDUSTRIES CO., LTD. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(EXPRESSED IN THOUSANDS OF DOLLARS, EXCEPT EARNINGS PER SHARE)

(13) Recent Accounting Pronouncements

U.S. GAAP

A. In December 2010, the Financial Accounting Standards Board (FASB) issued amended guidance on two-step goodwill impairment test. If there is an entity with reporting units with zero or negative carrying amounts, an entity is still required to perform Step 2 of the goodwill impairment test if it is more likely than not that a goodwill impairment exists by considering whether there are any adverse qualitative factors to indicating such impairment existed. The amendments are effective for fiscal years, and interim periods within those years, beginning after December 15, 2010 for public entities. The Company does not expect any significant impact on the adoption of this guidance.

B. In order to provide financial statements users with greater transparency about an entity’s financing receivables, the FASB issued amendments in July 2010 to require an entity to provide more disclosures, including the nature of credit risk inherent in financing receivables, how the risk is analyzed and assessed in arriving at the allowance for credit losses and the changes and reasons for changes in the allowance for credit losses. The amendments are effective for interim and annual reporting periods ended on or after December 15, 2010 for public entities. The adoption did not have any material impact on the Company’s consolidated financial statements.

C. In January 2010, the FASB issued amended guidance concerning recurring and nonrecurring fair value measurements. All entities are required new disclosures on the transfers of assets and liabilities between Level 1 and Level 2 in the fair value measurement hierarchy. In addition, it requires a gross presentation of activity within the Level 3, including purchases, sales, issuance, and settlements separately. The amendments are effective for interim and annual periods beginning after December 15, 2009, except for the gross presentation of the Level 3 rollforward, which will become effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. Such adoption is anticipated to have additional disclosures by the Company.

D. In June 2009, the FASB issued authoritative guidance on the consolidation of variable interest entities (VIE), which is effective for interim and annual periods beginning after November 15, 2009. The new guidance for VIEs eliminates the quantitative approach previously required for determining the primary beneficiary of a VIE and requires ongoing qualitative reassessments of whether an enterprise is the primary beneficiary. The guidance does not have significant impact on the Company’s consolidated financial statements as of and for the year ended December 31, 2010.

R.O.C. GAAP

In April 2009, the R.O.C. Accounting Research and Development Foundation issued R.O.C. SFAS No. 41, “Disclosure for Operating Segments Information”, which provides guidance on the identification of operating segments and required disclosure for operating segments information. This statement is effective for fiscal years beginning on or after January 1, 2011. The Company does not expect any significant impact on the adoption of this statement.

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