China XD Plastics (CXDC) 10-K 16 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Mar. 10, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Entity Registrant Name	China XD Plastics Co Ltd
Entity Central Index Key	1353970
Current Fiscal Year End Date	-19
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2014
Entity Filer Category	Accelerated Filer
Entity Units Outstanding		49,151,796
Entity Public Float			$140,630,319
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$45,456,612	$95,545,904
Restricted cash	12,545,772	13,708,971
Time deposits	238,532,702	281,343,641
Accounts receivable, net of allowance for doubtful accounts	203,998,138	282,320,819
Amounts due from a related party	220,262	225,752
Inventories	249,797,244	144,885,688
Prepaid expenses and other current assets	11,253,828	8,418,143
Total current assets	761,804,558	826,448,918
Property, plant and equipment, net	318,324,600	233,841,735
Land use rights, net	11,896,542	12,457,001
Prepayments to equipment suppliers	182,259,578	1,332,742
Other non-current assets	25,499,744	1,826,232
Total assets	1,299,785,022	1,075,906,628
Current liabilities:
Total short-term loans, including current portion of long-term bank loans	99,735,422	314,682,620
Bills payable	43,389,928	25,604,176
Accounts payable	152,073,014	122,457,396
Income taxes payable	3,269,115	18,631,698
Warrants liability		1,063,401
Accrued expenses and other current liabilities	24,484,583	55,893,004
Total current liabilities	322,952,062	538,332,295
Long-term bank loans, excluding current portion	174,274,446
Notes payable	148,617,057
Income taxes payable	14,025,825	8,224,057
Deferred income tax liabilities	16,951,551	19,428,706
Total liabilities	676,820,941	565,985,058
Redeemable Series D convertible preferred stock	97,576,465	97,576,465
Stockholders' equity:
Series B preferred stock	100	100
Common stock, US$0.0001 par value, 500,000,000 shares authorized, 49,172,796 shares and 47,896,133 shares issued, 49,151,796, shares and 47,875,133 shares outstanding as of December 31, 2014 and 2013, respectively	4,916	4,789
Treasury stock, 21,000 shares at cost	-92,694	-92,694
Additional paid-in capital	80,875,787	76,341,659
Retained earnings	431,823,706	311,047,337
Accumulated other comprehensive income	12,775,801	25,043,914
Total stockholders' equity	525,387,616	412,345,105
Commitments and contingencies
Total liabilities, redeemable convertible preferred stocks and stockholders' equity	$1,299,785,022	$1,075,906,628

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS [Abstract]
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	49,172,796	47,896,133
Common stock, shares outstanding	49,151,796	47,875,133
Treasury shares, shares	21,000	21,000

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Revenues	$1,110,685,692	$1,050,816,364	$599,818,968
Cost of revenues	-888,227,868	-827,419,861	-456,011,715
Gross profit	222,457,824	223,396,503	143,807,253
Selling expenses	-728,232	-243,975	-273,289
General and administrative expenses	-20,564,820	-16,284,528	-10,069,273
Research and development expenses	-29,434,680	-21,258,549	-21,586,074
Total operating expenses	-50,727,732	-37,787,052	-31,928,636
Operating income	171,730,092	185,609,451	111,878,617
Interest income	10,984,980	6,788,243	4,601,336
Interest expense	-41,518,878	-15,250,780	-4,627,014
Foreign currency exchange gains (losses)	-1,938,807	2,519,486	561,829
Losses on foreign currency forward contracts	-1,067,162
Change in fair value of embedded derivative liability			610
Change in fair value of warrants liability	-1,871,074	-54,651	2,854,177
Government grant	2,723,495	924,216	114,385
Total non-operating income (expenses), net	-32,687,446	-5,073,486	3,505,323
Income before income taxes	139,042,646	180,535,965	115,383,940
Income tax expense	-18,266,277	-46,697,120	-29,516,193
Net income	120,776,369	133,838,845	85,867,747
Earnings per common stock:
Basic and diluted	$1.85	$2.08	$1.35
Net income	120,776,369	133,838,845	85,867,747
Other comprehensive income (loss)
Foreign currency translation adjustment, net of nil income taxes	-12,268,113	10,385,656	3,180,381
Comprehensive income	$108,508,256	$144,224,501	$89,048,128

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $)	Total	Series B Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Balance at Dec. 31, 2011	$173,921,551	$100	$4,754	($92,694)	$71,190,659	$91,340,855	$11,477,877
Balance, shares at Dec. 31, 2011		1,000,000	47,527,367
Net income	85,867,747					85,867,747
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes	3,180,381						3,180,381
Stock based compensation	1,393,255				1,393,255
Dividends to redeemable Series C Convertible preferred stockholders	-110					-110
Vesting of unvested shares			4		-4
Vesting of unvested shares, shares			36,405
Balance at Dec. 31, 2012	264,362,824	100	4,758	-92,694	72,583,910	177,208,492	14,658,258
Balance, shares at Dec. 31, 2012		1,000,000	47,563,772
Net income	133,838,845					133,838,845
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes	10,385,656						10,385,656
Stock based compensation	3,757,780				3,757,780
Vesting of unvested shares			31		-31
Vesting of unvested shares, shares			311,361
Balance at Dec. 31, 2013	412,345,105	100	4,789	-92,694	76,341,659	311,047,337	25,043,914
Balance, shares at Dec. 31, 2013		1,000,000	47,875,133
Net income	120,776,369					120,776,369
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes	-12,268,113						-12,268,113
Stock based compensation	1,003,040				1,003,040
Exercise of Series A investor warrants	3,531,215		60		3,531,155
Exercise of Series A investor warrants, shares			602,458
Vesting of unvested shares			67		-67
Vesting of unvested shares, shares			674,205
Balance at Dec. 31, 2014	$525,387,616	$100	$4,916	($92,694)	$80,875,787	$431,823,706	$12,775,801
Balance, shares at Dec. 31, 2014		1,000,000	49,151,796

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income	$120,776,369	$133,838,845	$85,867,747
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Net provision (reversal) for doubtful accounts	-35,849	-2,293	34,491
Depreciation and amortization	22,916,893	21,420,723	10,705,037
Stock-based compensation	1,003,040	3,757,780	1,393,255
Change in fair value of embedded derivative liability			-610
Change in fair value of warrants liability	1,871,074	54,651	-2,854,177
Amortization of discount and issuance cost of the Notes	898,634
Change in fair value of forward contract	2,435
Foreign currency exchange losses (gains)	2,051,596	-2,519,486	-561,829
Losses on disposals of property, plant and equipment	10,292	4,817
Deferred income tax benefit	-2,018,757	-1,880,228	-1,574,995
Change in operating assets and liabilities:
Restricted cash	-6,427,562	6,082,662	-827,585
Accounts receivable	72,318,976	-132,230,006	-97,157,176
Amounts due from a related party		6,534	-137,904
Inventories	-109,198,972	-63,358,285	-32,494,523
Prepaid expenses and other current assets	-3,719,794	-2,134,119	6,830,122
Other non-current assets		1,435	96,741
Bills payable	18,538,133	15,676,880	-12,998,869
Accounts payable	32,823,457	113,429,086	6,576,382
Income taxes payable	-8,996,712	17,835,057	2,604,368
Accrued expenses and other current liabilities	5,935,116	5,662,472	3,044,530
Net cash provided by (used in) operating activities	148,748,369	115,646,525	-31,454,995
Cash flows from investing activities:
Purchase of time deposits	-626,994,741	-460,292,902	-374,481,497
Proceeds from maturity of time deposits	663,216,581	231,849,776	327,121,555
Purchases of and deposits for property, plant and equipment	-334,092,742	-21,461,391	-97,492,169
Purchase of land use rights	-1,460,754
Net cash used in investing activities	-299,331,656	-249,904,517	-144,852,111
Cash flows from financing activities:
Proceeds from bank borrowings	797,615,642	503,843,151	243,045,097
Repayment of bank borrowings	-831,932,534	-358,190,868	-114,369,501
Redemption of redeemable Series C convertible preferred stock			-1,829
Proceeds from Senior Notes Payable	148,396,175
Payment of issuance costs of the Notes	-4,718,452
Proceeds from exercise of Series A investor warrants	596,740
Dividends paid to Series C convertible preferred stockholders			-110
Release of restricted cash as collateral for bank borrowings	10,022,398	5,733,852
Placement of restricted cash as collateral for bank borrowings	-20,612,868	-8,173,789	-4,775,204
Net cash provided by financing activities	99,367,101	143,212,346	123,898,453
Effect of foreign currency exchange rate changes on cash and cash equivalents	1,126,894	2,768,948	748,869
Net increase (decrease) in cash and cash equivalents	-50,089,292	11,723,302	-51,659,784
Cash and cash equivalents at beginning of year	95,545,904	83,822,602	135,482,386
Cash and cash equivalents at end of year	45,456,612	95,545,904	83,822,602
Supplemental disclosure of cash flow information:
Interest paid, net of capitalized interest	33,537,952	15,413,648	3,618,679
Income taxes paid	29,288,894	30,742,291	28,486,820
Non-cash investing and financing activities:
Accrual for purchase of equipment		21,398,595	36,450,344
Accrual for issuance cost of the Notes	$202,712

Description_of_business_and_si

Description of business and significant concentrations and risks	12 Months Ended
	Dec. 31, 2014
Description Of Business And Significant Concentrations And Risks [Abstract]
Description of business and significant concentrations and risks	Note 1 – Description of business and significant concentrations and risks
	China XD Plastics Company Limited (“China XD”) is a holding company that is incorporated in the U.S. State of Nevada.  China XD and its subsidiaries (collectively referred to hereinafter as the “Company”), is primarily engaged in the research and development, production and sales of modified and engineering plastics products. The plastics products, which are manufactured by the Company, are primarily for use in the fabrication of automobile parts and components and secondarily for applications in high-speed railway, airplanes and ships and consist of the following major products categories: Acrylonitrile Butadiene Styrene (“ABS”), Polyamid6 (“PA6”), Polyamid66 (“PA66”), Polyformaldehyde (“POM”), Polypropylene (“PP”), Polyphenylene Oxide (“PPO”), Plastic Alloy, Polyphenylene Sulfide (“PPS”), Poly Imide (“PI”), Poly Ether Ether Ketone (“PEEK”), and Polylactide Acid (“PLA”).
	The Company's operations are primarily conducted through its subsidiaries in the People's Republic of China (“PRC”) and Dubai, United Arab Emirates (“UAE”).  The Company's other subsidiaries in the US, the British Virgin Islands (“BVI”) and Hong Kong Special Administrative Region (“SAR”), do not have significant operations.
	Sales concentration
	The Company sells its products primarily through approved distributors in the PRC. To a lesser extent, the Company also sells its products to an overseas customer.  The Company's sales are highly concentrated. Sales to distributors and end customer, which individually exceeded 10% of the Company's revenues for the years ended December 31, 2014, 2013 and 2012, are as follows:
	(in millions, except percentage)	Years Ended December 31,
		2014						2013					2012
		US$			%			US$		%			US$		%
	Distributor A, located in PRC		176.6			15.9	%		209.4		19.9	%		196.1		32.7	%
	Distributor B, located in PRC		139.8			12.6	%		138.1		13.1	%		88.5		14.8	%
	Distributor C, located in PRC		138.5			12.5	%		63.8		6.1	%		-		-	%
	Distributor D, located in PRC		136.4			12.3	%		250.7		23.9	%		61.6		10.3	%
	Distributor E, located in PRC		134			12.1	%		136		12.9	%		85.4		14.2	%
	Direct customer F, located in ROK		140.1			12.6	%		-		-			-		-
	Total		865.4			78	%		798		75.9	%		431.6		72	%
	The Company expects revenues from these distributors and the customer to continue to represent a substantial portion of its revenue in the future. Any factors adversely affecting the automobile industry in the PRC and ROK or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.
	Purchase concentration of raw materials and equipment
	The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. The Company purchases substantially all of its raw materials through eight distributors.  Raw material purchases from these eight suppliers, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 88%, 61%, 52% of the Company's total raw material purchases for the years ended December 31, 2014, 2013 and 2012, respectively. Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.
	The Company purchased equipment from two equipment distributors, which accounted for 99.6%, 34.6% and 99.9% of the Company's total equipment purchases for the years ended December 31, 2014, 2013 and 2012, respectively. Management believes that other suppliers could provide similar equipment on comparable terms.  A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which could adversely affect the Company's business, financial position and results of operations.  The majority owner of one of the major equipment distributors that supplied approximately 1.9%, 34.6% and 99.9% of the Company's total equipment purchases is also the majority owner of a major raw material supplier that supplied approximately 0.4%, 13% and 22% of the Company's total raw material purchases for the years ended December 31, 2014, 2013 and 2012, respectively.  In addition, the majority owner of the equipment distributor is also the majority owner of sales Distributor E presented above.
	Cash concentration
	Cash and cash equivalents, restricted cash and time deposits maintained at banks consist of the following:
		December 31,
		2014		2013
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC		311,377,750		389,522,815
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.		770,704		84,011
	Financial Institutions in the PRC		17,139		-
	Financial Institution in Hong Kong Special Administrative Region (“Hong Kong SAR”)		1,366,224		847,559
	Financial Institution in Macau Special Administrative Region (“Macau SAR”)		47,868		-
	Financial Institution in Dubai, United Arab Emirates (“UAE”)		481,179		-
	Euro denominated bank deposits with:
	Financial institution in Hong Kong SAR		83,017		143,890
	HK dollar denominated bank deposits with:
	Financial institution in Hong Kong		6,723		-
	Dirham denominated bank deposits with:
	Financial institution in Dubai, UAE		112,815		-
	The bank deposits with financial institutions in the PRC are not insured by any government authority.  The bank deposits with financial institutions in the HK SAR are insured by the government authority up to HK$500,000. The bank deposits with financial institutions in the Macau SAR are insured by the government authority up to MOP$500,000.To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC, HK SAR and Macau SAR with acceptable credit rating.

Summary_of_significant_account

Summary of significant accounting policies	12 Months Ended
	Dec. 31, 2014
Summary of significant accounting policies [Abstract]
Summary of significant accounting policies	Note 2 – Summary of significant accounting policies
	(a) Basis of Presentation
	The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).
	(b) Consolidation
	The accompanying consolidated financial statements include the financial statements of China XD and its wholly-owned subsidiaries.  All significant intercompany transactions and balances have been eliminated upon consolidation.
	(c) Use of Estimates
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.  Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories, the useful lives of property, plant and equipment, the collectability of accounts receivable, the fair values of stock-based compensation awards, derivative liabilities and the accruals for tax uncertainties and other contingencies.  The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
	(d) Foreign Currency
	The Company's reporting currency is the U.S. dollar (US$). The functional currency of China XD Plastics and its subsidiaries in the United States, BVI, Hong Kong and Dubai, UAE is the US$. The functional currency of China XD's subsidiaries in the PRC is Renminbi (RMB).
	Transactions denominated in currencies other than the functional currency are translated into the functional currency at the exchange rates prevailing at the date of the transaction.  Monetary assets and liabilities denominated in foreign currencies are translated into the functional currency using the applicable exchange rates at the balance sheet date.  The resulting exchange differences are recorded in foreign currency exchange gains (losses) in the consolidated statements of comprehensive income.
	Assets and liabilities of subsidiaries with functional currencies other than US$ are translated into US$ using the exchange rate on the balance sheet date.  Revenues and expenses are translated into US$ at average rates prevailing during the reporting period. The differences resulting from such translation are recorded as a separate component of accumulated other comprehensive income within shareholders' equity.
	Since the RMB is not a fully convertible currency, all foreign exchange transactions involving RMB must take place either through the People's Bank of China or other institutions authorized to buy and sell foreign exchange.
	(e) Cash and cash equivalents, time deposits and restricted cash
	Cash and cash equivalents consist of cash on hand, cash in bank and interest-bearing certificates of deposit with an initial term of three months or less when purchased.
	Time deposits represent certificates of deposit with initial terms of six or twelve months when purchased.  As of December 31, 2014 and 2013, the Company's time deposits bear a weighted average interest rate of 3.0% and 3.1% per annum, respectively.
	Cash that is restricted as to withdrawal or usage is reported as restricted cash in the consolidated balance sheets and is not included as cash and cash equivalents in the consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for bills payable relating to purchases of raw materials are reported as restricted cash and amounted to US$11,868,855 and US$3,964,518 as of December 31, 2014 and 2013, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company. Short-term bank deposits that are pledged as collateral for letter of credit relating to purchases of raw materials are reported as restricted cash and amounted to US$676,917 and US$237,871 as of December 31, 2014 and 2013, respectively. The cash will be available for use by the Company 90 days from the issuance of the letter of credit. The cash flows from the pledged bank deposits, which relate to purchases of raw materials, are reported within cash flows from operating activities in the consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for short-term bank borrowings are reported as restricted cash and amounted to nil and US$9,506,582 as of December 31, 2014 and 2013, respectively. Long-term bank deposits that are pledged as collateral for issuance of letter of guarantee are reported as other non-current assets and amounted to US$17,728,782 and nil as of December 31, 2014 and 2013, respectively. The cash flows from such bank deposits are reported within cash flows from financing activities in the consolidated statements of cash flows.
	(f) Accounts Receivable
	Accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. In establishing the required allowance, management considers historical losses, the amount of accounts receivables in dispute, the accounts receivables aging and the customers' payment patterns.  Account balances are written off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote.  The Company does not have any off-balance-sheet credit exposure related to its customers.
	(g) Inventories
	Inventories are stated at the lower of cost or market. Cost is determined using the weighted average cost method.  Work-in-progress and finish goods comprise direct materials (including purchasing, receiving and inspection costs), direct labor and an allocation of related manufacturing overhead based on normal operating capacity.
	(h) Long-lived Assets
	Property, plant and equipment
	Property, plant and equipment are initially recorded at cost.  Depreciation is calculated on the straight-line method over the estimated useful lives of the assets.  The estimated useful lives of property, plant and equipment are as follows:
		Estimated
		Useful Life
	Workshops and buildings	39 years
	Machinery, equipment and furniture	5-10 years
	Motor vehicles	5 years
	An appropriate allocation of depreciation expense of property, plant and equipment attributable to manufacturing activities base on normal capacity is capitalized as part of the cost of inventory, and expensed in cost of revenues when the inventory is sold.  Costs incurred in the construction of property, plant and equipment, including an allocation of interest expense incurred, are capitalized and transferred into their respective asset category when the assets are ready for their intended use, at which time depreciation commences. Ordinary maintenance and repairs are charged to expenses as incurred, while replacements and betterments are capitalized.  When items are retired or otherwise disposed of, income is charged or credited for the difference between net book value of the item disposed and proceeds realized thereon.
	Interest cost incurred in the construction of new facilities is capitalized and transferred out of construction in progress and into their respective assets categories when the assets are ready for their intended use, at which time depreciation commences.
	Land Use Rights
	A land use right in the PRC represents an exclusive right to occupy, use and develop a piece of land during the contractual term of the land use right. The cost of land use right is usually paid in one lump sum at the date the right is granted. The prepayment usually covers the entire duration period of the land use right. The lump sum advance payment is capitalized and recorded as land use right and then charged to expense on a straight-line basis over the period of the right, which is normally 50 years.
	Amortization expense of land use rights was US$259,310, US$224,587 and US$79,404 for the years ended December 31, 2014, 2013 and 2012, respectively, and is included in general and administrative expenses.
	(i) Impairment of Long-lived Assets
	Long-lived assets, such as property, plant and equipment, and land use rights, are reviewed for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable.  Recoverability of a long-lived asset or asset group to be held and used is measured by a comparison of the carrying amount of an asset or asset group to the estimated undiscounted future cash flows expected to be generated by the asset or asset group.  If the carrying value of an asset or asset group exceeds its estimated undiscounted future cash flows, an impairment charge is recognized by the amount that the carrying value exceeds the estimated fair value of the asset or asset group.  Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and third party independent appraisals, as considered necessary.  Assets to be disposed are reported at the lower of carrying amount or fair value less costs to sell, and are no longer depreciated.
	No impairment of long-lived assets was recognized for any of the years presented.
	(j) Derivative Financial Instruments
	The Company recognizes all derivative instruments as either assets or liabilities at their respective fair values. Changes in the fair value of derivative instruments not designated for hedge accounting are recognized in earnings.
	(k) Revenue Recognition
	The Company sells its products primarily to approved distributors.  Revenue is recognized when all of the following conditions are met: persuasive evidence of an arrangement exists, delivery of the products has occurred or services have been rendered, the price is fixed or determinable and collectibility is reasonably assured.  These criteria as they relate to each of the following major revenue generating activities are described below.
	Products sales
	For sales in PRC, acceptance of delivery of the products by the distributors is evidenced by goods receipt notes signed by the distributors' customers (or end users). The distributors accept the products at the time they are delivered to the distributors' customers (or end customers).  Delivery acceptance is evidenced by signed goods receipt notes. The Company has no remaining obligations after the distributors' acceptance of the products. Under the terms of the contracts or purchase orders between the Company and the distributors, the risks and rewards of ownership of the products is transferred to the distributor upon the signing of the goods receipt notes and the distributor has no rights to return the products (other than for defective products). For sales to ROC, delivery of the products occurs at the point in time the product is delivered to the named port of shipment, which is when the risks and rewards of ownership are transferred to the customer. For the years ended December 31, 2014, 2013 and 2012, there were no sales returns from the customers.
	The selling price, which is specified in the sales contracts or purchase orders, is fixed. Under the terms of the sales contract, upon the sale of the products to the distributors and the signing of the good receipts notes, the Company has the legal enforceable right to receive full payment of the sales price. The distributors' obligation to pay the Company is not dependent on the distributors selling the products or collecting cash from their customers (or end customers).
	The Company's sales are net of value added tax (“VAT”) and business tax collected on behalf of tax authorities in respect of product sales. VAT and business tax collected from customers, net of VAT paid for purchases, is recorded as a liability in the balance sheet until it is paid to the tax authorities.
	Service revenue
	The Company used to provide technical assistance and consultation services to manufacturing companies prior to 2014.
	Revenue from technical support was recognized as the services were performed, which was evidenced by signed customer acceptance forms on a monthly basis.  Service revenue was recorded, net of business tax and surcharges, which was levied on the Company's service revenues generated in the PRC at the rate of 5.6%.
	(l) Cost of revenues
	Cost of revenues represents costs of raw materials (including purchasing, receiving and inspection costs), packaging materials, labor, utilities, depreciation and amortization of manufacturing facilities and warehouses, handling costs, outbound freight and inventory write-down. Depreciation and amortization of manufacturing facilities and warehouses attributable to manufacturing activities is capitalized as part of the cost of inventory, and expensed in costs of revenues when the inventory is sold.
	(m) Selling, general and administrative expenses
	Selling expenses represents primarily costs of payroll, benefits, commissions for sales representatives and advertising expenses.  General and administrative expenses represents primarily payroll and benefits costs for administrative employees, rent and operating costs of office premises, depreciation and amortization of office facilities, and other administrative expenses.
	(n) Research and Development Expense
	Research and development costs are expensed as incurred.
	(o) Government Grants
	Government grants are recognized when there is reasonable assurance that the Company will comply with the conditions attaching to them and the grants will be received. Government grants for the purpose of giving immediate financial support to the Company with no future related costs are recognized as other income in the Company's consolidated statements of comprehensive income.  Government grants that compensate the acquisition cost of an asset are deducted from the carrying amount of the asset and effectively recognized in profit or loss over the useful life of the asset by way of reduced depreciation expense.
	(p) Income Taxes
	Income taxes are accounted for under the asset and liability method.  Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and tax operating loss and tax credit carryforwards. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the periods in which those temporary differences are expected to be recovered or settled.  The effect of a change in tax rates or tax laws on deferred income tax assets and liabilities is recognized in the consolidated statements of comprehensive income in the period the change in tax rates or tax laws is enacted. A valuation allowance is provided to reduce the carrying amount of deferred income tax assets if it is considered more likely than not that some portion or all of the deferred income tax assets will not be realized.
	The Company recognizes in the consolidated financial statements the impact of a tax position, if that position is more likely than not of being sustained upon examination, based on the technical merits of the position.  Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized.  Changes in recognition or measurement are reflected in the period in which the change in judgment occurs.  The Company has elected to classify interest and penalties related to unrecognized tax benefits, if and when required, as part of interest expense, and general and administration expenses, respectively in the consolidated statements of comprehensive income.
	(q) Bills Payable
	Bills payable represent bills issued by financial institutions to the Company's raw material suppliers. The Company's suppliers receive payments from the financial institutions upon maturity of the bills and the Company is obliged to repay the face value of the bills to the financial institutions.
	(r) Employee Benefit Plans
	Pursuant to relevant PRC regulations, the Company is required to make contributions to various defined contribution plans organized by municipal and provincial PRC governments. The contributions are made for each PRC employee at rate of approximately 40% on a standard salary base as determined by local social security bureau. Contributions to the defined contribution plans are charged to the consolidated statements of comprehensive income when the related service is provided. For the years ended December 31, 2014, 2013 and 2012, the costs of the Company's contributions to the defined contribution plans amounted to US$1,555,471, US$1,024,728 and US$623,251, respectively.
For the years ended December 31, 2014 2013 and 2012, 78%, 80% and 60% of costs of employee benefits were recorded in general and administration expenses, respectively, with the remaining portion of costs of employee benefits in selling expenses, research and development expenses and cost of revenues each year.
The Company has no other obligation for the payment of employee benefits associated with these plans beyond the contributions described above.
(s) Stock Based Compensation
The Company measures the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award and recognizes the cost over the period during which the employee is required to provide service in exchange for the award, which generally is the vesting period. The amount of cost recognized is adjusted to reflect any expected forfeitures prior to vesting.  The Company recognizes compensation cost for an award with only service conditions that has a graded vesting schedule on a straight-line basis over the requisite service period for the entire award, provided that the cumulative amount of compensation cost recognized at any date at least equals the portion of the grant-date value of such award that is vested at that date.
(t) Commitments and Contingencies
In the normal course of business, the Company is subject to loss contingencies, such as legal proceedings and claims arising out of its business, that cover a wide range of matters, including, among others, government investigations, shareholder lawsuits, product and environmental liability, and non-income tax matters.  An accrual for a loss contingency is recognized when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated.
(u) Earnings Per Share
Basic earnings per share (“EPS”) is computed by dividing net income attributable to common stockholders by the weighted average number of common stock outstanding during the year using the two-class method.  Under the two-class method, net income attributable to common stockholders is allocated between common stock and other participating securities based on participating rights in undistributed earnings. Nonvested shares, redeemable Series C and Series D convertible preferred stock are participating securities since the holders of these securities participate in dividends on the same basis as common stockholders.  Diluted EPS is calculated by dividing net income attributable to common stockholders as adjusted for the effect of dilutive common stock equivalent, if any, by the weighted average number of common stock and dilutive common stock equivalent outstanding during the year.  Potential dilutive securities are not included in the calculation of diluted earnings per share if the impact is anti-dilutive.
(v) Segment reporting
The Company uses the management approach in determining reportable operating segments.  The management approach consider the internal reporting used by the Company's chief operating decision maker for making operating decisions about the allocation of resources of the segment and the assessment of its performance in determining the Company's reportable operating segments. Management has determined that the Company has one operating segment, which is the modified plastics segment.
(w) Fair Value Measurements
The Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible. The Company determines fair value based on assumptions that market participants would use in pricing an asset or liability in the principal or most advantageous market. When considering market participant assumptions in fair value measurements, the following fair value hierarchy distinguishes between observable and unobservable inputs, which are categorized in one of the following levels:
-       Level 1 Inputs: Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date.
-       Level 2 Inputs: Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability.
-       Level 3 Inputs: Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at measurement date.
The level in the fair value hierarchy within which a fair value measurement in its entirety falls is based on the lowest level input that is significant to the fair value measurement in its entirety.
-	The fair value of restricted cash and time deposits as of December 31, 2014 and 2013 are categorized as Level 2 measurement.
-	The fair value of the warrants liability as of December 31, 2013 is categorized as Level 3 measurement.
-	The fair value of foreign currency forward contracts as of December 31, 2014 is categorized as Level 3 measurement.
Except for the foreign currency forward contracts and warrants liability, which was measured at fair value on a recurring basis as of December 31, 2014 and 2013, the Company did not have any financial assets and liabilities or nonfinancial assets and liabilities that are measured and recognized at fair value on a recurring or nonrecurring basis as of December 31, 2014 and 2013.  Management used the following methods and assumptions to estimate the fair values of financial instruments at the balance sheet dates:
-       Short-term financial instruments, including cash and cash equivalents, restricted cash, time deposits, accounts receivable, amounts due from a related party, short-term bank loans, bills payable, accounts payable and accrued expenses and other current liabilities- carrying amounts approximate fair values because of the short maturity of these instruments.
-       Long-term bank loans-fair value is based on the amount of future cash flows associated with each loan discounted at the Company's current borrowing rate for similar debt instruments of comparable terms. The carrying value of the long-term bank loans approximate their fair values as the long-term bank loans carry interest rates which approximate rates currently offered by the Company's banks for similar debt instruments of comparable maturities.
-       Notes payable-fair values of the Company's notes payable are estimated based on quoted market prices which are categorized as Level 1 measurement in the fair value hierarchy. As of December 31, 2014, the carrying amount and estimated fair value of the notes payable were US$148,617,057 and US$152,344,500, respectively.
-       Derivative liabilities on warrants liabilities- fair values are determined using an option-pricing model which considers the following significant inputs: the Company's stock price, risk-free interest rate and expected volatility of the Company's stock price over the term of the derivative liabilities.
-       Derivative liabilities on foreign currency forward contracts- fair values are determined using a discount cash flow model, which discounts the difference between the forward contract exchange rate from the quoted curve and the contract rate multiplied by the notional amounts. It considers the following significant inputs: risk-free rate and foreign exchange rate.
(x) Recently Issued Accounting Standards
The Financial Accounting Standards Borad issued Accounting Standards Update ( "ASU") No. 2014-09, Revenue from Contracts with Customers, in May 2014. ASU 2014-09 requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. An entity should also disclose sufficient quantitative and qualitative information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The new standard is effective for annual reporting periods beginning after December 15, 2017. The Company will implement the provisions of ASU 2014-09 as of January 1, 2018. The Company has not yet determined the impact of the new standard on its current policies for revenue recognition.

Accounts_receivable

Accounts receivable	12 Months Ended
	Dec. 31, 2014
Accounts receivable [Abstract]
Accounts receivable	Note 3 – Accounts receivable
	Accounts receivable consists of the following:
		December 31,
		2014		2013
		US$		US$
	Accounts receivable	204,108,050		282,466,580
	Allowance for doubtful accounts	(109,912	)	(145,761		)
	Accounts receivable, net	203,998,138		282,320,819
	As of December 31, 2014 and 2013, the accounts receivable balances also include notes receivable in the amount of US$921,907 and US$7,481,629, respectively. As of December 31, 2014 and 2013, US$50,473,063 and US$133,778,940 respectively of accounts receivable are pledged for the short-term bank loans.
	The movements of the allowance for doubtful accounts are as follows:
		Year ended December 31,
		2014			2013
		US$			US$
	Balance at the beginning of the year	(145,761		)	(148,054		)
	Reversal of bad debt allowance	35,849			2,293
	Balance at the end of the year	(109,912		)	(145,761		)

Inventories

Inventories	12 Months Ended
	Dec. 31, 2014
Inventories [Abstract]
Inventories	Note 4 – Inventories
	Inventories consist of the following:
		December 31,
		2014		2013
		US$		US$
	Raw materials		241,853,814		135,120,514
	Work in progress		207,181		2,551,621
	Finished goods		7,736,249		7,213,553
	Total inventories		249,797,244		144,885,688
	There were no write down of inventories during the years ended December 31, 2014, 2013 and 2012.

Prepaid_expenses_and_other_cur

Prepaid expenses and other current assets	12 Months Ended
	Dec. 31, 2014
Prepaid expenses and other current assets [Abstract]
Prepaid expenses and other current assets	Note 5 – Prepaid expenses and other current assets
	Prepaid expenses and other current assets consist of the following:
		December 31,
		2014		2013
		US$		US$
	Advances to suppliers		168,614		920,277
	Value added taxes receivables		6,407,547		3,924,767
	Interest receivable		3,351,672		2,405,666
	Others		1,325,995		1,167,433
	Total prepaid expenses and other current assets		11,253,828		8,418,143
	Interest receivable mainly represents interest income accrued from time deposits and restricted cash.  Others mainly include other prepaid expenses and staff advances.

Property_plant_and_equipment_n

Property, plant and equipment, net	12 Months Ended
	Dec. 31, 2014
Property, plant and equipment, net [Abstract]
Property, plant and equipment, net	Note 6 – Property, plant and equipment, net
	Property, plant and equipment consist of the following:
		December 31,
		2014			2013
		US$			US$
	Machinery, equipment and furniture		209,509,700			209,921,805
	Motor vehicles		1,854,985			1,580,877
	Workshops and buildings		79,009,346			62,217,256
	Construction in progress		93,970,716			4,807,666
	Total property, plant and equipment		384,344,747			278,527,604
	Less: accumulated depreciation		(66,020,147	)		-44,685,869
	Property, plant and equipment, net		318,324,600			233,841,735
	Depreciation expense on property, plant and equipment was allocated to the following expense items:
		Years Ended December 31,
		2014			2013		2012
		US$			US$		US$
	Cost of revenues		19,407,668			18,578,088		9,363,351
	General and administrative expenses		1,155,419			958,976		232,576
	Research and development expenses		2,094,496			1,659,072		1,029,706
	Total depreciation expense		22,657,583			21,196,136		10,625,633
	The Company capitalized US$113,317, nil and nil of interest costs as a component of the cost of construction in progress for the years ended December 31, 2014, 2013 and 2012 respectively.

Prepayments_to_equipment_suppl

Prepayments to equipment suppliers	12 Months Ended
	Dec. 31, 2014
Prepayments to equipment suppliers [Abstract]
Prepayments to equipment suppliers	Note 7 - Prepayments to equipment suppliers
	On March 8, 2013, Xinda Holding (HK) entered into an investment agreement with Nanchong Government, pursuant to which Xinda Holding (HK) will invest RMB1.8 billion (equivalent to US$290.1 million) in property, plant and equipment and approximately RMB0.6 billion (equivalent to US$96.7 million) in working capital, for the construction of the Sichuan plant. In December 2013, the Company entered into an equipment purchase contract with Harbin Jiamu Import & Export Trading Co., Ltd ("Jiamu") for a total consideration of RMB1,629.3 million (equivalent to US$262.6 million) to purchase 70 production lines. Pursuant to the contract, during the year ended December 31, 2014, the Company paid 65% of the total consideration i.e. RMB1,059.1 million (equivalent to US$170.7 million) as prepayments. In addition, the Company entered into a testing equipment purchase contract with Jiamu for a total consideration of RMB89.7 million (equivalent to US$14.5 million). During the year ended December 31, 2014, the Company paid 80% of the total consideration, i.e. RMB71.8 million (equivalent to US$11.6 million) as prepayments.

Foreign_currency_forward_contr

Foreign currency forward contracts	12 Months Ended
	Dec. 31, 2014
Foreign currency forward contracts [Abstract]
Foreign currency forward contracts	Note 8 - Foreign currency forward contracts
	On March 14, 2014, the Company entered into a foreign currency forward contract with HSBC Bank (China) Company Ltd. (the “HSBC”), pursuant to which the Company would pay US$80 million to HSBC in exchange for RMB492 million on June 18, 2014.  On June 18, 2014, the Company paid HSBC US$1.1 million to settle the contract because the foreign exchange rate of USD had appreciated against RMB during the period of the forward contract.  The Company entered into another foreign currency forward contract with HSBC on June 18, 2014, pursuant to which the Company would pay US$50 million in exchange for RMB315 million on June 23, 2015.  Changes in fair value of the foreign currency forward contract dated June 18, 2014 amounted to US$2.4 thousand from the date of its inception to December 31, 2014 and was recognized in earnings because it did not qualify or was designated for hedge accounting.
	During the years ended December 31, 2014, the Company recognized loss on foreign currency forward contracts in the amount of US$1.1 million.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2014
Borrowings [Abstract]
Borrowings	Note 9 – Borrowings
	(a)  Current
				December 31,
				2014			2013
				US$			US$
	Unsecured loans				47,223,028			169,027,897
	Loans secured by accounts receivable				40,292,686			100,434,445
	Loans secured by bank deposits				-			36,960,867
	Current portion of long-term bank loans (note b)				12,219,708			-
	Total short-term bank loans, including current portion of long-term bank loans	(i)			99,735,422			306,423,209
	Interest-free loan secured by land use rights	(ii)			-			8,259,411
	Total short-term loans, including current portion of long-term bank loans				99,735,422			314,682,620
	(i)	As of December 31, 2014 and 2013, the Company's short-term bank loans (including the current portion of long-term bank loans) bear a weighted average interest rate of 5.7% and 5.9% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms.
	(ii)	The Company obtained an interest-free loan in the amount of RMB50.0 million from a company affiliated with the People's Government of Shunqing District, Nanchong City, Sichuan Province (“Shunqing Government”). The loan was issued to support the Company's construction of a production plant in Sichuan. The Company repaid the loan in July 2014.
	(b) Non-current
			December 31,
			2014			2013
			US$			US$
	Secured loans			70,000,000			-
	Unsecured loans			116,494,154			-
	Less: current portion			12,219,708			-
	Total long-term bank loans, excluding current portion			174,274,446			-
	On January 17, 2014, the Company obtained four two-year unsecured loans with an aggregated principal amount of RMB150 million (equivalent to US$24.2 million) at 110% of Renminbi benchmark interest rates per annum from China Construction Bank. The Company has paid off these four loans in advance on December 29, 2014.
	During March and April 2014, the Company obtained two 15-month unsecured loans of RMB50 million (equivalent to US$8.1 million) at an interest rate of 6.15% per annum from the Bank of Hei Longjiang Longjiang.
	During the second quarter of 2014, the Company obtained seven two-year unsecured loans of RMB328 million (equivalent to US$52.9 million) at an interest rate of 6.15% per annum from Bank of China. The Company has paid off all of these loans in advance in December 2014.
	On May 15, 2014, the Company obtained a two-year unsecured loan of RMB50 million (equivalent to US$8.1 million) at an interest rate of 6.77% per annum from Bank of Communication. On June 23, 2014, the Company obtained a two-year unsecured loan of RMB45 million (equivalent to US$7.3 million) at an interest rate of 6.77% per annum from Bank of Communication. The company paid off these two loans in advance on September 28, 2014.
	On June 12, 2014, the Company obtained a three-year secured loan of US$70 million from Bank of China, at an interest rate of London Inter-Bank Offered Rate (“LIBOR”, 2.5510% as of December 31, 2014) plus 2.6%.  The interest rate is reset every three months. The loan is secured by bank deposits amounted of US$17.7 million.
	On July 1, 2014, the Company obtained three two-year unsecured loans of RMB122 million (equivalent to US$19.7 million) at an interest rate of 6.15% per annum from Bank of China.  The Company has paid off these three loans in advance in December 2014.
	On December 11, 2014, the Company obtained a two-year unsecured loan of RMB197 million (equivalent to US$31.8 million), a one and half  year unsecured loan of RMB1 million (equivalent to US$0.2 million) and a 385-day unsecured loan of RMB1 million(equivalent to US$0.2 million) at an interest rate of 6.60% per annum from Bank of Communication.
	On December 16, 2014, the Company obtained an eighteen month unsecured loans of US$76.4 million from Bank of China, at LIBOR  (2.5510% as of December 31, 2014) plus 1.7%.  The interest rate is reset every three months.
	As of December 31, 2014, the Company had total lines of credit of RMB2,739.2 million (US$441.5 million) from PRC banks in Harbin, Heilongjiang province. As of December 31, 2014, the Company has unused lines of credit of RMB936.2 million (US$150.9  million) with remaining terms less than 12 months and RMB 102.9 million (US$16.6 million) with remaining terms beyond 12 months.
	Certain lines of credit contain financial covenants such as total stockholders' equity, debt asset ratio, current ratio, contingent liability ratio and net profit. As of December 31, 2014, the Company has met these financial covenants.

Notes_Payable

Notes Payable	12 Months Ended
	Dec. 31, 2014
Notes Payable [Abstract]
Notes Payable	Note 10 – Notes Payable
	On February 4, 2014, Favor Sea Limited, a wholly owned subsidiary of the Company, issued US$150,000,000 aggregate principal amount of 11.75% Guaranteed Senior Notes due 2019 (the 'Notes') with issuance price of 99.080%. The Notes bear interest at a rate of 11.75% per annum, payable on February 4 and August 4 of each year, commencing August 4, 2014.  The Notes will mature on February 4, 2019.  Net proceeds after debt issuance costs and debt discount were approximately US$143.5 million.  Debt issuance costs in the amount of US$4.9 million are recorded as deferred charges and included in the other noncurrent assets on the consolidated balance sheet.  The debt discount and debt issuance costs are amortized into interest expense using the effective interest method over the terms of the Notes.
	The Notes can be redeemed prior to their maturity, the details of which are as follows:
	The Company may at its option redeem the Notes, in whole but not in part, at any time prior to February 4, 2017, at a redemption price equal to 100% of the principal amount of the Notes redeemed plus the Applicable Premium, as defined in the Indenture of the Notes, and accrued and unpaid interest, if any, to (but not including) the redemption date. In addition, at any time and from time to time prior to February 4, 2017, the Company may at its option redeem up to 35% of the aggregate principal amount of the Notes with the net cash proceeds of one or more sales of common stock of China XD in an equity offering, at a redemption price of 111.75% of the principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to (but not including) the redemption date, provided that at least 65% of the aggregate principal amount of the Notes issued remains outstanding after each such redemption and any such redemption takes place within 60 days after the closing of the related equity offering.
	On or after February 4, 2017, the Company may on any or more occasions redeem all or any part of the Notes, at the redemption prices (expressed as percentages of principal amount) set forth below, plus accrued and unpaid interest, if any, on the Notes redeemed, to (but not including) the applicable date of redemption, if redeemed during the twelve-month period beginning on February 4 of the years indicated below:
	Year	Redemption Price
	2017	105.875	%
	2018	102.938	%
	Upon occurrence of a Change of Control Triggering Event, as defined in the Indenture of the Notes, the Company must make an offer to purchase all the Notes outstanding at a purchase price equal to 101% of their principal amount, plus accrued and unpaid interest, if any, to (but not including) the purchase date.
	The Notes are guaranteed on a senior basis by China XD and Xinda Holding (HK) Company Limited (“Xinda Holding (HK)”), one of its direct subsidiaries. The Notes are secured by a lien on the share capital of Favor Sea Limited and Xinda Holding (HK).
	For the year ended December 31, 2014, the Company recognized interest expenses of the Notes in the amount of US$16,870,122.

Accrued_expenses_and_other_cur

Accrued expenses and other current liabilities	12 Months Ended
	Dec. 31, 2014
Accrued expenses and other current liabilities [Abstract]
Accrued expenses and other current liabilities	Note 11 – Accrued expenses and other current liabilities
	Accrued expenses and other current liabilities consist of the following:
		December 31,
		2014		2013
		US$		US$
	Payables for purchase of property, plant and equipment		7,234,607		44,510,678
	Accrued freight expenses		1,688,431		5,010,341
	Accrued interest expenses		9,031,741		1,171,203
	Others		6,529,804		5,200,782
	Total accrued expenses and other current liabilities		24,484,583		55,893,004
	Others mainly represent accrued payroll and employee benefits, non income tax payables, accrued issuance cost for the note offering, deferred revenue, and other accrued miscellaneous operating expenses.

Related_party_transactions

Related party transactions	12 Months Ended
	Dec. 31, 2014
Related party transactions [Abstract]
Related party transactions	Note 12 – Related party transactions
	The Company entered into related party transactions with Harbin Xinda High-Tech Co., Ltd. ("Xinda High-Tech"), an entity controlled by the wife of Mr. Han, the chief executive officer and controlling stockholder of the Company and Mr. Han's son.  The significant related party transactions are summarized as follows:
	The significant related party transactions are summarized as follows:
		Years Ended December 31,
		2014			2013			2012
		US$			US$			US$
	Costs and expenses resulting from transactions with related parties:
	Rental expenses for plant and office space			791,460			801,715		634,457
	The balance due from a related party is summarized as follows:
		December 31,
		2014			2013
		US$			US$
	Amounts due from a related party:
	Prepaid rental expenses to Xinda High-Tech			220,262			225,752
	The Company rents the following plant and office buildings in Harbin, Heilongjiang province from Xinda High-Tech:
	Premise Leased		Area (M2)			Annual Rental Fee (US$)		Period of Lease
	Plant and office building			20,250			665,440	Between May 1, 2012 and December 31, 2013
	Office building			250			8,115	Between January 1, 2012 and December 31, 2013
	Office building			3,394			110,173	Between May 1, 2012 and April 30, 2013
	Office building			3,394			110,173	Between May 1, 2013 and December 31, 2013
	Office building			23,894			775,613	Between January 1, 2014 and December 31, 2018
	The Company rents the following facilities in Harbin, Heilongjiang province from Mr. Han's son:
	Premise Leased		Area (M2)			Annual Rental Fee (US$)		Period of Lease
	Facility			3,134			16,231	Between January 1, 2014 and December 31, 2014
	Facility			200			6,492	Between August 17, 2014 and August 16, 2015

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Taxes [Abstract]
Income Taxes	Note 13 – Income Taxes
	China XD and Xinda Holding (HK) US Sub Inc. (“Xinda US)”) (collectively referred to as the “U.S. Entities”) are each subject to a tax rate of 34% and file separate U.S. federal income tax returns.  Favor Sea (US) Inc. (“Favor Sea (US)”) was subject to a tax rate of 34% and file separate U.S. federal income tax returns before all of its assets and liabilities, business and employees were transferred to Xinda US in 2013, as a result of an internal organization.  Favor Sea (US) was liquidated after the reorganization.
	Under the current laws of the British Virgin Island (“BVI”), Favor Sea Limited (“Favor Sea BVI”), a subsidiary of China XD, is not subject to tax on its income or capital gains.
	No provision for Hong Kong Profits Tax was made for Xinda Holding (HK) Co., Ltd. (“Xinda HK”), (formerly known as Hong Kong Engineering Plastics Co., Ltd.), Xinda (HK) International Trading Co., Ltd. (“Xinda Trading”), and Xinda Hong Kong Trading Co., Ltd. ("HK Trading") as they did not have any assessable profits arising in or derived from Hong Kong for any of the periods presented.
	Under the current laws of Dubai, AL Composites Materials FZE (“Dubai Composites”), a subsidiary of China XD, is exempted from income taxes.
	The Company's PRC subsidiaries file separate income tax returns in the PRC.  Effective from January 1, 2008, the PRC statutory income tax rate is 25% according to the Corporate Income Tax (“CIT”) Law which was passed by the National People's Congress on March 16, 2007.
	Pursuant to an approval from the local tax authority in July 2013, Sichuan Xinda Enterprise Group Co., Ltd. (“Sichuan Xinda Group”), a subsidiary of China XD, became a qualified enterprise located in the western region of the PRC, which entitled it to a preferential income tax rate of 15% from January 1, 2013 to December 31, 2020.
	The CIT Law and its implementation rules impose a withholding income tax at 10%, unless reduced by a tax treaty or arrangement, on the amount of dividends distributed by a PRC-resident enterprise to its immediate holding company outside the PRC that are related to earnings accumulated beginning on January 1, 2008. Dividends relating to undistributed earnings generated prior to January 1, 2008 are exempt from such withholding income tax.
	China XD earnings from its subsidiaries in PRC  and Dubai are subject to the U.S. federal income tax at 34%, less any applicable foreign tax credits. Due to its plan to indefinitely reinvest its earnings in the PRC, the Company has not provided for deferred income tax liabilities related to PRC withholding income tax on undistributed earnings of US$414,416,319 and US$383,294,864 as of December 31, 2014 and 2013, respectively. In addition, due to its plan to indefinitely reinvest its earnings in Dubai, the Company has not provided for deferred income tax liabilities related to Dubai on undistributed earnings of US$83,272,307 and nil as of December 31, 2014 and 2013, respectively. It is not practicable to estimate the amounts of unrecognized deferred income tax liabilities thereof.
	The components of income before income taxes are as follows:
		Years Ended December 31,
		2014					2013					2012
		US$					US$					US$
	US		(4,957,190		)			(4,768,725		)			625,840
	BVI		(16,070,146		)			(7,685		)			(4,208	)
	Hong Kong		(973,523		)			(815,408		)			(568,268	)
	Dubai		83,267,935					-					-
	PRC, excluding Hong Kong		77,775,570					186,127,783					115,530,576
	Total income before taxes		139,042,646					180,535,965					115,383,940
	The Company's income tax expense (benefit) recognized in the consolidated statements of comprehensive income consists of the following:
		Years Ended December 31,
		2014				2013				2012
		US$				US$				US$
	Current income tax expense-PRC		20,089,436				47,559,763				31,091,188
	Current income tax expense-US		195,598				1,017,585				-
	Deferred income tax benefit-PRC		(2,018,757	)			(1,880,228	)			(1,574,995	)
	Total income tax expense		18,266,277				46,697,120				29,516,193
	The effective income tax rate based on income tax expense and income before income taxes reported in the consolidated statements of comprehensive income differs from the PRC statutory income tax rate of 25% due to the following:
		Years Ended December 31,
			2014				2013					2012
			US$				US$					US$
	PRC statutory income tax rate		25	%			25	%				25	%
	Increase (decrease) in effective income tax rate resulting from:
	Tax rate differential on entities not subject to PRC income tax		(12.1	)%			(0.1	)%				0.2	%
	Non-deductible expenses (non-taxable income)		0.6	%			0.8	%				(0.4	)%
	Preferential tax rate		(3.3	)%			(0.7	)%				(0.0	)%
	Change in valuation allowance		0.5	%			(0.0	)%				(0.4	)%
	Others		2.4	%			0.9	%				1.2	%
	Effective income tax rate		13.1	%			25.9	%				25.6	%
	Pursuant to an approval from the local tax authority in July 2013, Sichuan Xinda Enterprise Group Co., Ltd. ("Sichuan Xinda Group"), a subsidiary of China XD, became a qualified enterprise located in the western region of the PRC, which entitled it to a preferential income tax rate of 15% from January 1, 2013 to December 31, 2020. Under the current laws of Dubai, Al Composites Materials FZE ("Al Composites"), a subsidiary of China XD, is exempted from income taxes.
	The principal components of the Company's deferred income tax assets and deferred income tax liabilities are as follows:
		December 31,
		2014						2013
		US$						US$
	Deferred income tax assets:
	Tax loss carryforwards			727,711						73,182
	Less: valuation allowance			-727,711						(73,182)
	Deferred income tax assets, net			-						-
	Deferred income tax liabilities:
	Net assets of Research Institute granted to Research Center			1,185,638						3,134,131
	Forward contract			-604						-
	Property, plant and equipment			15,766,517						16,294,575
	Total deferred income tax liabilities			16,951,551						19,428,706
	The Research Institute was established with a registered capital of approximately US$0.4 million in 2007.  The Research Institute provided research and development services to the Company's ultimate end customers.  In December 2010, for tax purposes and because the Research Institute could not meet the Company's development needs, the Company dissolved the Research Institute and formed a new legal entity, Heilongjiang Xinda Enterprise Group Macromolecule Materials R&D Center Company Limited ("Xinda Group Material Research"). Based on applicable regulations promulgated by the local Civil Affairs Bureau, only the local government has the authority for the distribution of the assets of the Research Institute upon liquidation.  Therefore, the Company dissolved the Research Institute by distributing the net assets of the Research Institute in the amount of US$84.0 million to the local government. The difference between the net assets in the amount of US$84.0 million and the amount of the initial registered capital of US$0.4 million represents undistributed accumulated profit generated by the Research Institute from its inception date to its liquidation date.  Simultaneously, the local government granted the net assets back to the Research Center, the newly established subsidiary of Harbin Xinda in December 2010. The Research Center was established with a registered capital of approximately US$0.5 million funded by cash.  A loss equal to the net assets of the Research Institute distributed to the local government was recognized in other expenses and a government grant for the receipts of the same assets back from the local government was recognized as other income in the consolidated statements of comprehensive income. Pursuant to the local tax regulations, the net assets granted to the Research Center are not subject to income tax to the extent the Research Center spends a total of US$84.0 million in five years from the date of grant.  The expenditures of US$84.0 million will not be deductible for income tax purposes.  As a result, the Company recognized a deferred income tax liability in the amount of US$21.5 million in connection with the net assets granted to the Research Center as of December 31, 2010.  To the extent that the Company has spent on research and development equipment during the five years from the date of grant, deferred income tax liabilities relating to the net assets of Research Institute granted to Research Center will be reclassified to deferred income tax liabilities relating to property, plant and equipment, and recognized in profit or loss over the useful life of the asset.
	The movements of the valuation allowance are as follows:
			Years Ended December 31,
			2014			2013			2012
			US$			US$			US$
	Balance at the beginning of the year		73,182			556,677			1,005,361
	Expiration due to liquidation		-			-437,762			-
	Additions of valuation allowance		662,151			72,305			41,110
	Reduction of valuation allowance		(7,622	)		-118,038			-489,794
	Balance at the end of the year		727,711			73,182			556,677
	The valuation allowance as of December 31, 2014, 2013 and 2012 was primarily provided for the deferred income tax assets of certain Entities, which were at cumulative loss positions. As of December 31, 2014, for U.S. federal income tax purposes, the Company had tax loss carryforwards of  (i) US$374,721, from Xinda US, of which US$2,581 and US$372,140 would expire by 2033 and 2034, respectively, if unused, (ii) US$1,247,021 from subsidiaries in PRC, of which US$19,371, US$67,201, and US$1,160,448 would expire by 2017, 2018 and 2019, respectively, if unused and (iii) US$1,762,003 from subsidiaries in HK, which could be carried forward indefinitely to be offset against future profits. In view of the cumulative losses for the entities concerned, 100% valuation allowances were provided against their deferred income tax assets as of December 31, 2014, 2013 and 2012, which in the judgment of the management, are not more likely than not to be realized.
A reconciliation of the beginning and ending amount of total unrecognized tax benefits for the year ended December 31, 2014 is as follows:
	Year ended December 31,
	2014			2013			2012
	US$			US$			US$
Balance at beginning of year	8,807,490			-			-
Increase related to current year tax positions	5,801,768			8,807,490			-
Balance at end of year	14,609,258			8,807,490			-
At December 31, 2014, 2013 and 2012, there are US$12,544,088, US$6,690,841 and nil of unrecognized tax benefits that, if recognized, would affect the annual effective tax rate.
The Company recognizes interest accrued related to unrecognized tax benefits in interest expense and does not recognize penalties. During the years ended December 31, 2014, 2013 and 2012, the Company recognized approximately US$1,322,135, nil and nil of interest expense. The Company had approximately US$1,322,135 and nil for the payment of interest accrued related to unrecognized tax benefits at December 31, 2014 and 2013 respectively. US$14,025,825 of unrecognized tax benefits were included in non-current income taxes payable. US$583,433 of unrecognized tax benefit were presented as a reduction of the deferred income tax assets for tax loss carryforwards since the uncertain tax position would reduce the tax loss carryforwards under the tax law. The unrecognized tax benefits represent the estimated income tax expenses the Company would be required to pay, should the income tax rate used, taxable income and deductible expenses for tax purpose recognized in accordance with tax laws and regulations. The Company is currently unable to provide an estimate of a range of the total amount of unrecognized tax benefits that is reasonably possible to change significantly within the next twelve months.
The tax returns of the U.S. Entities are subject to U.S. federal income tax examination by tax authorities for the years from 2012 to 2014.  According to the PRC Tax Administration and Collection Law, the statute of limitations is three years if the underpayment of taxes is due to computational errors made by the taxpayer or the withholding agent.  The statute of limitations is extended to five years under special circumstances where the underpayment of taxes is more than US$15,000.  In the case of transfer pricing issues, the statute of limitations is ten years.  There is no statute of limitations in the case of tax evasion.  The tax returns of the Company's PRC subsidiaries for the years from 2012 to 2014 are open to examination by the PRC tax authorities.

Common_Stock

Common Stock	12 Months Ended
	Dec. 31, 2014
Common Stock [Abstract]
Common Stock	Note 14 – Common Stock
	Pursuant to the amended Article of Incorporation dated March 12, 2009, the Company's authorized share capital is 550,000,000 shares, consisting of 500,000,000 shares of common stock (US$0.0001 par value), and 50,000,000 shares of all classes of preferred stock (US$0.0001 par value).

Preferred_Stock

Preferred Stock	12 Months Ended
	Dec. 31, 2014
Preferred Stock [Abstract]
Preferred Stock	Note 15 – Preferred Stock
	Series B preferred stock
	The Company issued 1,000,000 shares of Series B preferred stock to XD Engineering Plastics in December 2008.  The Series B preferred stock is not convertible or redeemable.  The holder of Series B preferred stock has 40% of the total voting power of the Company on a fully diluted basis.  Holders of Series B preferred stock are not entitled to receive dividends.  In the event of any liquidation, dissolution or winding up, whether voluntary or involuntary, the holders of issued and outstanding shares of Series B preferred stock shall be entitled to receive, prior and in preference to any distribution of any of the assets of the Company to the common stockholders and any other series of preferred stock ranking junior to the Series B preferred stock with respect to liquidation, US$1.00 per share in cash.  The holders of Series B preferred stock will not be entitled to any further participation in any distribution of assets by the Company.
	Redeemable Series D convertible preferred stock
	On August 15, 2011, China XD entered into a securities purchase agreement (the “Securities Purchase Agreement”) with MSPEA Modified Plastics Holding Limited, a Cayman Islands company and an affiliate of Morgan Stanley Private Equity Asia III Holdings (Cayman) Ltd, a Cayman Islands limited liability company (“MSPEA”), XD Engineering Plastics and Mr. Han, pursuant to which MSPEA purchased 16,000,000 shares of the Company's Series D convertible preferred stock with par value of US$0.0001 per share (the “Series D Preferred Stock”), for a total consideration of US$100 million or US$6.25 per share. On September 28, 2011, China XD issued 16,000,000 shares of Series D Preferred Stock and received total gross proceeds of US$100 million in cash.  Net proceeds after issuance cost were approximately US$99.1 million.
	The significant terms of Series D Preferred Stock are as follows:
	(i) Conversion
	The holders of the Series D Preferred Stock have the right to convert all or any portion of their holdings into common stock at a price of US$6.25 per share from January 1, 2012 through February 4, 2019, subject to adjustments for stock splits, combinations, dividends or distributions of common stock, merger and reorganization. In addition, if the Company achieves net income as adjusted to exclude (i) all extraordinary or non-recurring gains or losses for the relevant period, (ii) all gains or losses derived from any business operation other than the principal business of the Company or otherwise derived outside the ordinary course of business of the Company for the relevant period, and (iii) all gains or losses attributable to the Series D Preferred Stock (“Actual Profit”), at least RMB360 million, RMB520 million and RMB800 million in 2011, 2012 and 2013, respectively, each outstanding Series D Preferred Stock will be converted into common stock from September 28, 2014 upon the delivery of a written notice from the Company to the holders of Series D Preferred Stock. The Company determined that there was no embedded beneficial conversion feature attributable to the Series D Preferred Stock at the commitment date since the initial conversion price of the Series D Preferred Stock was greater than the price of China XD's common stock.
	(ii) Voting
	The holders of Series D Preferred Stock have the same voting rights as the common stockholders on an “if-converted” basis. In addition, if 1,600,000 shares or more (adjusted for any dilutive corporate actions) of Series D Preferred Stock remain outstanding, holders of Series D Preferred Stock have veto rights over certain material corporate actions of the Company.
	(iii) Dividends
	Each share of Series D Preferred Stock shall be entitled to dividend or other distribution simultaneously with any dividend or distribution on any shares of the Company's common stock as if each share of Series D Preferred Stock has been converted to common stock.
	(iv) Liquidation preference
	In the event of the liquidation, dissolution or winding-up of the affairs of the Company, whether voluntary or involuntary (a “Liquidation”), the holders of Series D Preferred Stock then outstanding shall be entitled to receive, out of the assets of the Company available for distribution to its stockholders before any payment shall be made to the holders of shares of common stock by reason of their ownership thereof, but after any payment shall be made to the holders of any Series B preferred stock by reason of their ownership thereof, with respect to each share of Series D Preferred Stock, an amount equal to the greater of (i) an amount per share that would yield a total internal rate of return of 15% on the Series D Original Issuance Price, taking into account all cash dividends and/or distributions paid by the Company and received by the holder in respect of his or her share of Series D Preferred Stock (the IRR Price); and (ii) an amount per share as would have been payable had all shares of Series D Preferred Stock been converted into the Company's common stock pursuant to a voluntary conversion or a mandatory conversion immediately prior to such Liquidation (without taking into account any limitations or restrictions on the convertibility of the shares of Series D Preferred Stock).
	(v) Redemption
	Upon the occurrence of a triggering event as defined below, the holders of the Series D Preferred Stocks have the option to redeem the Series D Preferred Stock at a price equal to the IRR Price (the “Redemption Price”), by delivery of written notice to the Company (the “Redemption Request”) at least 6 months prior to the proposed date of redemption (the “Redemption Date”).
	A triggering event means any of the following events: (I) the occurrence of any of the following: (i) the Actual Profit for the Financial Year ended December 31, 2011 is less than RMB360 million, or (ii) the Actual Profit for the Financial Year ended December 31, 2012 is less than RMB468 million, or (iii) the Actual Profit for the Financial Year ending December 31, 2013 is less than RMB608 million, which Actual Profit target has been removed pursuant to the Restated Certificate of Designation filed as of January 27, 2014 (such targets under (I) collectively, the “Actual Profit Targets”); (II) any breach by any of the Company, XD Engineering Plastics and Mr. Han (the “Principal Stockholders”) of any representation, warranty, covenant or other agreement in the Securities Purchase Agreement, the Certificate of Designation, the Registration Rights Agreement, the Stockholders' Agreement, the Pledge Agreement and the Indemnification Agreements (collectively, the “Transaction Document”) that (i) in the case of a breach of a covenant or agreement that is curable, has remained uncured for 30 days after the holder of Series D Preferred Stock has given written notice of such breach to the Company' Principal Stockholders and (ii) has had or could reasonably be expected to have a material adverse impact on (a) the business, operations, properties, financial position (including any material increase in provisions), earnings or condition of the Company, or (b) the value, marketability or liquidity of the Series D Preferred Stock taking into account any remedies already sought and received in connection with such breach; or (III) the commencement by the Company or any other member of the Company of any bankruptcy, insolvency, reorganization or of any other case or proceeding to be adjudicated a bankruptcy or insolvency, or the consent by it to the entry of a decree or order for relief in respect of the Company or any other member of the Company in an involuntary case; or the appointment of a custodian, receiver, liquidator, assignee, trustee, sequestrator other similar officials of the Company or any other member of the Company for the winding up or liquidation of its affairs.
	If any shares of Series D Preferred Stock remain outstanding on February 4, 2019, the holders of such shares shall require the Company to redeem each share of Series D Preferred Stock at a price equal to the IRR Price (the “Mandatory Redemption Price”) no later than six months after the Original Maturity Date.
	As of December 31, 2013, the Company concluded that it has met the Actual Profit Targets and that it is not probable any of the triggering events has occurred or is expected to occur. In addition, the Company concluded that it has met the performance target of RMB360 million, RMB520 million and RMB800 million in 2011, 2012 and 2013, respectively and accordingly it has the right to request the conversion of Series D Preferred Stock into common stock.  As a result, it was not probable that the Series D Preferred Stock is redeemable as of December 31, 2014. Therefore no changes in the redemption value were recognized during 2014. The Company will assess the probability of whether the Series D Preferred Stock is redeemable at each reporting period end.
	Pursuant to the Stockholders' Agreement between MSPEA and the Principal Stockholders, if the Company shall at any time issue or sell any shares of common stock or equity securities, other than an issuance or sale in an exempted issuance, at a price per share, or in the case other equity securities exchangeable or convertible into shares of common stock, at a conversion or exercise price for a share of common stock (in each case, the “New Issue Price”) that is less than the then effective conversion price of Series D Preferred Stock, the holders of Series D Preferred Stock shall have the right to purchase from the Principal Stockholders, and Principal Stockholders shall sell and transfer to the holders of Series D Preferred Stock, at par value per share, a number of shares of common stock that is equal to (i) the number of shares of common stock that the Series D Preferred Stock held by the holders of Series D Preferred Stock would have been convertible into as if the then effective conversion price is equal to the New Issue Price, minus (ii) the number of shares of common stock that the outstanding Series D Preferred Stock held by the holders of Series D Preferred Stock are convertible into under the then effective conversion price. The exempted issuance refers to (a) any issuance of common stock upon the conversion of the Series D Preferred Stock; (b) the conversion, exercise or exchange of options, warrants or convertible securities of the Company that are outstanding and have been fully disclosed to MSPEA as of September 28, 2011; (c) any issuance of shares of common stock or options to employees, officers, directors or other service providers of the Company pursuant to any stock or option plan duly approved for such purpose including the board of directors; (d) any issuance of common stock, options, warrants or convertible securities of the Company pursuant to acquisitions or other strategic transactions, in each case approved by the board of directors and (e) any issuance of adjustment shares that the Principal Stockholders shall sell and transfer to the holders of Series D Preferred Stock if the Company is unable to achieve the Actual Profit as defined below.
	In addition, the Principal Stockholders entered into a pledge agreement with the holders of Series D Preferred Stock to secure the payment and performance of the following obligations (collectively, the “Secured Obligations”), which are secured by the collateral under the Pledge Agreement between the holders of Series D Preferred Stock and the Principal Stockholders: (a) the full and prompt payment when due (whether at stated maturity, by redemption or acceleration or otherwise) of all debts, obligations and liabilities of Principal Stockholders owing to the holders of Series D Preferred Stock; (b) all reasonable costs and expenses incurred by the holders of Series D Preferred Stock to enforce this Agreement and maintain, preserve, collect and realize upon the collateral. The collateral refers to 16,000,000 shares of common stock, par value $0.0001, of China XD registered in the name of XD Engineering Plastic.
	The holders of Series D Preferred Stock have an option to purchase common stock at par value from the Principal Stockholders if the Company is unable to achieve the Actual Profit of RMB360 million, RMB520 million and RMB800 million in 2011, 2012 and 2013, respectively. The number of common stock to be purchased is based on a pre-set formula as specified in the Stockholders' Agreement.
	The Stockholders' Agreement was an inducement made to facilitate the investment in the Series D Preferred Stock on behalf of the Company. Therefore, the fair value of the options issued by the Principal Stockholders to the holders of the Series D Preferred Stock was recognized as additional paid-in capital and reflected as a reduction of the proceeds allocated to the Series D Preferred Stock. As of September 28, 2011, the fair value of the options was determined to be US$1,501,000 based on the Company's common stock price on September 28, 2011, and the probability of the Company's future financial projection and the expected volatility of the Company's common stock.

Warrants

Warrants	12 Months Ended
	Dec. 31, 2014
Warrants [Abstract]
Warrants	Note 16 – Warrants
	In connection with the issuance of Series C preferred stock on December 1, 2009, the Company also issued Series A investor warrants to purchase a total of 1,320,696 shares of common stock at an exercise price of US$5.50 per share with a five-year term.  On April 3, 2014, 130,435 Series A investor warrants were exercised for 130,435 shares of the common stocks of the Company. The Company received proceeds of US$596,740 in cash on April 3, 2014. In addition, 894,383 shares of Series A investor warrants were exercised using cashless method for 472,023 shares of the common stocks of the Company during the year ended December 31, 2014.  295,878 investor warrants expired on December 1, 2014.
	The Company also issued Series A placement agent warrants to purchase a total of 117,261 shares of common stock at an exercise price of US$5.50 per share, with a five-year term to a third party as part of the placement fee.  The exercise price of the Series A investor warrants was adjusted to US$4.90 per share in connection with the common stock direct offering on October 4, 2010. The warrants expired on December 1, 2014.
	In connection with the common stock direct offering on October 4, 2010, the Company issued Series C investor warrants to purchase a total of 1,666,667 shares of common stock at an exercise price of US$6.00 per share. The warrants are exercisable for a period between April 8, 2011 and October 14, 2011. The Company also issued Series C placement agent warrants to purchase 166,667 shares of common stock at an exercise price of US$7.50 per share to a third party as part of the placement fee.  The warrants expired on July 6, 2013.
	Pursuant to the agreements of the Series A investor warrants, if the Company issues its common stock for a consideration per share less than the exercise price of the Series A investor warrants, the exercise price of the Series A investor warrants shall be reduced to the lower issuance price. Also, if the Company grants any options or other securities convertible to its common stock for which the exercise or conversion price is less than the exercise price of the Series A investor warrants, the exercise price of the Series A investor warrants shall be reduced to the lowest exercise or conversion price. The holders of the Series A placement agent warrants have the same down-round protection as the holders of the Series A investor warrants. The Company's Series A investor warrants and Series A placement agent warrants with down-round protection are not considered indexed to a company's own stock under ASC Subtopic 815-40, Contracts in Entity's Own Equity, and accordingly are accounted as derivatives.
	The Company also determined that the Series C placement agent warrants are derivatives because the warrants require a net cash settlement if the Company fails to cause the transfer agent to timely transmit to the warrant holders a certificate or certificates representing the shares of common stock upon exercise.
	Accordingly, the Company accounted for these warrants at fair value with changes in fair value recorded in earnings at each reporting period.
	There were no outstanding warrants as of December 31, 2014.  The outstanding and exercisable warrant balance as of December 31, 2013:
	Warrants	Exercise Price			Number of Warrants				Remaining
					Outstanding				Contractual Life
		US$							Years
	Series A investor warrants		4.9			1,320,696				0.92
	Series A placement agent warrants		5.5			117,261				0.92
	Total					1,437,957
	The fair values of these warrants as of December 31, 2013 were calculated using the Black-Scholes option-pricing model with the following assumptions:
		Series A Investor			Series A Placement
		Warrants			Agent Warrants
	Volatility		28.9	%		28.9	%
	Expected dividends yield		0	%		0	%
	Fair value of underlying common stock (per share)		5.26			5.26
	Risk-free interest rate (per annum)		0.16	%		0.16	%
	The changes in the fair value of warrants during the years presented is as follow:
		Series A investor				Series A placement				Series C placement			Total
		warrants				agent warrants				agent warrants
		US$				US$				US$			US$
	As of December 31, 2012		915,189				66,077				27,484			1,008,750
	Change in fair value		89,721				(7,586	)			(27,484	)		54,651
	As of December 31, 2013		1,004,910				58,491				-			1,063,401
	Change in fair value		1,929,565				(58,491	)			-			1,871,074
	Exercise of warrants		(2,934,475	)			-				-			(2,934,475	)
	As of December 31, 2014		-				-				-			-

Stock_based_compensation

Stock based compensation	12 Months Ended
	Dec. 31, 2014
Stock based compensation [Abstract]
Stock based compensation	Note 17 – Stock based compensation
	Stock options issued to employees, directors and consultants
	On May 26, 2009, the Board of Directors approved the adoption of the 2009 Stock Incentive Plan (the “2009 Plan”), which provides for the granting of stock options and other stock-based awards to key employees, directors and consultants of the Company.  The aggregate number of common stock which may be issued under the 2009 Plan may not exceed 7,800,000 shares.
	Nonvested shares
	On August 7, 2010, the Company's Board of Directors approved the grant of 99,856 nonvested shares to four independent directors, two directors and certain executive officers and employees.  19,856 shares vested on February 7, 2011 and 80,000 shares vested on August 6, 2013.
	On October 24, 2011, the Company's Board of Directors approved the grant of 26,405 nonvested shares to four independent directors, all vested on April 24, 2012.
	On August 7, 2012, the Company's Board of Directors approved the grant of (i) 230,000 nonvested shares to certain executive officers and employees which will vest on August 6, 2015, (ii) 225,000 nonvested shares to 15 consultants which vested on February 7, 2013, and (iii) 10,000 nonvested shares to a former employee which vested on the date of grant.
	On May 8, 2013, the Company's Board of Directors approved the grant of 26,361 nonvested shares to three independent directors, all of which vested on November 8, 2013.
	On August 7, 2013, the Company's Board of Directors approved the grant of (i) 192,370 nonvested shares to certain executive officers and employees which will vest on August 7, 2016; (ii) 674,205 nonvested shares to 17 consultants and two independent directors which vested on February 7, 2014.
	On August 7, 2014, the Company's Board of Directors approved the grant of (i) 282,460 nonvested shares to certain executive officers and employees which will vest on August 7, 2017; (ii) 9,488 nonvested shares to two independent directors which will vest on February 7, 2015.
	A summary of the nonvested shares activity for the years ended December 31, 2014, 2013 and 2012 is as follows:
		Number of Nonvested			Weighted Average
		Shares			Grant date Fair Value
						US$
	Outstanding as of December 31, 2011		106,405			6.03
	Granted		465,000			4.41
	Vested		(36,405	)		4.39
	Forfeited		(22,000	)		6.37
	Outstanding as of December 31, 2012		513,000			4.66
	Granted		892,936			4.52
	Vested		(311,361	)		4.74
	Forfeited		(4,000	)		4.37
	Outstanding as of December 31, 2013		1,090,575			4.89
	Granted		291,948			5.13
	Vested		(674,205	)		4.58
	Forfeited		(61,030	)		4.47
	Outstanding as of December 31, 2014		647,288			5.00
	Expected to vest as of December 31, 2014		647,288			5.00
	The total fair value of shares vested during the years ended December 31, 2014, 2013 and 2012 was US$3,090,766, US$1,499,941 and US$159,754, respectively.
	The Company recognized US$1,003,040, US$3,630,565 and US$1,098,795 of compensation expense in general and administrative expenses relating to nonvested shares for the years ended December 31, 2014, 2013 and 2012, respectively.
	As of December 31, 2014, total unrecognized compensation cost relating to nonvested shares was US$1,806,377, which is to be recognized over a weighted average period of 1.72 years.
	Stock options
	On August 7, 2010, the Company's Board of Directors approved the grant of stock options to purchase 445,500 shares of the Company's common stock to two directors and certain executive officers and employees at an exercise price of US$8.01. The options vest over a three-year period beginning on each anniversary of the date of grant. One-third of the options expired on August 7, 2011, 2012 and 2013, respectively.
	A summary of stock options activity for the years ended December 31, 2013 and 2012 is as follows.  There were no stock options activities for the year ended December 31, 2014.
		Number of			Weighted Average
		Options			Exercise Price
		Outstanding			US$
	Outstanding as of December 31, 2011		297,000			8.01
	Expired		(148,500	)		8.01
	Outstanding as of December 31, 2012		148,500			8.01
	Expired		(148,500	)		8.01
	Outstanding as of December 31, 2013		-			-
	The Company recognized US$127,215 and US$294,460 of share-based compensation expense in general and administration expenses relating to stock options for the years ended December 31, 2013 and 2012, respectively.

Earnings_per_share

Earnings per share	12 Months Ended
	Dec. 31, 2014
Earnings per share [Abstract]
Earnings per share	Note 18– Earnings per share
	Basic and diluted earnings per share are calculated as follows:
		Years Ended December 31,
		2014			2013			2012
		US$			US$			US$
	Numerator:
	Net income		120,776,369			133,838,845			85,867,747
	Less: Dividends to Series C convertible preferred stockholders		-			-			(110	)
	Net income available to the Company's stockholders		120,776,369			133,838,845			85,867,637
	Less:
	Earnings allocated to participating Series C convertible preferred stock		-			-			(478	)
	Earnings allocated to participating Series D convertible preferred stock		(29,552,623	)		(33,229,887	)		(21,527,155	)
	Earnings allocated to participating nonvested shares		(1,026,493	)		(1,347,073	)		(364,965	)
	Net income for basic and diluted earnings per share		90,197,253			99,261,885			63,975,039	)
	Denominator:
	Denominator for basic and diluted earnings per share		48,833,434			47,794,028			47,549,275
	Earnings per common share:
	Basic and diluted earnings per common share		1.85			2.08			1.35
	The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the years ended December 31, 2014, 2013 and 2012, because their effects are anti-dilutive:
		Years Ended December 31,
		2014			2013			2012
		US$			US$			US$
	Numerator:
	Shares issuable upon conversion of Series D convertible preferred stocks		16,000,000			16,000,000			16,000,000
	Shares issuable upon exercise of Series A investor warrant		-			1,320,696			1,320,696
	Shares issuable upon exercise of Series A placement agent warrant		-			117,261			117,261
	Shares issuable upon exercise of Series C placement agent warrant		-			-			166,667
	Shares issuable upon exercise of stock options		-			-			148,500

Statutory_reserves

Statutory reserves	12 Months Ended
	Dec. 31, 2014
Statutory reserves [Abstract]
Statutory reserves	Note 19 – Statutory reserves
	Under PRC rules and regulations, all subsidiaries of China XD in the PRC are required to appropriate 10% of their net income, as determined in accordance with PRC accounting rules and regulations, to a statutory surplus reserve until the reserve balance reaches 50% of their registered capital.  The appropriation to this statutory surplus reserve must be made before distribution of dividends to China XD can be made.  The statutory reserve is non-distributable, other than during liquidation, and can be used to fund previous years losses, if any, and may be converted into share capital by issuing new shares to existing shareholders in proportion to their shareholding or by increasing the par value of the shares currently outstanding, provided that the remaining balance of the statutory reserve after such issue is not less than 25% of the registered capital.
	For the years ended December 31, 2014, 2013 and 2012, China XD' subsidiaries in the PRC made appropriations to the reserve fund of RMB37,156,541 (equivalent to US$6,030,731), RMB30,075,331 (equivalent to US$4,892,127) and  RMB3,737,172 (equivalent to US$599,858) respectively. As of December 31, 2014, 2013 and 2012, the accumulated balance of the statutory surplus reserve was RMB91,830,755 (equivalent to US$14,924,173), RMB54,674,214 (equivalent to US$8,893,442) and RMB24,598,883 (equivalent to US$3,948,393) respectively.

Commitments_and_contingencies

Commitments and contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and contingencies [Abstract]
Commitments and contingencies	Note 20– Commitments and contingencies
	(1)	Lease commitments
	Future minimum lease payments under non-cancellable operating leases agreements as of December 31, 2014 were as follows.  The Company's leases do not contain any contingent rent payments terms.
			US$
	Years ending December 31,
	2015			1,475,625
	2016			1,100,034
	2017			842,564
	2018			775,613
	2019 and thereafter			-
	Rental expenses incurred for operating leases of plant and equipment and office spaces were US$1,476,640, US$1,042,894 and US$711,310 in 2014, 2013 and 2012, respectively. There are no step rent provisions, escalation clauses, capital improvement funding requirements, other lease concessions or contingent rent in the lease agreements. The Company has no legal or contractual asset retirement obligations at the end of leases. The company's leases do not contain any contingent rent payments terms.
	(2)           Sichuan plant construction and equipment
	On March 8, 2013, Xinda Holding (HK) entered into an investment agreement with Shunqing Government, pursuant to which Xinda Holding (HK) will invest RMB1.8 billion (equivalent to US$290 million) in property, plant and equipment and approximately RMB0.6 billion (equivalent to US$97 million) in working capital, for the construction of Sichuan plant.  As of December 31, 2014, the Company has a commitment of RMB584.0 million (equivalent to US$94.1 million) mainly for acquisition of equipment.
	(3)             Contingencies
	The Company and certain of its officers were named as defendants in two putative securities class action lawsuits filed on July 15, 2014 and July 16, 2014 in the United States District Court for the Southern District of New York. The Company, after consultation with its legal counsel, believes that the lawsuits are without merit and intends to vigorously defend against them.  Nevertheless, there is a possibility that a loss may have been incurred. In accordance with ASC Topic 450, no loss contingency was accrued as of December 31, 2014 since the possible loss or range of loss cannot be reasonably estimated.

Revenues

Revenues	12 Months Ended
	Dec. 31, 2014
Revenues [Abstract]
Revenues	Note 21 – Revenues
	Revenues consist of the following:
		Years Ended December 31,
		2014		2013		2012
		US$		US$		US$
	Modified Polyamide 66 (PA66)		192,374,156		195,471,978		71,651,635
	Modified Polyamide 6 (PA6)		223,122,191		216,210,438		80,491,488
	Plastic Alloy		400,306,257		296,635,139		123,684,058
	Modified Polypropylene (PP)		232,421,229		286,263,653		290,535,039
	Modified Acrylonitrile butadiene styrene (ABS)		36,804,599		32,440,913		25,348,218
	Polyoxymethylenes (POM)		3,606,000		2,835,335		569,633
	Polyphenylene Oxide (PPO)		14,830,647		13,570,734		-
	Polylactide (PLA)		13,952		-		-
	Others		7,206,661		5,373,656		-
	Subtotal		1,110,685,692		1,048,801,846		592,280,071
	Service revenue		-		2,014,518		7,538,897
	Total Revenue		1,110,685,692		1,050,816,364		599,818,968
	The Company has re-categorized its product types as presented above in order to present more updated breakdown of polymer composite materials since the beginning of 2014, and retrospectively adjusted the sales amount of each types for the years ended December 31, 2013 and 2012 in conformity with the new categories.

Selected_Quarterly_Financial_I

Selected Quarterly Financial Information	12 Months Ended
	Dec. 31, 2014
Selected Quarterly Financial Information [Abstract]
Selected Quarterly Financial Information	Note 22 – Selected Quarterly Financial Information (Unaudited)
	The following tables show a summary of the Company's quarterly financial information for each of the four quarters of 2014 and 2013 (in millions, except gross margin and per share amounts):
		Fourth Quarter		Third Quarter		Second Quarter		First Quarter
	2014:00:00
	Revenues	$	307.1	$	315.7	$	264.2	$	223.6
	Gross profit	$	58.1	$	65.4	$	52.3	$	46.6
	Net income	$	35.7	$	43.2	$	19.8	$	22
	Earnings per share
	Basic	$	0.54	$	0.66	$	0.3	$	0.34
	Diluted	$	0.54	$	0.62	$	0.3	$	0.34
		Fourth Quarter		Third Quarter		Second Quarter		First Quarter
	2013:00:00
	Revenues	$	384.5	$	293.1	$	202.2	$	171
	Gross profit	$	91.3	$	65.7	$	37.2	$	29.2
	Net income	$	57.4	$	41.1	$	20.8	$	14.5
	Earnings per share
	Basic and diluted EPS	$	0.89	$	0.64	$	0.32	$	0.23

Geographic_Revenue_Information

Geographic Revenue Information	12 Months Ended
	Dec. 31, 2014
Geographic Revenue Information [Abstract]
Geographic Revenue Information	Note 23 – Geographic Revenue Information
	The following summarizes the Company's revenues from the following geographic areas (based on the location of the customer):
		Years Ended December 31,
		2014		2013		2012
		US$		US$		US$
	Revenues (in US$ millions)
	PRC (excluding HK SAR, Macau SAR and Taiwan)		970.5		1,050.80		599.8
	ROK		140.1		-		-
	Total		1,110.60		1,050.80		599.8

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	Note 24 – Subsequent Events
	To facilitate the construction of our production base in Sichuan Province, and the purchase of requisite equipment, on January 23, 2015, local authorities in Sichuan Province extended to the Company a RMB110 million interest-free loan.
	For the same purposes stated above, on February 11, 2015, the Nanchong City Government of Sichuan Province, through its investment vehicle, provided guarantee on the Company's (1) RMB140 million bank loan accruing at an interest rate of 5.32%, extended by the Bank of Communications and (2) RMB100 million bank loan accruing at an interest rate of 5.32%, extended by the Bank of Construction. The foregoing loans were extended by the corresponding bank in 2015, and are due and payable in five instalments. The last instalment will become due and payable on November 30, 2015.

Summary_of_significant_account1

Summary of significant accounting policies (Policy)	12 Months Ended
	Dec. 31, 2014
Summary of significant accounting policies [Abstract]
Basis of presentation	(a) Basis of Presentation
	The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).
Consolidation	(b) Consolidation
	The accompanying consolidated financial statements include the financial statements of China XD and its wholly-owned subsidiaries.  All significant intercompany transactions and balances have been eliminated upon consolidation.
Use of Estimates	(c) Use of Estimates
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could differ from those estimates.  Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories, the useful lives of property, plant and equipment, the collectability of accounts receivable, the fair values of stock-based compensation awards, derivative liabilities and the accruals for tax uncertainties and other contingencies.  The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
Foreign Currency	(d) Foreign Currency
	The Company's reporting currency is the U.S. dollar (US$). The functional currency of China XD Plastics and its subsidiaries in the United States, BVI, Hong Kong and Dubai, UAE is the US$. The functional currency of China XD's subsidiaries in the PRC is Renminbi (RMB).
	Transactions denominated in currencies other than the functional currency are translated into the functional currency at the exchange rates prevailing at the date of the transaction.  Monetary assets and liabilities denominated in foreign currencies are translated into the functional currency using the applicable exchange rates at the balance sheet date.  The resulting exchange differences are recorded in foreign currency exchange gains (losses) in the consolidated statements of comprehensive income.
	Assets and liabilities of subsidiaries with functional currencies other than US$ are translated into US$ using the exchange rate on the balance sheet date.  Revenues and expenses are translated into US$ at average rates prevailing during the reporting period. The differences resulting from such translation are recorded as a separate component of accumulated other comprehensive income within shareholders' equity.
	Since the RMB is not a fully convertible currency, all foreign exchange transactions involving RMB must take place either through the People's Bank of China or other institutions authorized to buy and sell foreign exchange.
Cash and cash equivalents, time deposits and restricted cash	(e) Cash and cash equivalents, time deposits and restricted cash
	Cash and cash equivalents consist of cash on hand, cash in bank and interest-bearing certificates of deposit with an initial term of three months or less when purchased.
	Time deposits represent certificates of deposit with initial terms of six or twelve months when purchased.  As of December 31, 2014 and 2013, the Company's time deposits bear a weighted average interest rate of 3.0% and 3.1% per annum, respectively.
	Cash that is restricted as to withdrawal or usage is reported as restricted cash in the consolidated balance sheets and is not included as cash and cash equivalents in the consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for bills payable relating to purchases of raw materials are reported as restricted cash and amounted to US$11,868,855 and US$3,964,518 as of December 31, 2014 and 2013, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company. Short-term bank deposits that are pledged as collateral for letter of credit relating to purchases of raw materials are reported as restricted cash and amounted to US$676,917 and US$237,871 as of December 31, 2014 and 2013, respectively. The cash will be available for use by the Company 90 days from the issuance of the letter of credit. The cash flows from the pledged bank deposits, which relate to purchases of raw materials, are reported within cash flows from operating activities in the consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for short-term bank borrowings are reported as restricted cash and amounted to nil and US$9,506,582 as of December 31, 2014 and 2013, respectively. Long-term bank deposits that are pledged as collateral for issuance of letter of guarantee are reported as other non-current assets and amounted to US$17,728,782 and nil as of December 31, 2014 and 2013, respectively. The cash flows from such bank deposits are reported within cash flows from financing activities in the consolidated statements of cash flows.
Accounts Receivable	(f) Accounts Receivable
	Accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. In establishing the required allowance, management considers historical losses, the amount of accounts receivables in dispute, the accounts receivables aging and the customers' payment patterns.  Account balances are written off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote.  The Company does not have any off-balance-sheet credit exposure related to its customers.
Inventories	(g) Inventories
	Inventories are stated at the lower of cost or market. Cost is determined using the weighted average cost method.  Work-in-progress and finish goods comprise direct materials (including purchasing, receiving and inspection costs), direct labor and an allocation of related manufacturing overhead based on normal operating capacity.
Long-lived Assets	(h) Long-lived Assets
	Property, plant and equipment
	Property, plant and equipment are initially recorded at cost.  Depreciation is calculated on the straight-line method over the estimated useful lives of the assets.  The estimated useful lives of property, plant and equipment are as follows:
		Estimated
		Useful Life
	Workshops and buildings	39 years
	Machinery, equipment and furniture	5-10 years
	Motor vehicles	5 years
	An appropriate allocation of depreciation expense of property, plant and equipment attributable to manufacturing activities base on normal capacity is capitalized as part of the cost of inventory, and expensed in cost of revenues when the inventory is sold.  Costs incurred in the construction of property, plant and equipment, including an allocation of interest expense incurred, are capitalized and transferred into their respective asset category when the assets are ready for their intended use, at which time depreciation commences. Ordinary maintenance and repairs are charged to expenses as incurred, while replacements and betterments are capitalized.  When items are retired or otherwise disposed of, income is charged or credited for the difference between net book value of the item disposed and proceeds realized thereon.
	Interest cost incurred in the construction of new facilities is capitalized and transferred out of construction in progress and into their respective assets categories when the assets are ready for their intended use, at which time depreciation commences.
	Land Use Rights
	A land use right in the PRC represents an exclusive right to occupy, use and develop a piece of land during the contractual term of the land use right. The cost of land use right is usually paid in one lump sum at the date the right is granted. The prepayment usually covers the entire duration period of the land use right. The lump sum advance payment is capitalized and recorded as land use right and then charged to expense on a straight-line basis over the period of the right, which is normally 50 years.
	Amortization expense of land use rights was US$259,310, US$224,587 and US$79,404 for the years ended December 31, 2014, 2013 and 2012, respectively, and is included in general and administrative expenses.
Impairment of Long-Lived Assets	(i) Impairment of Long-lived Assets
	Long-lived assets, such as property, plant and equipment, and land use rights, are reviewed for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable.  Recoverability of a long-lived asset or asset group to be held and used is measured by a comparison of the carrying amount of an asset or asset group to the estimated undiscounted future cash flows expected to be generated by the asset or asset group.  If the carrying value of an asset or asset group exceeds its estimated undiscounted future cash flows, an impairment charge is recognized by the amount that the carrying value exceeds the estimated fair value of the asset or asset group.  Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and third party independent appraisals, as considered necessary.  Assets to be disposed are reported at the lower of carrying amount or fair value less costs to sell, and are no longer depreciated.
	No impairment of long-lived assets was recognized for any of the years presented.
Derivative Financial Instruments	(j) Derivative Financial Instruments
	The Company recognizes all derivative instruments as either assets or liabilities at their respective fair values. Changes in the fair value of derivative instruments not designated for hedge accounting are recognized in earnings.
Revenue Recognition	(k) Revenue Recognition
	The Company sells its products primarily to approved distributors.  Revenue is recognized when all of the following conditions are met: persuasive evidence of an arrangement exists, delivery of the products has occurred or services have been rendered, the price is fixed or determinable and collectibility is reasonably assured.  These criteria as they relate to each of the following major revenue generating activities are described below.
	Products sales
	For sales in PRC, acceptance of delivery of the products by the distributors is evidenced by goods receipt notes signed by the distributors' customers (or end users). The distributors accept the products at the time they are delivered to the distributors' customers (or end customers).  Delivery acceptance is evidenced by signed goods receipt notes. The Company has no remaining obligations after the distributors' acceptance of the products. Under the terms of the contracts or purchase orders between the Company and the distributors, the risks and rewards of ownership of the products is transferred to the distributor upon the signing of the goods receipt notes and the distributor has no rights to return the products (other than for defective products). For sales to ROC, delivery of the products occurs at the point in time the product is delivered to the named port of shipment, which is when the risks and rewards of ownership are transferred to the customer. For the years ended December 31, 2014, 2013 and 2012, there were no sales returns from the customers.
	The selling price, which is specified in the sales contracts or purchase orders, is fixed. Under the terms of the sales contract, upon the sale of the products to the distributors and the signing of the good receipts notes, the Company has the legal enforceable right to receive full payment of the sales price. The distributors' obligation to pay the Company is not dependent on the distributors selling the products or collecting cash from their customers (or end customers).
	The Company's sales are net of value added tax (“VAT”) and business tax collected on behalf of tax authorities in respect of product sales. VAT and business tax collected from customers, net of VAT paid for purchases, is recorded as a liability in the balance sheet until it is paid to the tax authorities.
	Service revenue
	The Company used to provide technical assistance and consultation services to manufacturing companies prior to 2014.
	Revenue from technical support was recognized as the services were performed, which was evidenced by signed customer acceptance forms on a monthly basis.  Service revenue was recorded, net of business tax and surcharges, which was levied on the Company's service revenues generated in the PRC at the rate of 5.6%.
Cost of revenues	(l) Cost of revenues
	Cost of revenues represents costs of raw materials (including purchasing, receiving and inspection costs), packaging materials, labor, utilities, depreciation and amortization of manufacturing facilities and warehouses, handling costs, outbound freight and inventory write-down. Depreciation and amortization of manufacturing facilities and warehouses attributable to manufacturing activities is capitalized as part of the cost of inventory, and expensed in costs of revenues when the inventory is sold.
Selling, general and administrative expenses	(m) Selling, general and administrative expenses
	Selling expenses represents primarily costs of payroll, benefits, commissions for sales representatives and advertising expenses.  General and administrative expenses represents primarily payroll and benefits costs for administrative employees, rent and operating costs of office premises, depreciation and amortization of office facilities, and other administrative expenses.
Research and Development Expense	(n) Research and Development Expense
	Research and development costs are expensed as incurred.
Government Grants	(o) Government Grants
	Government grants are recognized when there is reasonable assurance that the Company will comply with the conditions attaching to them and the grants will be received. Government grants for the purpose of giving immediate financial support to the Company with no future related costs are recognized as other income in the Company's consolidated statements of comprehensive income.  Government grants that compensate the acquisition cost of an asset are deducted from the carrying amount of the asset and effectively recognized in profit or loss over the useful life of the asset by way of reduced depreciation expense.
Income Taxes	(p) Income Taxes
	Income taxes are accounted for under the asset and liability method.  Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and tax operating loss and tax credit carryforwards. Deferred income tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the periods in which those temporary differences are expected to be recovered or settled.  The effect of a change in tax rates or tax laws on deferred income tax assets and liabilities is recognized in the consolidated statements of comprehensive income in the period the change in tax rates or tax laws is enacted. A valuation allowance is provided to reduce the carrying amount of deferred income tax assets if it is considered more likely than not that some portion or all of the deferred income tax assets will not be realized.
	The Company recognizes in the consolidated financial statements the impact of a tax position, if that position is more likely than not of being sustained upon examination, based on the technical merits of the position.  Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized.  Changes in recognition or measurement are reflected in the period in which the change in judgment occurs.  The Company has elected to classify interest and penalties related to unrecognized tax benefits, if and when required, as part of interest expense, and general and administration expenses, respectively in the consolidated statements of comprehensive income.
Bills Payable	(q) Bills Payable
	Bills payable represent bills issued by financial institutions to the Company's raw material suppliers. The Company's suppliers receive payments from the financial institutions upon maturity of the bills and the Company is obliged to repay the face value of the bills to the financial institutions.
Employee Benefit Plans	(r) Employee Benefit Plans
	Pursuant to relevant PRC regulations, the Company is required to make contributions to various defined contribution plans organized by municipal and provincial PRC governments. The contributions are made for each PRC employee at rate of approximately 40% on a standard salary base as determined by local social security bureau. Contributions to the defined contribution plans are charged to the consolidated statements of comprehensive income when the related service is provided. For the years ended December 31, 2014, 2013 and 2012, the costs of the Company's contributions to the defined contribution plans amounted to US$1,555,471, US$1,024,728 and US$623,251, respectively.
	For the years ended December 31, 2014 2013 and 2012, 78%, 80% and 60% of costs of employee benefits were recorded in general and administration expenses, respectively, with the remaining portion of costs of employee benefits in selling expenses, research and development expenses and cost of revenues each year.
	The Company has no other obligation for the payment of employee benefits associated with these plans beyond the contributions described above.
Stock Based Compensation	(s) Stock Based Compensation
	The Company measures the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award and recognizes the cost over the period during which the employee is required to provide service in exchange for the award, which generally is the vesting period. The amount of cost recognized is adjusted to reflect any expected forfeitures prior to vesting.  The Company recognizes compensation cost for an award with only service conditions that has a graded vesting schedule on a straight-line basis over the requisite service period for the entire award, provided that the cumulative amount of compensation cost recognized at any date at least equals the portion of the grant-date value of such award that is vested at that date.
Commitments and Contingencies	(t) Commitments and Contingencies
	In the normal course of business, the Company is subject to loss contingencies, such as legal proceedings and claims arising out of its business, that cover a wide range of matters, including, among others, government investigations, shareholder lawsuits, product and environmental liability, and non-income tax matters.  An accrual for a loss contingency is recognized when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated.
Earnings Per Share	(u) Earnings Per Share
	Basic earnings per share (“EPS”) is computed by dividing net income attributable to common stockholders by the weighted average number of common stock outstanding during the year using the two-class method.  Under the two-class method, net income attributable to common stockholders is allocated between common stock and other participating securities based on participating rights in undistributed earnings. Nonvested shares, redeemable Series C and Series D convertible preferred stock are participating securities since the holders of these securities participate in dividends on the same basis as common stockholders.  Diluted EPS is calculated by dividing net income attributable to common stockholders as adjusted for the effect of dilutive common stock equivalent, if any, by the weighted average number of common stock and dilutive common stock equivalent outstanding during the year.  Potential dilutive securities are not included in the calculation of diluted earnings per share if the impact is anti-dilutive.
Segment reporting	(v) Segment reporting
	The Company uses the management approach in determining reportable operating segments.  The management approach consider the internal reporting used by the Company's chief operating decision maker for making operating decisions about the allocation of resources of the segment and the assessment of its performance in determining the Company's reportable operating segments. Management has determined that the Company has one operating segment, which is the modified plastics segment.
Fair Value Measurements	(w) Fair Value Measurements
	The Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible. The Company determines fair value based on assumptions that market participants would use in pricing an asset or liability in the principal or most advantageous market. When considering market participant assumptions in fair value measurements, the following fair value hierarchy distinguishes between observable and unobservable inputs, which are categorized in one of the following levels:
	-       Level 1 Inputs: Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date.
	-       Level 2 Inputs: Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability.
	-       Level 3 Inputs: Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at measurement date.
	The level in the fair value hierarchy within which a fair value measurement in its entirety falls is based on the lowest level input that is significant to the fair value measurement in its entirety.
	-	The fair value of restricted cash and time deposits as of December 31, 2014 and 2013 are categorized as Level 2 measurement.
	-	The fair value of the warrants liability as of December 31, 2013 is categorized as Level 3 measurement.
	-	The fair value of foreign currency forward contracts as of December 31, 2014 is categorized as Level 3 measurement.
	Except for the foreign currency forward contracts and warrants liability, which was measured at fair value on a recurring basis as of December 31, 2014 and 2013, the Company did not have any financial assets and liabilities or nonfinancial assets and liabilities that are measured and recognized at fair value on a recurring or nonrecurring basis as of December 31, 2014 and 2013.  Management used the following methods and assumptions to estimate the fair values of financial instruments at the balance sheet dates:
	-       Short-term financial instruments, including cash and cash equivalents, restricted cash, time deposits, accounts receivable, amounts due from a related party, short-term bank loans, bills payable, accounts payable and accrued expenses and other current liabilities- carrying amounts approximate fair values because of the short maturity of these instruments.
	-       Long-term bank loans-fair value is based on the amount of future cash flows associated with each loan discounted at the Company's current borrowing rate for similar debt instruments of comparable terms. The carrying value of the long-term bank loans approximate their fair values as the long-term bank loans carry interest rates which approximate rates currently offered by the Company's banks for similar debt instruments of comparable maturities.
	-       Notes payable-fair values of the Company's notes payable are estimated based on quoted market prices which are categorized as Level 1 measurement in the fair value hierarchy. As of December 31, 2014, the carrying amount and estimated fair value of the notes payable were US$148,617,057 and US$152,344,500, respectively.
	-       Derivative liabilities on warrants liabilities- fair values are determined using an option-pricing model which considers the following significant inputs: the Company's stock price, risk-free interest rate and expected volatility of the Company's stock price over the term of the derivative liabilities.
	-       Derivative liabilities on foreign currency forward contracts- fair values are determined using a discount cash flow model, which discounts the difference between the forward contract exchange rate from the quoted curve and the contract rate multiplied by the notional amounts. It considers the following significant inputs: risk-free rate and foreign exchange rate.
Recently Issued Accounting Standards	(x) Recently Issued Accounting Standards
	The Financial Accounting Standards Borad issued Accounting Standards Update ( "ASU") No. 2014-09, Revenue from Contracts with Customers, in May 2014. ASU 2014-09 requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. An entity should also disclose sufficient quantitative and qualitative information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The new standard is effective for annual reporting periods beginning after December 15, 2017. The Company will implement the provisions of ASU 2014-09 as of January 1, 2018. The Company has not yet determined the impact of the new standard on its current policies for revenue recognition.

Description_of_business_and_si1

Description of business and significant concentrations and risks (Tables)	12 Months Ended
	Dec. 31, 2014
Description Of Business And Significant Concentrations And Risks [Abstract]
Schedule of Sales Concentrations by Major Distributors	(in millions, except percentage)	Years Ended December 31,
		2014						2013					2012
		US$			%			US$		%			US$		%
	Distributor A, located in PRC		176.6			15.9	%		209.4		19.9	%		196.1		32.7	%
	Distributor B, located in PRC		139.8			12.6	%		138.1		13.1	%		88.5		14.8	%
	Distributor C, located in PRC		138.5			12.5	%		63.8		6.1	%		-		-	%
	Distributor D, located in PRC		136.4			12.3	%		250.7		23.9	%		61.6		10.3	%
	Distributor E, located in PRC		134			12.1	%		136		12.9	%		85.4		14.2	%
	Direct customer F, located in ROK		140.1			12.6	%		-		-			-		-
	Total		865.4			78	%		798		75.9	%		431.6		72	%
Schedule of Cash and Cash Equivalents		December 31,
		2014		2013
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC		311,377,750		389,522,815
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.		770,704		84,011
	Financial Institutions in the PRC		17,139		-
	Financial Institution in Hong Kong Special Administrative Region (“Hong Kong SAR”)		1,366,224		847,559
	Financial Institution in Macau Special Administrative Region (“Macau SAR”)		47,868		-
	Financial Institution in Dubai, United Arab Emirates (“UAE”)		481,179		-
	Euro denominated bank deposits with:
	Financial institution in Hong Kong SAR		83,017		143,890
	HK dollar denominated bank deposits with:
	Financial institution in Hong Kong		6,723		-
	Dirham denominated bank deposits with:
	Financial institution in Dubai, UAE		112,815		-

Summary_of_significant_account2

Summary of significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2014
Summary of significant accounting policies [Abstract]
Schedule of Estimated Useful Lives of Property, Plant and Equipment		Estimated
		Useful Life
	Workshops and buildings	39 years
	Machinery, equipment and furniture	5-10 years
	Motor vehicles	5 years

Accounts_receivable_Tables

Accounts receivable (Tables)	12 Months Ended
	Dec. 31, 2014
Accounts receivable [Abstract]
Schedule of Accounts Receivable		December 31,
		2014		2013
		US$		US$
	Accounts receivable	204,108,050		282,466,580
	Allowance for doubtful accounts	(109,912	)	(145,761		)
	Accounts receivable, net	203,998,138		282,320,819
Schedule of Movements in Allowance for Doubtful Accounts		Year ended December 31,
		2014			2013
		US$			US$
	Balance at the beginning of the year	(145,761		)	(148,054		)
	Reversal of bad debt allowance	35,849			2,293
	Balance at the end of the year	(109,912		)	(145,761		)

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2014
Inventories [Abstract]
Schedule of Inventories		December 31,
		2014		2013
		US$		US$
	Raw materials		241,853,814		135,120,514
	Work in progress		207,181		2,551,621
	Finished goods		7,736,249		7,213,553
	Total inventories		249,797,244		144,885,688

Prepaid_expenses_and_other_cur1

Prepaid expenses and other current assets (Tables)	12 Months Ended
	Dec. 31, 2014
Prepaid expenses and other current assets [Abstract]
Schedule of Prepaid Expense and Other Assets Current		December 31,
		2014		2013
		US$		US$
	Advances to suppliers		168,614		920,277
	Value added taxes receivables		6,407,547		3,924,767
	Interest receivable		3,351,672		2,405,666
	Others		1,325,995		1,167,433
	Total prepaid expenses and other current assets		11,253,828		8,418,143

Property_plant_and_equipment_n1

Property, plant and equipment, net (Tables)	12 Months Ended
	Dec. 31, 2014
Property, plant and equipment, net [Abstract]
Schedule of Property, Plant and Equipment		December 31,
		2014			2013
		US$			US$
	Machinery, equipment and furniture		209,509,700			209,921,805
	Motor vehicles		1,854,985			1,580,877
	Workshops and buildings		79,009,346			62,217,256
	Construction in progress		93,970,716			4,807,666
	Total property, plant and equipment		384,344,747			278,527,604
	Less: accumulated depreciation		(66,020,147	)		-44,685,869
	Property, plant and equipment, net		318,324,600			233,841,735
Schedule of the Allocation of Depreciation Expense on Property, Plant and Equipment
		Years Ended December 31,
		2014			2013		2012
		US$			US$		US$
	Cost of revenues		19,407,668			18,578,088		9,363,351
	General and administrative expenses		1,155,419			958,976		232,576
	Research and development expenses		2,094,496			1,659,072		1,029,706
	Total depreciation expense		22,657,583			21,196,136		10,625,633

Borrowings_Tables

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2014
Borrowings [Abstract]
Schedule of Short-term Loans				December 31,
				2014			2013
				US$			US$
	Unsecured loans				47,223,028			169,027,897
	Loans secured by accounts receivable				40,292,686			100,434,445
	Loans secured by bank deposits				-			36,960,867
	Current portion of long-term bank loans (note b)				12,219,708			-
	Total short-term bank loans, including current portion of long-term bank loans	(i)			99,735,422			306,423,209
	Interest-free loan secured by land use rights	(ii)			-			8,259,411
	Total short-term loans, including current portion of long-term bank loans				99,735,422			314,682,620
	(i)	As of December 31, 2014 and 2013, the Company's short-term bank loans (including the current portion of long-term bank loans) bear a weighted average interest rate of 5.7% and 5.9% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms.
	(ii)	The Company obtained an interest-free loan in the amount of RMB50.0 million from a company affiliated with the People's Government of Shunqing District, Nanchong City, Sichuan Province (“Shunqing Government”). The loan was issued to support the Company's construction of a production plant in Sichuan. The Company repaid the loan in July 2014.
Schedule of Long-Term Debt			December 31,
			2014			2013
			US$			US$
	Secured loans			70,000,000			-
	Unsecured loans			116,494,154			-
	Less: current portion			12,219,708			-
	Total long-term bank loans, excluding current portion			174,274,446			-

Notes_Payable_Tables

Notes Payable (Tables)	12 Months Ended
	Dec. 31, 2014
Notes Payable [Abstract]
Schedule of Debt Redemption	Year	Redemption Price
	2017	105.875	%
	2018	102.938	%

Accrued_expenses_and_other_cur1

Accrued expenses and other current liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Accrued expenses and other current liabilities [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities		December 31,
		2014		2013
		US$		US$
	Payables for purchase of property, plant and equipment		7,234,607		44,510,678
	Accrued freight expenses		1,688,431		5,010,341
	Accrued interest expenses		9,031,741		1,171,203
	Others		6,529,804		5,200,782
	Total accrued expenses and other current liabilities		24,484,583		55,893,004

Related_party_transactions_Tab

Related party transactions (Tables)	12 Months Ended
	Dec. 31, 2014
Related party transactions [Abstract]
Schedule of Significant Related Party Transactions		Years Ended December 31,
		2014			2013			2012
		US$			US$			US$
	Costs and expenses resulting from transactions with related parties:
	Rental expenses for plant and office space			791,460			801,715		634,457
Schedule of Amounts Due From To Related Parties		December 31,
		2014			2013
		US$			US$
	Amounts due from a related party:
	Prepaid rental expenses to Xinda High-Tech			220,262			225,752
Schedule of Plant and Office Buildings in Harbin	Premise Leased		Area (M2)			Annual Rental Fee (US$)		Period of Lease
	Facility			3,134			16,231	Between January 1, 2014 and December 31, 2014
	Facility			200			6,492	Between August 17, 2014 and August 16, 2015

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Taxes [Abstract]
Schedule of Components of Income Before Income Taxes		Years Ended December 31,
		2014					2013					2012
		US$					US$					US$
	US		(4,957,190		)			(4,768,725		)			625,840
	BVI		(16,070,146		)			(7,685		)			(4,208	)
	Hong Kong		(973,523		)			(815,408		)			(568,268	)
	Dubai		83,267,935					-					-
	PRC, excluding Hong Kong		77,775,570					186,127,783					115,530,576
	Total income before taxes		139,042,646					180,535,965					115,383,940
Schedule of Income Tax Expense (Benefit)		Years Ended December 31,
		2014				2013				2012
		US$				US$				US$
	Current income tax expense-PRC		20,089,436				47,559,763				31,091,188
	Current income tax expense-US		195,598				1,017,585				-
	Deferred income tax benefit-PRC		(2,018,757	)			(1,880,228	)			(1,574,995	)
	Total income tax expense		18,266,277				46,697,120				29,516,193
Schedule of Effective Income Tax Rate Reconciliation		Years Ended December 31,
			2014				2013					2012
			US$				US$					US$
	PRC statutory income tax rate		25	%			25	%				25	%
	Increase (decrease) in effective income tax rate resulting from:
	Tax rate differential on entities not subject to PRC income tax		(12.1	)%			(0.1	)%				0.2	%
	Non-deductible expenses (non-taxable income)		0.6	%			0.8	%				(0.4	)%
	Preferential tax rate		(3.3	)%			(0.7	)%				(0.0	)%
	Change in valuation allowance		0.5	%			(0.0	)%				(0.4	)%
	Others		2.4	%			0.9	%				1.2	%
	Effective income tax rate		13.1	%			25.9	%				25.6	%
Schedule of the Principal Components of Deferred Income Tax Assets and Deferred Income Tax Liabilities		December 31,
		2014						2013
		US$						US$
	Deferred income tax assets:
	Tax loss carryforwards			727,711						73,182
	Less: valuation allowance			-727,711						(73,182)
	Deferred income tax assets, net			-						-
	Deferred income tax liabilities:
	Net assets of Research Institute granted to Research Center			1,185,638						3,134,131
	Forward contract			-604						-
	Property, plant and equipment			15,766,517						16,294,575
	Total deferred income tax liabilities			16,951,551						19,428,706
Schedule of Deferred Tax Asset Valuation Allowance			Years Ended December 31,
			2014			2013			2012
			US$			US$			US$
	Balance at the beginning of the year		73,182			556,677			1,005,361
	Expiration due to liquidation		-			-437,762			-
	Additions of valuation allowance		662,151			72,305			41,110
	Reduction of valuation allowance		(7,622	)		-118,038			-489,794
	Balance at the end of the year		727,711			73,182			556,677
Reconciliation of Unrecognized Tax Benefits		Year ended December 31,
		2014			2013			2012
		US$			US$			US$
	Balance at beginning of year	8,807,490			-			-
	Increase related to current year tax positions	5,801,768			8,807,490			-
	Balance at end of year	14,609,258			8,807,490			-

Warrants_Tables

Warrants (Tables)	12 Months Ended
	Dec. 31, 2014
Warrants [Abstract]
Summary of Outstanding Warrants	Warrants	Exercise Price			Number of Warrants				Remaining
					Outstanding				Contractual Life
		US$							Years
	Series A investor warrants		4.9			1,320,696				0.92
	Series A placement agent warrants		5.5			117,261				0.92
	Total					1,437,957
Warrants Fair Value Assumptions		Series A Investor			Series A Placement
		Warrants			Agent Warrants
	Volatility		28.9	%		28.9	%
	Expected dividends yield		0	%		0	%
	Fair value of underlying common stock (per share)		5.26			5.26
	Risk-free interest rate (per annum)		0.16	%		0.16	%
Schedule of Changes in Fair Value of Warrants		Series A investor				Series A placement				Series C placement			Total
		warrants				agent warrants				agent warrants
		US$				US$				US$			US$
	As of December 31, 2012		915,189				66,077				27,484			1,008,750
	Change in fair value		89,721				(7,586	)			(27,484	)		54,651
	As of December 31, 2013		1,004,910				58,491				-			1,063,401
	Change in fair value		1,929,565				(58,491	)			-			1,871,074
	Exercise of warrants		(2,934,475	)			-				-			(2,934,475	)
	As of December 31, 2014		-				-				-			-

Stock_based_compensation_Table

Stock based compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Stock based compensation [Abstract]
Schedule of Stock Options Activity		Number of Nonvested			Weighted Average
		Shares			Grant date Fair Value
						US$
	Outstanding as of December 31, 2011		106,405			6.03
	Granted		465,000			4.41
	Vested		(36,405	)		4.39
	Forfeited		(22,000	)		6.37
	Outstanding as of December 31, 2012		513,000			4.66
	Granted		892,936			4.52
	Vested		(311,361	)		4.74
	Forfeited		(4,000	)		4.37
	Outstanding as of December 31, 2013		1,090,575			4.89
	Granted		291,948			5.13
	Vested		(674,205	)		4.58
	Forfeited		(61,030	)		4.47
	Outstanding as of December 31, 2014		647,288			5.00
	Expected to vest as of December 31, 2014		647,288			5.00
Schedule of Nonvested Share Activity		Number of			Weighted Average
		Options			Exercise Price
		Outstanding			US$
	Outstanding as of December 31, 2011		297,000			8.01
	Expired		(148,500	)		8.01
	Outstanding as of December 31, 2012		148,500			8.01
	Expired		(148,500	)		8.01
	Outstanding as of December 31, 2013		-			-

Earnings_per_share_Tables

Earnings per share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings per share [Abstract]
Calculation of Basic and Diluted Earnings Per Share		Years Ended December 31,
		2014			2013			2012
		US$			US$			US$
	Numerator:
	Net income		120,776,369			133,838,845			85,867,747
	Less: Dividends to Series C convertible preferred stockholders		-			-			(110	)
	Net income available to the Company's stockholders		120,776,369			133,838,845			85,867,637
	Less:
	Earnings allocated to participating Series C convertible preferred stock		-			-			(478	)
	Earnings allocated to participating Series D convertible preferred stock		(29,552,623	)		(33,229,887	)		(21,527,155	)
	Earnings allocated to participating nonvested shares		(1,026,493	)		(1,347,073	)		(364,965	)
	Net income for basic and diluted earnings per share		90,197,253			99,261,885			63,975,039	)
	Denominator:
	Denominator for basic and diluted earnings per share		48,833,434			47,794,028			47,549,275
	Earnings per common share:
	Basic and diluted earnings per common share		1.85			2.08			1.35
Summary of Potentially Dilutive Securities		Years Ended December 31,
		2014			2013			2012
		US$			US$			US$
	Numerator:
	Shares issuable upon conversion of Series D convertible preferred stocks		16,000,000			16,000,000			16,000,000
	Shares issuable upon exercise of Series A investor warrant		-			1,320,696			1,320,696
	Shares issuable upon exercise of Series A placement agent warrant		-			117,261			117,261
	Shares issuable upon exercise of Series C placement agent warrant		-			-			166,667
	Shares issuable upon exercise of stock options		-			-			148,500

Commitments_and_contingencies_

Commitments and contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and contingencies [Abstract]
Schedule of Future Minimum Rental Payments		US$
	Years ending December 31,
	2015		1,475,625
	2016		1,100,034
	2017		842,564
	2018		775,613
	2019 and thereafter		-

Revenues_Tables

Revenues (Tables)	12 Months Ended
	Dec. 31, 2014
Revenues [Abstract]
Revenues		Years Ended December 31,
		2014		2013		2012
		US$		US$		US$
	Modified Polyamide 66 (PA66)		192,374,156		195,471,978		71,651,635
	Modified Polyamide 6 (PA6)		223,122,191		216,210,438		80,491,488
	Plastic Alloy		400,306,257		296,635,139		123,684,058
	Modified Polypropylene (PP)		232,421,229		286,263,653		290,535,039
	Modified Acrylonitrile butadiene styrene (ABS)		36,804,599		32,440,913		25,348,218
	Polyoxymethylenes (POM)		3,606,000		2,835,335		569,633
	Polyphenylene Oxide (PPO)		14,830,647		13,570,734		-
	Polylactide (PLA)		13,952		-		-
	Others		7,206,661		5,373,656		-
	Subtotal		1,110,685,692		1,048,801,846		592,280,071
	Service revenue		-		2,014,518		7,538,897
	Total Revenue		1,110,685,692		1,050,816,364		599,818,968

Selected_Quarterly_Financial_I1

Selected Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 31, 2014
Selected Quarterly Financial Information [Abstract]
Summary of the Company's quarterly financial information
		Fourth Quarter		Third Quarter		Second Quarter		First Quarter
	2014:00:00
	Revenues	$	307.1	$	315.7	$	264.2	$	223.6
	Gross profit	$	58.1	$	65.4	$	52.3	$	46.6
	Net income	$	35.7	$	43.2	$	19.8	$	22
	Earnings per share
	Basic	$	0.54	$	0.66	$	0.3	$	0.34
	Diluted	$	0.54	$	0.62	$	0.3	$	0.34
		Fourth Quarter		Third Quarter		Second Quarter		First Quarter
	2013:00:00
	Revenues	$	384.5	$	293.1	$	202.2	$	171
	Gross profit	$	91.3	$	65.7	$	37.2	$	29.2
	Net income	$	57.4	$	41.1	$	20.8	$	14.5
	Earnings per share
	Basic and diluted EPS	$	0.89	$	0.64	$	0.32	$	0.23

Geographic_Revenue_Information1

Geographic Revenue Information (Tables)	12 Months Ended
	Dec. 31, 2014
Geographic Revenue Information [Abstract]
Summary of revenues from geographic areas		Years Ended December 31,
		2014		2013		2012
		US$		US$		US$
	Revenues (in US$ millions)
	PRC (excluding HK SAR, Macau SAR and Taiwan)		970.5		1,050.80		599.8
	ROK		140.1		-		-
	Total		1,110.60		1,050.80		599.8

Description_of_business_and_si2

Description of business and significant concentrations and risks (Sales and Purchase Concentration) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Concentration Risk [Line Items]
Revenues	$307,100,000	$315,700,000	$264,200,000	$223,600,000	$384,500,000	$293,100,000	$202,200,000	$171,000,000	$1,110,685,692	$1,050,816,364	$599,818,968
Customer Concentration Risk [Member] | Revenues [Member] | Distributor A [Member]
Concentration Risk [Line Items]
Revenues									176,600,000	209,400,000	196,100,000
Concentration risk, percentage									15.90%	19.90%	32.70%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor B [Member]
Concentration Risk [Line Items]
Revenues									139,800,000	138,100,000	88,500,000
Concentration risk, percentage									12.60%	13.10%	14.80%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor C [Member]
Concentration Risk [Line Items]
Revenues									138,500,000	63,800,000
Concentration risk, percentage									12.50%	6.10%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor D [Member]
Concentration Risk [Line Items]
Revenues									136,400,000	250,700,000	61,600,000
Concentration risk, percentage									12.30%	23.90%	10.30%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor E [Member]
Concentration Risk [Line Items]
Revenues									134,000,000	136,000,000	85,400,000
Concentration risk, percentage									12.10%	12.90%	14.20%
Customer Concentration Risk [Member] | Revenues [Member] | Direct Customer F [Member]
Concentration Risk [Line Items]
Revenues									140,100,000
Concentration risk, percentage									12.60%
Customer Concentration Risk [Member] | Revenues [Member] | Major Distributors Aggregate [Member]
Concentration Risk [Line Items]
Revenues									$865,400,000	$798,000,000	$431,600,000
Concentration risk, percentage									78.00%	75.90%	72.00%
Equipment Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, number of customers/distributors									2	2	2
Concentration risk, percentage									99.60%	34.60%	99.90%
Equipment Supplier Concentration Risk [Member] | Majority Owner of Equipment Distributor [Member]
Concentration Risk [Line Items]
Concentration risk, percentage									1.90%	34.60%	99.90%
Raw Material Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, number of customers/distributors									8	8	8
Concentration risk, percentage									88.00%	61.00%	52.00%
Raw Material Supplier Concentration Risk [Member] | Majority Owner of Equipment Distributor [Member]
Concentration Risk [Line Items]
Concentration risk, percentage									0.40%	13.00%	22.00%

Description_of_business_and_si3

Description of business and significant concentrations and risks (Cash Concentration) (Details)

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

RMB denominated bank deposits with financial institutions in the PRC [Member]

RMB denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with a financial institution in the U.S. [Member]

U.S. dollar denominated bank deposits with a financial institution in the U.S. [Member]

U.S. dollar denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong Special Administrative Region ("Hong Kong SAR") [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong Special Administrative Region ("Hong Kong SAR") [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong Special Administrative Region ("Hong Kong SAR") [Member]

U.S. dollar denominated bank deposits with Financial Institution in Macau Special Administrative Region ("Macau SAR") [Member]

U.S. dollar denominated bank deposits with Financial Institution in Macau Special Administrative Region ("Macau SAR") [Member]

U.S. dollar denominated bank deposits with Financial Institution in Dubai,United Arab Emirates ("UAE") [Member]

U.S. dollar denominated bank deposits with Financial Institution in Dubai,United Arab Emirates ("UAE") [Member]

Euro denominated bank deposits with a financial institution in Hong Kong SAR [Member]

Euro denominated bank deposits with a financial institution in Hong Kong SAR [Member]

HK dollar denominated bank deposits with Financial institution in Hong Kong [Member]

HK dollar denominated bank deposits with Financial institution in Hong Kong [Member]

Dirham denominated bank deposits with Financial institution in Dubai, UAE [Member]

Dirham denominated bank deposits with Financial institution in Dubai, UAE [Member]

MOP dollar denominated bank deposits with Financial Institution in Macau SAR [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

HKD

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MOP

Restricted Cash and Cash Equivalents Items [Line Items]

Cash, cash equivalents, restricted cash and time deposits maintained at banks

$311,377,750

$389,522,815

$770,704

$84,011

$17,139

$1,366,224

$847,559

$47,868

$481,179

$83,017

$143,890

$6,723

$112,815

Cash balance insured by the government authority

500,000

500,000

Summary_of_significant_account3

Summary of significant accounting policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restricted Cash and Cash Equivalents Items [Line Items]
Effective interest rate per annum of time deposits	300.00%	310.00%
Restricted cash	$12,545,772	$13,708,971
Land use right period	50 years
Amortization expense of land use rights	259,310	224,587	79,404
Service revenue generated in the PRC rate	5.60%
Recognized tax positions percent likely to be recognized	50.00%
Employer contribution percentage	40.00%
Employer contributions	1,555,471	1,024,728	623,251
Percentage of costs of employee benefits recorded in general and administration expenses	78.00%	80.00%	60.00%
Short-term bank deposits pledged as collateral for bills payable relating to purchase of raw materials [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	11,868,855	3,964,518
Short-term bank deposits pledged as collateral for letter of credit relating to purchase of raw materials [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	676,917	237,871
Short-term bank deposits pledged as collateral for short-term bank borrowings [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash		9,506,582
Long-term bank borrowings pledged as collateral for issuance of letter of guarantee [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$17,728,782

Summary_of_significant_account4

Summary of significant accounting policies (Estimated Useful Life of Property, Plant and Equipment) (Details)	12 Months Ended
	Dec. 31, 2014
Workshops and buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	39 years
Machinery, equipment and furniture [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Machinery, equipment and furniture [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years

Summary_of_significant_account5

Summary of significant accounting policies (Fair Value Measurements) (Details) (USD $)	Dec. 31, 2014
Carrying amount [Member]
Fair Value Measurements [Line Items]
Notes payable	$148,617,057
Estimated fair value [Member]
Fair Value Measurements [Line Items]
Notes payable	$152,344,500

Accounts_receivable_Details

Accounts receivable (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Accounts receivable [Abstract]
Accounts receivable	$204,108,050	$282,466,580
Allowance for doubtful accounts	-109,912	-145,761
Accounts receivable, net	203,998,138	282,320,819
Notes receivable	921,907	7,481,629
Accounts receivable pledged as collateral for short-term bank loans	$50,473,063	$133,778,940

Accounts_receivable_Movements_

Accounts receivable (Movements in Allowance for Doubtful Accounts) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Accounts receivable [Abstract]
Balance at the beginning of year	($145,761)	($148,054)
Reversal of bad debt allowance	35,849	2,293
Balance at the end of year	($109,912)	($145,761)

Inventories_Details

Inventories (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Inventories [Abstract]
Raw materials	$241,853,814	$135,120,514
Work in progress	207,181	2,551,621
Finished goods	7,736,249	7,213,553
Total inventories	$249,797,244	$144,885,688

Prepaid_expenses_and_other_cur2

Prepaid expenses and other current assets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Prepaid expenses and other current assets [Abstract]
Advances to suppliers	$168,614	$920,277
Value added taxes receivables	6,407,547	3,924,767
Interest receivable	3,351,672	2,405,666
Others	1,325,995	1,167,433
Total prepaid expenses and other current assets	$11,253,828	$8,418,143

Property_plant_and_equipment_n2

Property, plant and equipment, net (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$384,344,747	$278,527,604
Less accumulated depreciation	-66,020,147	-44,685,869
Property, plant and equipment, net	318,324,600	233,841,735
Machinery, equipment and furniture [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	209,509,700	209,921,805
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	1,854,985	1,580,877
Workshops and buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	79,009,346	62,217,256
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$93,970,716	$4,807,666

Property_plant_and_equipment_n3

Property, plant and equipment, net (Allocated Depreciation Expense) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Depreciation expenses	$22,657,583	$21,196,136	$10,625,633
Interest costs capitalized as a component of the cost of construction in progress	113,317
Cost of revenues [Member]
Property, Plant and Equipment [Line Items]
Depreciation expenses	19,407,668	18,578,088	9,363,351
General and administration expenses [Member]
Property, Plant and Equipment [Line Items]
Depreciation expenses	1,155,419	958,976	232,576
Research and development expenses [Member]
Property, Plant and Equipment [Line Items]
Depreciation expenses	$2,094,496	$1,659,072	$1,029,706

Prepayments_to_equipment_suppl1

Prepayments to equipment suppliers (Details)

12 Months Ended

1 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

USD ($)

CNY

Property, Plant and Equipment [Member]

Property, Plant and Equipment [Member]

Working Capital [Member]

Working Capital [Member]

Equipment [Member]

Equipment [Member]

Equipment [Member]

Equipment [Member]

Testing equipment [Member]

Testing equipment [Member]

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

item

Long-term deposits for equipment purchase [Line Items]

Amount will be invested for the construction of Sichuan plant

$290.10

1,800

$96.70

600

$94.10

584

Total consideration for purchase of equipment

$14.50

89.7

$170.70

1,059.10

$262.60

1,629.30

$11.60

71.8

Number of product line purchases under contract

70

70

Percentage of total consideration paid for purchase of equipment

65.00%

65.00%

80.00%

80.00%

Foreign_currency_forward_contr1

Foreign currency forward contracts (Details)	12 Months Ended			7 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jun. 18, 2014	Jun. 18, 2014	Mar. 14, 2014	Mar. 14, 2014
	USD ($)	USD ($)	USD ($)	Foreign Currency Forward Contracts [Member]	Foreign Currency Forward Contracts [Member]	Foreign Currency Forward Contracts [Member]	Foreign Currency Forward Contracts [Member]	Foreign Currency Forward Contracts [Member]
				USD ($)	USD ($)	CNY	USD ($)	CNY
Derivatives, Fair Value [Line Items]
Amount of derivative contract					$50,000,000		$80,000,000
Amount of derivative contract exchanged						315,000,000		492,000,000
Payment owed for settlement under foreign currency exchange contract					1,100,000
Changes in fair value of the foreign currency forward contract	-2,435			2,400
Losses on foreign currency forward contracts	$1,067,162

Borrowings_Current_Details

Borrowings (Current) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
Short-term Debt [Line Items]
Total short-term bank loans, including current portion of long-term bank loans	$99,735,422	[1]	$306,423,209	[1]
Interest-free loan secured by land use rights		[2]	8,259,411	[2]
Total short-term loans, including current portion of long-term bank loans	99,735,422		314,682,620
Weighted average interest rate	5.70%		5.90%
Unsecured loans [Member]
Short-term Debt [Line Items]
Total short-term bank loans, including current portion of long-term bank loans	47,223,028		169,027,897
Loans secured by accounts receivable [Member]
Short-term Debt [Line Items]
Total short-term bank loans, including current portion of long-term bank loans	40,292,686		100,434,445
Loans secured by bank deposits [Member]
Short-term Debt [Line Items]
Total short-term bank loans, including current portion of long-term bank loans			36,960,867
Current portion of long-term loan [Member]
Short-term Debt [Line Items]
Total short-term bank loans, including current portion of long-term bank loans	12,219,708
Interest-free loan secured by land use rights [Member]
Short-term Debt [Line Items]
Debt instrument, face amount			$50,000,000
[1]	As of December 31, 2014 and 2013, the Company's short-term bank loans (including the current portion of long-term bank loans) bear a weighted average interest rate of 5.7% and 5.9% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms.
[2]	The Company obtained an interest-free loan in the amount of RMB50.0 million from a company affiliated with the People's Government of Shunqing District, Nanchong City, Sichuan Province (bShunqing Governmentb). The loan was issued to support the Company's construction of a production plant in Sichuan. The Company repaid the loan in July 2014.

Borrowings_Noncurrent_Details

Borrowings (Non-current) (Details)

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Jun. 12, 2014

Dec. 29, 2014

Dec. 16, 2014

Dec. 11, 2014

Dec. 11, 2014

Sep. 28, 2014

Jul. 02, 2014

Jun. 23, 2014

Jun. 23, 2014

15-May-14

15-May-14

Jan. 17, 2014

Jan. 17, 2014

Apr. 30, 2014

Apr. 30, 2014

Mar. 31, 2014

Mar. 31, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2014

Jul. 01, 2014

Jul. 01, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 11, 2014

Dec. 11, 2014

Dec. 11, 2014

Dec. 11, 2014

USD ($)

CNY

USD ($)

Secured Loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Unsecured loans [Member]

Line of credit with remaining terms less than 12 months [Member]

Line of credit with remaining terms less than 12 months [Member]

Line of credit with remaining terms beyond 12 months [Member]

Line of credit with remaining terms beyond 12 months [Member]

Unsecured loans with half year maturity [Member]

Unsecured loans with half year maturity [Member]

Unsecured loans with 385-day maturity [Member]

Unsecured loans with 385-day maturity [Member]

USD ($)

USD ($)

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

Debt Instrument [Line Items]

Secured loans

$70,000,000

Unsecured loans

116,494,154

Less: current portion

12,219,708

Total long-term bank loans, excluding current portion

174,274,446

Percentage of Renminbi benchmark interest rates per annum

110.00%

110.00%

Initial term of loan

3 years

18 months

2 years

2 years

2 years

2 years

2 years

2 years

2 years

2 years

2 years

15 months

15 months

15 months

15 months

2 years

2 years

6 months

6 months

385 days

385 days

Number of debt instruments obtained

3

4

4

2

2

2

2

7

7

Aggregated principal amount

70,000,000

76,400,000

31,800,000

197,000,000

7,300,000

45,000,000

8,100,000

50,000,000

24,200,000

150,000,000

8,100,000

50,000,000

8,100,000

50,000,000

52,900,000

328,000,000

19,700,000

122,000,000

200,000

1,000,000

200,000

1,000,000

Debt instrument, interest rate

6.60%

6.60%

6.77%

6.77%

6.77%

6.77%

6.15%

6.15%

6.15%

6.15%

6.15%

6.15%

6.15%

6.15%

6.60%

6.60%

6.60%

6.60%

Number of debt instruments paid off

4

2

3

Variable rate basis

LIBOR

LIBOR

Variable rate basis (as a percent)

2.55%

2.55%

Spread over variable rate

2.60%

1.70%

Interest rate reset period

3 months

3 months

Security Deposit

17,700,000

Total lines of credit

441,500,000

2,739,200,000

Unusued lines of credit

$150,900,000

936,200,000

$16,600,000

102,900,000

Notes_Payable_Details

Notes Payable (Details) (Guaranteed Senior Notes Due 2019 [Member], USD $)	0 Months Ended	12 Months Ended
	Feb. 04, 2014	Dec. 31, 2014
Debt Instrument, Redemption [Line Items]
Principal amount of debt	$150,000,000
Notes payable, interest rate	11.75%
Maturity date	4-Feb-19
Issuance price percentage	99.08%
Payment start date	4-Aug-14
Net proceeds from Guaranteed Senior Notes	143,500,000
Deferred issuance costs	4,900,000
Interest expense		$16,870,122
Change of Control [Member]
Debt Instrument, Redemption [Line Items]
Redemption price, percentage of principal	101.00%
Prior to February 4, 2017 [Member] | Debt redeemed in whole [Member]
Debt Instrument, Redemption [Line Items]
Redemption price, percentage of principal	100.00%
Percentage of principal amount redeemed	100.00%
Redemption period end date	4-Feb-17
Prior to February 4, 2017 [Member] | Debt redeemed up to 35% [Member]
Debt Instrument, Redemption [Line Items]
Redemption price, percentage of principal	111.75%
Percentage of principal amount redeemed	35.00%
Required percentage of principal remaining outstanding after redemption	65.00%
Redemption period end date	4-Feb-17
February 4, 2017 to February 4, 2018 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price, percentage of principal	105.88%
February 4, 2018 to February 4, 2019 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price, percentage of principal	102.94%

Accrued_expenses_and_other_cur2

Accrued expenses and other current liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Accrued expenses and other current liabilities [Abstract]
Payables for purchase of property, plant and equipment	$7,234,607	$44,510,678
Accrued freight expenses	1,688,431	5,010,341
Accrued interest expenses	9,031,741	1,171,203
Others	6,529,804	5,200,782
Accrued expenses and other current liabilities	$24,484,583	$55,893,004

Related_party_transactions_Sch

Related party transactions (Schedule of Significant Related Party Transactions) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related party transactions [Abstract]
Rental expenses for plant and office spaces	$791,460	$801,715	$634,457

Related_party_transactions_Sch1

Related party transactions (Schedule of Amounts Due From Related Parties) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Prepaid rental expenses to related party	$220,262	$225,752
Xinda High-Tech [Member]
Related Party Transaction [Line Items]
Prepaid rental expenses to related party	$220,262	$225,752

Related_party_transactions_Sch2

Related party transactions (Schedule of Plant and Office Buildings in Harbin) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
	sqm
Plant and Office Building 1 [Member]
Related Party Transaction [Line Items]
Annual Rental Fee	$665,440
Area (Square Meters)	20,250
Lease start date	1-May-12
Lease expiration period	31-Dec-13
Office Building 1 [Member]
Related Party Transaction [Line Items]
Annual Rental Fee	8,115
Area (Square Meters)	250
Lease start date	1-Jan-12
Lease expiration period	31-Dec-13
Office Building 2 [Member]
Related Party Transaction [Line Items]
Annual Rental Fee	110,173
Area (Square Meters)	3,394
Lease start date	1-May-12
Lease expiration period	30-Apr-13
Office Building 3 [Member]
Related Party Transaction [Line Items]
Annual Rental Fee	110,173
Area (Square Meters)	3,394
Lease start date	1-May-13
Lease expiration period	31-Dec-13
Office Building 4 [Member]
Related Party Transaction [Line Items]
Annual Rental Fee	775,613
Area (Square Meters)	23,894
Lease start date	1-Jan-14
Lease expiration period	31-Dec-18
Facility [Member] | Mr. Han's son [Member]
Related Party Transaction [Line Items]
Annual Rental Fee	16,231
Area (Square Meters)	3,134
Lease start date	1-Jan-14
Lease expiration period	31-Dec-14
Facility 2 [Member] | Mr. Han's son [Member]
Related Party Transaction [Line Items]
Annual Rental Fee	$6,492
Area (Square Meters)	200
Lease start date	17-Aug-14
Lease expiration period	16-Aug-15

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2007
Operating Loss Carryforwards [Line Items]
Statutory tax rate	25.00%	25.00%	25.00%
UNITED STATES [Member]
Operating Loss Carryforwards [Line Items]
Deferred income tax liabilities on undistributed earnings	414,416,319	383,294,864
Dubai [Member]
Operating Loss Carryforwards [Line Items]
Deferred income tax liabilities on undistributed earnings	83,272,307
Tax Carryforward Group One [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	2,581
Tax loss carryforwards, expiration date	31-Dec-33
Tax Carryforward Group Two [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	372,140
Tax loss carryforwards, expiration date	31-Dec-34
Tax Carryforward Group Three [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	19,371
Tax loss carryforwards, expiration date	31-Dec-17
Tax Carryforward Group Four [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	67,201
Tax loss carryforwards, expiration date	31-Dec-18
Tax Carryforward Group Five [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	1,160,448
Tax loss carryforwards, expiration date	31-Dec-19
Tax Carryforward Group Six [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	1,247,021
Tax Carryforward Group Seven [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	1,762,003
Research Institute [Member]
Operating Loss Carryforwards [Line Items]
Registered capital					400,000
Net assets distributed to the local government				84,000,000
Heilongjiang Xinda [Member]
Operating Loss Carryforwards [Line Items]
Expenditures not deductible for income tax purposes				84,000,000
Harbin Xinda [Member]
Operating Loss Carryforwards [Line Items]
Registered capital				500,000
Deferred income tax liability in connection with the net assets granted to the Research Center				21,500,000
Favor Sea US And Xinda US [Member]
Operating Loss Carryforwards [Line Items]
Statutory tax rate	34.00%
Sichuan Xinda Group [Member]
Operating Loss Carryforwards [Line Items]
Statutory tax rate	15.00%
Xinda US [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	374,721

Income_Taxes_Components_of_Inc

Income Taxes (Components of Income (Loss) Before Income Taxes) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	$139,042,646	$180,535,965	$115,383,940
U.S. [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	-4,957,190	-4,768,725	625,840
BVI [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	-16,070,146	-7,685	-4,208
Hong Kong [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	-973,523	-815,408	-568,268
Dubai [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	83,267,935
PRC, excluding Hong Kong [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	$77,775,570	$186,127,783	$115,530,576

Income_Taxes_Schedule_of_Incom

Income Taxes (Schedule of Income Tax Expense (Benefit)) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Current income tax expense -PRC	$20,089,436	$47,559,763	$31,091,188
Current income tax expense - US	195,598	1,017,585
Deferred income tax benefit -PRC	-2,018,757	-1,880,228	-1,574,995
Total	$18,266,277	$46,697,120	$29,516,193

Income_Taxes_Schedule_of_Effec

Income Taxes (Schedule of Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
PRC statutory income tax rate	25.00%	25.00%	25.00%
Increase (decrease) in effective income tax rate resulting from:
Tax rate differential on entities not subject to PRC income tax	-12.10%	-0.10%	0.20%
Non-deductible expenses (non-taxable income)	0.60%	0.80%	-0.40%
Preferential tax rate	-3.30%	-0.70%	0.00%
Change in valuation allowance	0.50%	0.00%	-0.40%
Others	2.40%	0.90%	1.20%
Effective income tax rate	13.10%	25.90%	25.60%

Income_Taxes_Schedule_of_Defer

Income Taxes (Schedule of Deferred Income Tax Assets and Liabilities) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred income tax assets:
Tax loss carryforwards	$727,711	$73,182
Less: valuation allowance	-727,711	-73,182	-556,677	-1,005,361
Deferred income tax assets, net
Deferred income tax liabilities:
Net assets of Research Institute granted to Research Center	1,185,638	3,134,131
Forward contract	-604
Property, plant and equipment	15,766,517	16,294,575
Total deferred income tax liabilities	$16,951,551	$19,428,706

Income_Taxes_Schedule_of_Defer1

Income Taxes (Schedule of Deferred Tax Asset Valuation Allowance) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Balance at the beginning of the year	$73,182	$556,677	$1,005,361
Expiration due to liquidation		-437,762
Additions of valuation allowance	662,151	72,305	41,110
Reduction of valuation allowance	-7,622	-118,038	-489,794
Balance at the end of the year	$727,711	$73,182	$556,677

Income_Taxes_Schedule_of_Unrec

Income Taxes (Schedule of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Balance at beginning of year	$8,807,490
Increase related to current year tax positions	5,801,768	8,807,490
Balance at end of year	14,609,258	8,807,490
Unrecognized tax benefits if recognized, would affect the effective tax rate	12,544,088	6,690,841
Unrecognized tax benefits interest and penalty expenses accrued	1,322,135
Income taxes payable	14,025,825	8,224,057
Reduction of the deferred income tax assets for tax loss carry forwards	$583,433

Common_Stock_Details

Common Stock (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Mar. 12, 2009
Common Stock [Abstract]
Total Shares Authorized			550,000,000
Common stock, shares authorized	500,000,000	500,000,000	500,000,000
Common stock, par value	$0.00	$0.00	$0.00
Preferred stock, shares authorized			50,000,000
Preferred stock, par value			$0.00

Preferred_Stock_Details

Preferred Stock (Details)

Mar. 12, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2014

Dec. 31, 2008

Dec. 31, 2014

Sep. 30, 2011

Aug. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2011

Aug. 15, 2011

USD ($)

Stockholders' Agreement [Member]

Stockholders' Agreement [Member]

Stockholders' Agreement [Member]

Stockholders' Agreement [Member]

Series B Preferred Stock [Member]

Series B Preferred Stock [Member]

Redeemable Series D convertible preferred stock [Member]

Redeemable Series D convertible preferred stock [Member]

Redeemable Series D convertible preferred stock [Member]

Redeemable Series D convertible preferred stock [Member]

Redeemable Series D convertible preferred stock [Member]

Redeemable Series D convertible preferred stock [Member]

Redeemable Series D convertible preferred stock [Member]

CNY

CNY

CNY

USD ($)

USD ($)

USD ($)

USD ($)

CNY

CNY

USD ($)

CNY

USD ($)

Class of Stock [Line Items]

Stock issued, shares

1,000,000

16,000,000

16,000,000

Percentage of voting power held by company on a fully diluted basis

40.00%

Preferred stock per share liquidation preference

$1

Proceeds from issuance of preferred stock

$99,100,000

$100,000,000

Equity issuance, price per share

$6.25

Gross proceeds from issuance of redeemable Series D convertible preferred stocks

100,000,000

Preferred stock, par value

$0.00

$0.00

$0.00

Conversion price per share for preferred stock

$6.25

Minimum 'Actual Profit' needed during period to convert preferred stock to common shares

800,000,000

520,000,000

360,000,000

800,000,000

520,000,000

360,000,000

The minimum number of preferred shares, that if outstanding, will give holders veto rights over certain material corporate actions of the Company

1,600,000

The minimum 'Actual Profit' for the financial year threshold that must be maintained in order to prevent triggering event

608,000,000

468,000,000

360,000,000

Number of shares of common stock held as collateral under pledge agreement

16,000,000

The fair value of the options issued by the Principal Stockholders to the holders of the Series D Preferred Stock

$1,501,000

Warrants_Narrative_Details

Warrants (Narrative) (Details) (USD $)	0 Months Ended				12 Months Ended	1 Months Ended
	Apr. 03, 2014	Dec. 01, 2014	Oct. 04, 2010	Dec. 01, 2009	Dec. 31, 2014	Oct. 31, 2010	Dec. 31, 2013
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding					0		1,437,957
Proceeds from exercises of warrants	$596,740
Series A Investors Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding				1,320,696
Exercise Price			4.9	5.5
Warrant expirations		295,878
Series A Investors Warrants [Member] | Minimum [Member]
Class of Warrant or Right [Line Items]
Exercise date			4-Oct-10	1-Dec-09
Series A Investors Warrants [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Exercise date			1-Dec-14	1-Dec-14
Series A Investors Warrants [Member] | Warrant Issuance One [Member]
Class of Warrant or Right [Line Items]
Warrant exercise for common stock shares	130,435
Common stock shares issued on exercise of warrant	130,435
Series A Investors Warrants [Member] | Warrant Issuance Two [Member]
Class of Warrant or Right [Line Items]
Warrant exercise for common stock shares					894,383
Common stock shares issued on exercise of warrant					472,023
Series A Placement Agents Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding				117,261
Exercise Price				5.5
Series C Investor Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding			1,666,667
Exercise Price			6
Series C Investor Warrants [Member] | Minimum [Member]
Class of Warrant or Right [Line Items]
Exercise date						8-Apr-11
Series C Investor Warrants [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Exercise date						14-Oct-11
Series C Placement Agents Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding			166,667
Exercise Price			7.5
Series C Placement Agents Warrants [Member] | Minimum [Member]
Class of Warrant or Right [Line Items]
Exercise date						4-Oct-10
Series C Placement Agents Warrants [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Exercise date						6-Jul-13

Warrants_Summary_of_Outstandin

Warrants (Summary of Outstanding Warrants) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding	1,437,957	0
Series A Investors Warrants [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$4.90
Number of Warrants Outstanding	1,320,696
Remaining Contractual Life	11 months 1 day
Series A Placement Agents Warrants [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$5.50
Number of Warrants Outstanding	117,261
Remaining Contractual Life	11 months 1 day

Warrants_Warrants_Fair_Value_A

Warrants (Warrants Fair Value Assumptions) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Series A Investors Warrants [Member]
Share-based Goods and Nonemployee Services Transaction [Line Items]
Volatility	28.90%
Expected dividend yield	0.00%
Fair value of underlying common stock (per share)	$5.26
Risk-free interest rate (per annum)	0.16%
Series A Placement Agents Warrants [Member]
Share-based Goods and Nonemployee Services Transaction [Line Items]
Volatility	28.90%
Expected dividend yield	0.00%
Fair value of underlying common stock (per share)	$5.26
Risk-free interest rate (per annum)	0.16%

Warrants_Change_in_Fair_Value_

Warrants (Change in Fair Value of Warrants) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Class of Warrant or Right [Line Items]
Fair value of warrants	$1,063,401	$1,008,750
Change in Fair value	1,871,074	-54,651
Exercise of warrants	-2,934,475
Fair value of warrants		1,063,401
Series A Investors Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value of warrants	1,004,910	915,189
Change in Fair value	1,929,565	-89,721
Exercise of warrants	-2,934,475
Fair value of warrants		1,004,910
Series A Placement Agents Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value of warrants	58,491	66,077
Change in Fair value	-58,491	7,586
Exercise of warrants
Fair value of warrants		58,491
Series C Placement Agents Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value of warrants		27,484
Change in Fair value		27,484
Exercise of warrants
Fair value of warrants

Stock_based_compensation_Narra

Stock based compensation (Narrative) (Details) (USD $)

12 Months Ended

1 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

31-May-13

Oct. 31, 2011

Aug. 31, 2010

Aug. 31, 2014

Aug. 31, 2013

Aug. 31, 2012

Dec. 31, 2011

26-May-09

8-May-13

Oct. 24, 2011

Aug. 08, 2010

Aug. 07, 2010

Aug. 07, 2014

Aug. 07, 2013

Aug. 07, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares approved to grant to certain executive officers and employees

7,800,000

Fair value of options vested

$3,090,766

$1,499,941

$159,754

Exercise Price

$8.01

$8.01

Nonvested Shares [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares to vest

647,288

26,361

26,405

80,000

19,856

Vesting date

8-Nov-13

24-Apr-12

7-Feb-11

Unrecognized compensation cost

1,806,377

Unrecognized compensation cost, recognition period

1 year 8 months 19 days

Granted

26,405

99,856

Nonvested Shares [Member] | General and administration expenses [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock based compensation expense

1,003,040

3,630,565

1,098,795

Nonvested Shares [Member] | Executive officers and employees [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares to vest

282,460

192,370

230,000

Vesting date

6-Aug-13

7-Aug-17

7-Aug-16

6-Aug-15

Granted

230,000

Nonvested Shares [Member] | Consultants [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares to vest

674,205

225,000

Vesting date

7-Feb-14

7-Feb-13

Granted

225,000

Nonvested Shares [Member] | Former Employee [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares to vest

10,000

Vesting date

7-Aug-12

Granted

10,000

Nonvested Shares [Member] | Two Independent Directors [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares to vest

9,488

Vesting date

7-Feb-15

Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Contractual term

3 years

Granted

445,500

Exercise Price

8.01

Stock Options [Member] | General and administration expenses [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock based compensation expense

$127,215

$294,460

Stock_based_compensation_Summa

Stock based compensation (Summary of Nonvested Shares Activity) (Details) (Nonvested Shares [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	8-May-13	Oct. 24, 2011	Aug. 08, 2010	Aug. 07, 2010	Aug. 07, 2014	Aug. 07, 2012
Number of Nonvested Shares
Balance	1,090,575	513,000	106,405
Granted	291,948	892,936	465,000
Vested	-674,205	-311,361	-36,405
Forfeited	-61,030	-4,000	-22,000
Outstanding	647,288	1,090,575	513,000
Vested and expected to vest as of December 31, 2014	647,288			26,361	26,405	80,000	19,856
Weighted Average Grant Date Fair Value Per Share
Balance	$4.89	$4.66	$6.03
Granted	$5.13	$4.52	$4.41
Vested	$4.58	$4.74	$4.39
Forfeited	$4.47	$4.37	$6.37
Outstanding	$5	$4.89	$4.66
Vested and expected to vest as of December 31, 2014	$5
Director [Member]
Number of Nonvested Shares
Vested and expected to vest as of December 31, 2014								9,488
Former Employee [Member]
Number of Nonvested Shares
Vested and expected to vest as of December 31, 2014									10,000

Stock_based_compensation_Summa1

Stock based compensation (Summary of Stock Options Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Number of Options Outstanding
Outstanding, beginning	148,500	297,000
Expired	-148,500	-148,500
Outstanding, ending		148,500
Weighted Average Exercise Price
Outstanding, beginning	$8.01	$8.01
Expired	$8.01	$8.01
Outstanding, ending		$8.01

Earnings_per_share_Calculation

Earnings per share (Calculation of Basic and Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share Note [Line Items]
Net income	$35,700,000	$43,200,000	$19,800,000	$22,000,000	$57,400,000	$41,100,000	$20,800,000	$14,500,000	$120,776,369	$133,838,845	$85,867,747
Less: Dividends to redeemable Series C convertible preferred stockholders											-110
Net income available to the Company's stockholders									120,776,369	133,838,845	85,867,637
Net income for basic and diluted earnings per share									90,197,253	99,261,885	63,975,039
Denominator for basic and diluted earnings per share									48,833,434	47,794,028	47,549,275
Earnings per common share:
Basic and diluted earnings per common share					$0.89	$0.64	$0.32	$0.23	$1.85	$2.08	$1.35
Convertible Preferred Stock Series C [Member]
Earnings Per Share Note [Line Items]
Less: earnings allocated to participating											-478
Convertible Preferred Stock Series D [Member]
Earnings Per Share Note [Line Items]
Less: earnings allocated to participating									-29,552,623	-33,229,887	-21,527,155
Nonvested Shares [Member]
Earnings Per Share Note [Line Items]
Less: earnings allocated to participating									($1,026,493)	($1,347,073)	($364,965)

Earnings_per_share_Summary_of_

Earnings per share (Summary of Potentially Dilutive Securities) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Convertible Preferred Stock Series D [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares issuable upon exercise	16,000,000	16,000,000	16,000,000
Series A Investors Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares issuable upon exercise		1,320,696	1,320,696
Series A Placement Agents Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares issuable upon exercise		117,261	117,261
Series C Placement Agents Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares issuable upon exercise			166,667
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares issuable upon exercise			148,500

Statutory_reserves_Details

Statutory reserves (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012
	USD ($)	CNY	USD ($)	CNY	USD ($)	CNY
Statutory reserves [Abstract]
Appropriations to reserve fund	$6,030,731	37,156,541	$4,892,127	30,075,331	$599,858	3,737,172
Accumulated statutory surplus reserve	$14,924,173	91,830,755	$8,893,442	54,674,214	$3,948,393	24,598,883

Commitments_and_contingencies_1

Commitments and contingencies (Narrative) (Details)	1 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2014
	Property, Plant and Equipment [Member]	Property, Plant and Equipment [Member]	Working Capital [Member]	Working Capital [Member]	Equipment [Member]	Equipment [Member]
	USD ($)	CNY	USD ($)	CNY	USD ($)	CNY
Long-term Purchase Commitment [Line Items]
Commitments	$290.10	1,800	$96.70	600	$94.10	584

Commitments_and_contingencies_2

Commitments and contingencies (Schedule of Future Minimum Rental Payments) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and contingencies [Abstract]
2015	$1,475,625
2016	1,100,034
2017	842,564
2018	775,613
2019 and thereafter
Operating lease rental expense, plant, equipment and office spaces	$1,476,640	$1,042,894	$711,310

Revenues_Details

Revenues (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Sales Revenue By Product [Line Items]
Sales revenue									$1,110,685,692	$1,048,801,846	$592,280,071
Service revenue										2,014,518	7,538,897
Revenues	307,100,000	315,700,000	264,200,000	223,600,000	384,500,000	293,100,000	202,200,000	171,000,000	1,110,685,692	1,050,816,364	599,818,968
Modified Polyamide 66 (PA66) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									192,374,156	195,471,978	71,651,635
Modified Polyamide 6 (PA6) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									223,122,191	216,210,438	80,491,488
Plastic Alloy [Member]
Sales Revenue By Product [Line Items]
Sales revenue									400,306,257	296,635,139	123,684,058
Modified Polypropylene (PP) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									232,421,229	286,263,653	290,535,039
Modified Acrylonitrile butadiene styrene (ABS) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									36,804,599	32,440,913	25,348,218
Polyoxymethylenes (POM) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									3,606,000	2,835,335	569,633
Polyphenylene Oxide (PPO) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									14,830,647	13,570,734
Polylactide (PLA) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									13,952
Others [Member]
Sales Revenue By Product [Line Items]
Sales revenue									$7,206,661	$5,373,656

Selected_Quarterly_Financial_I2

Selected Quarterly Financial Information (Summary of Quarterly Financial Information) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selected Quarterly Financial Information [Abstract]
Revenues	$307,100,000	$315,700,000	$264,200,000	$223,600,000	$384,500,000	$293,100,000	$202,200,000	$171,000,000	$1,110,685,692	$1,050,816,364	$599,818,968
Gross profit	58,100,000	65,400,000	52,300,000	46,600,000	91,300,000	65,700,000	37,200,000	29,200,000	222,457,824	223,396,503	143,807,253
Net income	$35,700,000	$43,200,000	$19,800,000	$22,000,000	$57,400,000	$41,100,000	$20,800,000	$14,500,000	$120,776,369	$133,838,845	$85,867,747
Earnings per share
Basic	$0.54	$0.66	$0.30	$0.34
Diluted	$0.54	$0.62	$0.30	$0.34
Basic and diluted					$0.89	$0.64	$0.32	$0.23	$1.85	$2.08	$1.35

Geographic_Revenue_Information2

Geographic Revenue Information (Summary of Revenues from Geographic Areas) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$307,100,000	$315,700,000	$264,200,000	$223,600,000	$384,500,000	$293,100,000	$202,200,000	$171,000,000	$1,110,685,692	$1,050,816,364	$599,818,968
Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									1,110,600,000	1,050,800,000	599,800,000
PRC Excluding HK SAR Macau Sar Taiwan [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									970,500,000	1,050,800,000	599,800,000
ROK [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$140,100,000

Subsequent_events_Details

Subsequent events (Details) (Subsequent Event [Member], USD $)	12 Months Ended
	Dec. 31, 2014
Interest-Free Loan [Member]
Subsequent Event [Line Items]
Debt instrument, issuer	local authorities in Sichuan Province
Debt instrument, face amount	$110,000,000
Debt instrument, issuance date	23-Jan-15
Bank Loan One [Member]
Subsequent Event [Line Items]
Debt instrument, issuer	Bank of Communications
Debt instrument, face amount	140,000,000
Debt instrument, interest rate	5.32%
Debt instrument, payment description	The foregoing loans were extended by the corresponding bank in 2015, and are due and payable in five instalments. The last instalment will become due and payable on November 30, 2015.
Debt instrument, guarantor	Nanchong City Government of Sichuan Province
Debt instrument, guarantee provided date	11-Feb-15
Bank Loan Two [Member]
Subsequent Event [Line Items]
Debt instrument, issuer	Bank of Construction
Debt instrument, face amount	$100,000,000
Debt instrument, interest rate	5.32%
Debt instrument, payment description	The foregoing loans were extended by the corresponding bank in 2015, and are due and payable in five instalments. The last instalment will become due and payable on November 30, 2015.
Debt instrument, guarantor	Nanchong City Government of Sichuan Province
Debt instrument, guarantee provided date	11-Feb-15