China XD Plastics (CXDC) 10-K 15 Mar 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Mar. 10, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Entity Registrant Name	China XD Plastics Co Ltd
Entity Central Index Key	1,353,970
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2,015
Entity Filer Category	Accelerated Filer
Entity Units Outstanding		49,406,191
Entity Public Float			$ 102,796,027
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 119,928,485	$ 45,456,612
Restricted cash	50,852,327	12,545,772
Time deposits	237,626,806	238,532,702
Accounts receivable, net of allowance for doubtful accounts	234,542,739	203,998,138
Amounts due from a related party	244,836	220,262
Inventories	294,665,195	249,797,244
Prepaid expenses and other current assets	15,675,848	11,253,828
Total current assets	953,536,236	761,804,558
Property, plant and equipment, net	571,746,507	318,324,600
Land use rights, net	24,506,837	11,896,542
Prepayments to equipment and construction suppliers	183,226,006	182,259,578
Other non-current assets	18,966,622	21,256,332
Total assets	1,751,982,208	1,295,541,610
Current liabilities:
Short-term bank loans, including current portion of long-term bank loans	284,339,089	99,735,422
Bills payable	33,522,287	43,389,928
Accounts payable	257,417,000	$ 152,073,014
Amounts due to a related party	8,439
Income taxes payable	6,881,946	$ 3,269,115
Accrued expenses and other current liabilities	140,988,712	24,484,583
Total current liabilities	723,157,473	322,952,062
Long-term bank loans, excluding current portion	107,481,709	174,274,446
Notes payable	145,634,996	$ 144,373,645
Deferred income	62,039,050
Other non-current liabilities	38,046,917	$ 30,977,376
Total liabilities	1,076,360,145	672,577,529
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, 49,344,284 shares and 49,172,796 shares issued, 49,323,284 shares and 49,151,796 shares outstanding as of December 31, 2015 and 2014, respectively	4,933	4,916
Treasury stock, 21,000 shares at cost	(92,694)	(92,694)
Additional paid-in capital	81,919,932	80,875,787
Retained earnings	515,555,985	431,823,706
Accumulated other comprehensive income (loss)	(19,342,658)	12,775,801
Total stockholders' equity	$ 578,045,598	$ 525,387,616
Commitments and contingencies
Total liabilities, redeemable convertible preferred stocks and stockholders' equity	$ 1,751,982,208	$ 1,295,541,610

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED BALANCE SHEETS [Abstract]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	49,344,284	49,172,796
Common stock, shares outstanding	49,323,284	49,151,796
Treasury shares, shares	21,000	21,000

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Revenues	$ 999,192,894	$ 1,110,685,692	$ 1,050,816,364
Cost of revenues	(817,811,445)	(888,227,868)	(827,419,861)
Gross profit	181,381,449	222,457,824	223,396,503
Selling expenses	(1,458,658)	(728,232)	(243,975)
General and administrative expenses	(23,816,148)	(20,564,820)	(16,284,528)
Research and development expenses	(21,061,345)	(29,434,680)	(21,258,549)
Total operating expenses	(46,336,151)	(50,727,732)	(37,787,052)
Operating income	135,045,298	171,730,092	185,609,451
Interest income	8,221,532	10,984,980	6,788,243
Interest expense	(42,704,097)	(41,518,878)	(15,250,780)
Foreign currency exchange gains (losses)	(2,237,541)	(1,938,807)	$ 2,519,486
Gains (losses) on foreign currency forward contracts	$ 653,569	(1,067,162)
Loss on change in fair value of warrants liability		(1,871,074)	$ (54,651)
Government grant	$ 2,991,493	2,723,495	924,216
Total non-operating expenses, net	(33,075,044)	(32,687,446)	(5,073,486)
Income before income taxes	101,970,254	139,042,646	180,535,965
Income tax expense	(18,237,975)	(18,266,277)	(46,697,120)
Net income	$ 83,732,279	$ 120,776,369	$ 133,838,845
Earnings per common stock:
Basic and diluted	$ 1.27	$ 1.85	$ 2.08
Net Income	$ 83,732,279	$ 120,776,369	$ 133,838,845
Other comprehensive income (loss)
Foreign currency translation adjustment, net of nil income taxes	(32,118,459)	(12,268,113)	10,385,656
Comprehensive income	$ 51,613,820	$ 108,508,256	$ 144,224,501

CONSOLIDATED STATEMENTS OF CHAN

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 (Loss) [Member]
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 (loss) - 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 (loss) - 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
Net income	83,732,279					$ 83,732,279
Other comprehensive income (loss) - Foreign currency translation adjustment, net of nil income taxes	(32,118,459)						$ (32,118,459)
Stock based compensation	$ 1,044,162				$ 1,044,162
Vesting of unvested shares			$ 17		(17)
Vesting of unvested shares, shares			171,488
Balance at Dec. 31, 2015	$ 578,045,598	$ 100	$ 4,933	$ (92,694)	$ 81,919,932	$ 515,555,985	$ (19,342,658)
Balance, shares at Dec. 31, 2015		1,000,000	49,323,284

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 83,732,279	$ 120,776,369	$ 133,838,845
Adjustments to reconcile net income to net cash provided by operating activities:
Net reversal for doubtful accounts	(69,281)	(35,849)	(2,293)
Depreciation and amortization	27,540,212	22,916,893	21,420,723
Stock-based compensation	$ 1,044,162	1,003,040	3,757,780
Loss on change in fair value of warrants liability		1,871,074	$ 54,651
Amortization of discount and issuance cost of the Notes	$ 1,086,010	898,634
Loss on change in fair value of forward contract		2,435
Foreign currency exchange losses (gains)	$ 2,720,131	2,051,596	$ (2,519,486)
Losses on disposals of property, plant and equipment	9,036	10,292	4,817
Deferred income tax benefit	(2,380,236)	(2,018,757)	(1,880,228)
Change in operating assets and liabilities:
Restricted cash	4,011,349	(6,427,562)	6,082,662
Accounts receivable	(40,614,289)	$ 72,318,976	(132,230,006)
Amounts due from a related party	(35,937)		6,534
Inventories	(58,103,919)	$ (109,198,972)	(63,358,285)
Prepaid expenses and other current assets	(4,542,796)	$ (3,719,794)	(2,134,119)
Other non-current assets	(371,872)		1,435
Bills payable	(8,119,365)	$ 18,538,133	15,676,880
Accounts payable	116,133,982	32,823,457	113,429,086
Amounts due to a related party	8,167
Income taxes payable	3,889,710	(8,996,712)	17,835,057
Accrued expenses and other current liabilities	86,963,823	$ 5,935,116	$ 5,662,472
Deferred income	3,371,249
Other non- current liabilities	11,098,323
Net cash provided by operating activities	227,370,738	$ 148,748,369	$ 115,646,525
Cash flows from investing activities:
Purchase of time deposits	(474,254,312)	(626,994,741)	(460,292,902)
Proceeds from maturity of time deposits	463,771,799	663,216,581	231,849,776
Purchases of and deposits for property, plant and equipment	(267,427,681)	(334,092,742)	$ (21,461,391)
Purchase of land use rights	(13,931,804)	$ (1,460,754)
Government grant related to the construction of Sichuan plant	11,499,000
Net cash used in investing activities	(280,342,998)	$ (299,331,656)	$ (249,904,517)
Cash flows from financing activities:
Proceeds from bank borrowings	504,218,741	797,615,642	503,843,151
Repayment of bank borrowings	$ (339,528,477)	(831,932,534)	$ (358,190,868)
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
Proceeds from early exercise of options	$ 121,725
Release of restricted cash as collateral for bank borrowings		$ 10,022,398	$ 5,733,852
Placement of restricted cash as collateral for bank borrowings	$ (33,077,094)	(20,612,868)	(8,173,789)
Net cash provided by financing activities	131,734,895	99,367,101	143,212,346
Effect of foreign currency exchange rate changes on cash and cash equivalents	(4,290,762)	1,126,894	2,768,948
Net increase (decrease) in cash and cash equivalents	74,471,873	(50,089,292)	11,723,302
Cash and cash equivalents at beginning of year	45,456,612	95,545,904	83,822,602
Cash and cash equivalents at end of year	119,928,485	45,456,612	95,545,904
Supplemental disclosure of cash flow information:
Interest paid, net of RMB 231,356, RMB 113,317 and nil capitalized for the years ended December 31, 2015, 2014 and 2013, respectively	40,136,978	33,537,952	15,413,648
Income taxes paid	8,982,167	$ 29,288,894	$ 30,742,291
Non-cash investing and financing activities:
Government grant related to construction in the form of repayment of bank loans on behalf of the Company by the government (note 13)	38,118,231
Government grant related to the construction of Sichuan plant in the form of restricted cash (note 13)	11,117,817
Accrual for purchase of equipment	$ 41,251,663		$ 21,398,595
Accrual for issuance cost of the Notes		$ 202,712

CONSOLIDATED STATEMENTS OF CAS7

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - CNY (¥)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract]
Interest paid, capitalized amount	¥ 231,356	¥ 113,317

Description of business and sig

Description of business and significant concentrations and risks	12 Months Ended
	Dec. 31, 2015
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 Nevada of the United States of America. 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: Polypropylene ("PP"), Acrylonitrile Butadiene Styrene ("ABS"), Polyamid6 ("PA6"), Polyamid66 ("PA66"), Polyformaldehyde ("POM"), Polyphenylene Oxide ("PPO"), Plastic Alloy, Polyphenylene Sulfide ("PPS"), Poly Imide ("PI"), Polylactide Acid ("PLA") and Poly Ether Ether Ketone ("PEEK"). 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 in the Republic of Korea (the “ROK”). The Company's sales are highly concentrated. Sales to distributors and the end customer in the ROK, which individually exceeded 10% of the Company's revenues, for the years ended December 31, 2015, 2014 and 2013, are as follows: (in millions, except percentage) Years Ended December 31, 2015 2014 2013 US$ % US$ % US$ % Distributor A, located in PRC 192.0 19.2 % 176.6 15.9 % 209.4 19.9 % Distributor B, located in PRC 155.3 15.5 % 136.4 12.3 % 250.7 23.9 % Distributor C, located in PRC 127.3 12.7 % 138.5 12.5 % 63.8 6.1 % Distributor D, located in PRC 112.1 11.2 % 134.0 12.1 % 136.0 12.9 % Distributor E, located in PRC 106.5 10.7 % 98.0 8.8 % 38.8 3.7 % Distributor F, located in PRC 81.8 8.2 % 139.8 12.6 % 138.1 13.1 % Direct Customer G, located in the ROK 71.6 7.2 % 140.1 12.6 % - - Total 846.6 84.7 % 963.4 86.7 % 836.8 79.6 % 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, electronic application industry in the 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 a limited number of distributors. Raw material purchases from these distributors, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 80.0 88.3 65.5 The Company purchased equipment from two equipment distributors, which accounted for 99.8 99.6 34.6 84.8 1.9 34.6 nil 0.4 13.2 Cash concentration Cash and cash equivalents, restricted cash, time deposits and other non-current assets mentioned below maintained at banks consist of the following: December 31, 2015 December 31, 2014 US$ US$ RMB denominated bank deposits with: Financial Institutions in the PRC 417,430,412 311,377,750 Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR") 13,778 2,617 Financial Institution in Dubai, United Arab Emirates ("UAE") 3,023 170 U.S. dollar denominated bank deposits with: Financial Institution in the U.S. 226,010 770,704 Financial Institutions in the PRC 17,109 17,139 Financial Institution in Hong Kong SAR 63,854 1,366,224 Financial Institution in Macau Special Administrative Region ("Macau SAR") 37,120 47,868 Financial Institution in Dubai, UAE 7,474,960 481,179 Euro denominated bank deposits with: Financial institution in Hong Kong SAR - 83,017 Financial institution in Dubai, UAE 3,011 3,355 HK dollar denominated bank deposits with: Financial institution in Hong Kong SAR 336 581 Dirham denominated bank deposits with: Financial institution in Dubai, UAE 37,278 112,815 The bank deposits with financial institutions in the PRC are insured by the government authority up to RMB 500,000 500,000 500,000

Summary of significant accounti

Summary of significant accounting policies	12 Months Ended
	Dec. 31, 2015
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, 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 (loss) 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 consists 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 twelve 2.6 3.0 Cash deposits in bank that are restricted as to withdrawal or usage for up to 12 months are reported as restricted cash in the consolidated balance sheets and excluded from cash and cash equivalents in the consolidated statements of cash flows. Cash deposits of US$ 16,907,470 17,728,782 that are restricted for period beyond 12 months from the balance sheet date are included in other non-current assets in the consolidated balance sheets and also excluded from 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$ 8,069,475 11,868,855 nil 676,917 Short-term bank deposits that are pledged as collateral for short-term and long-term bank borrowings are reported as restricted cash and amounted to US$ 32,010,452 nil 16,907,470 17,728,782 Short-term bank deposits that are related to government grant are reported as restricted cash and amounted to US$ 10,772,400 nil (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 net realizable value. 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 Machinery, equipment and furniture 5 10 Motor vehicles 5 An appropriate allocation of depreciation expense of property, plant and equipment attributable to manufacturing activities based 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. 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 a land use right is usually paid in one lump sum at the date the right is granted. The prepayment usually covers the entire 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 Amortization expense of land use rights was US$ 411,178 259,310 224,587 (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 ROK, 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, 2015, 2014 and 2013, sales returns were minimal. 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 consolidated balance sheets 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 related to the acquisition of assets are recorded as deferred income on the consolidated balance sheets when the grants become receivable, and recognized as other income in the consolidated statements of comprehensive income on a straight-line basis over the estimated useful lives of those assets. (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 (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 1,788,552 1,555,471 1,024,728 For the years ended December 31, 2015 2014 and 2013, 77 78 80 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 and redeemable 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: - Level 2 Inputs - Level 3 Inputs 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, 2015 and 2014 are categorized as Level 2 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, which was measured at fair value on a recurring basis as of December 31, 2014, 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, 2015 and 2014. 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, 2015, the carrying amount and estimated fair value of the notes payable were US$ 145,634,996 127,219,500 - 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 In 2015, the Company elected to early adopt the Accounting Standards Update ("ASU") No. 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires the debt issuance costs be presented on the balance sheet as a direct deduction from the carrying amount of the related debt liability, instead of reported on the balance sheet as an asset. The costs will continue to be amortized to interest expense using the effective interest method. Upon adoption of the guidance, the debt issuance costs in the amount of US$ 4,243,412 In 2015, the Company elected to early adopt the ASU No. 2015-11, Simplifying the Measurement of Inventory, which changes the measurement principle of inventory from the lower of cost or market to lower of cost and net realizable value, and requires prospective adoption. Net realizable value is defined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The ASU eliminates the guidance that entities consider replacement cost or net realizable value less an approximately normal profit margin when measuring inventory when cost is determined on a first-in-first-out or average cost basis. The Company applied this new measurement principle of inventory as of December 31, 2015. The adaption of ASU No. 2015-11 does not have any impact on the Company's consolidated financial statements. In 2015, the Company elected to early adopt the ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes , which requires entities with a classified balance sheet to present all deferred tax assets and liabilities as noncurrent. The Company adopted this new guidance retrospectively. The adoption of ASU No. 2015-17 does not have any impact on the Company's consolidated financial statements. The Financial Accounting Standards Board issued Accounting Standards Codification (“ASC”) Topic 842, Leases, in February 2016. ASC Topic 842 requires a lessee to recognize all leases, including operating leases, on balance sheet via a right-of-use asset and lease liability, unless the lease is a short-term lease (one with an accounting lease term of 12 months or less). All (or a portion of) fixed payments by the lessee to cover lessor costs related to ownership of the underlying assets, or executory costs, that do not represent payments for a good or service will be considered lease payments and reflected in the measurement of lease assets and lease liabilities by lessees. The new standard does not substantially change lessor accounting from current U.S. GAAP. The new standard also requires lessees and lessors to disclose more qualitative and quantitative information about their leases than current U.S. GAAP does. The standard is applied retrospectively, with elective reliefs. The new standard is effective for annual and interim reporting periods beginning after December 15, 2018 for a public business entity. Early adoption is permitted. The Company has not yet determined the impact of the new standard on its current policies for leases.

Accounts receivable

Accounts receivable	12 Months Ended
	Dec. 31, 2015
Accounts receivable [Abstract]
Accounts receivable	Note 3 – Accounts receivable Accounts receivable consists of the following: December 31, 2015 2014 US$ US$ Accounts receivable 234,583,370 204,108,050 Allowance for doubtful accounts (40,631 ) (109,912 ) Accounts receivable, net 234,542,739 203,998,138 As of December 31, 2015 and 2014, the accounts receivable balances also include notes receivable in the amount of US$ 2,048,186 921,907 54,664,219 50,473,063 December 31, 2015 December 31, 2014 US$ US$ Aging: – current 234,396,244 203,760,775 – 1-3 months past due 146,495 208,482 – 4-6 months past due - - – 7-12 months past due - 5,560 – greater than one year past due 40,631 133,233 Total accounts receivable 234,583,370 204,108,050 The movements of the allowance for doubtful accounts are as follows: Year ended December 31, 2015 2014 US$ US$ Balance at the beginning of the year (109,912 ) (145,761 ) Reversal of bad debt allowance 69,281 35,849 Balance at the end of the year (40,631 ) (109,912 )

Inventories

Inventories	12 Months Ended
	Dec. 31, 2015
Inventories [Abstract]
Inventories	Note 4 – Inventories Inventories consist of the following: December 31, 2015 2014 US$ US$ Raw materials 287,995,933 241,853,814 Work in progress 164,034 207,181 Finished goods 6,505,228 7,736,249 Total inventories 294,665,195 249,797,244 There were no write down of inventories during the years ended December 31, 2015, 2014 and 2013.

Prepaid expenses and other curr

Prepaid expenses and other current assets	12 Months Ended
	Dec. 31, 2015
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, 2015 2014 US$ US$ Receivables due from a customer in the ROK (i) 9,471,222 - Interest receivable (ii) 3,306,974 3,351,672 Value added taxes receivables 698,286 6,407,547 Advances to suppliers 68,354 168,614 Others (iii) 2,131,012 1,325,995 Total prepaid expenses and other current assets 15,675,848 11,253,828 (i) As of December 31, 2015, receivables due from a customer in the ROK represents the amount the Company paid to purchase raw materials on behalf of the customer in the ROK. (ii) Interest receivable mainly represents interest income accrued from time deposits and restricted cash. (iii) Others mainly include prepaid miscellaneous service fee, staff advance and prepaid rental fee.

Property, plant and equipment,

Property, plant and equipment, net	12 Months Ended
	Dec. 31, 2015
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, 2015 2014 US$ US$ Machinery, equipment and furniture 258,173,175 209,509,700 Motor vehicles 2,009,440 1,854,985 Workshops and buildings 76,924,199 79,009,346 Construction in progress 323,955,531 93,970,716 Total property, plant and equipment 661,062,345 384,344,747 Less: accumulated depreciation (89,315,838 ) (66,020,147 ) Property, plant and equipment, net 571,746,507 318,324,600 All of the property, plant and equipment, net as of December 31, 2015 and 2014 were located in the PRC, except for US$ 83.8 82.0 231,356 113,317 nil Years Ended December 31, 2015 2014 2013 US$ US$ US$ Cost of revenues 21,980,993 19,407,668 18,578,088 General and administrative expenses 1,531,389 1,155,419 958,976 Research and development expenses 3,615,758 2,094,496 1,659,072 Selling expenses 894 - - Total depreciation expense 27,129,034 22,657,583 21,196,136

Prepayments to equipment and co

Prepayments to equipment and construction suppliers	12 Months Ended
	Dec. 31, 2015
Prepayments to equipment and construction suppliers [Abstract]
Prepayments to equipment and construction suppliers	Note 7 - Prepayments to equipment and construction suppliers December 31, 2015 2014 US$ US$ Jiamu (i) 11,712,843 182,259,578 Peaceful (ii) 170,009,200 - Others 1,503,963 - Total Prepayments to equipment and construction suppliers 183,226,006 182,259,578 (i) In December 2013, the Company entered into an equipment purchase contract with Harbin Jiamu Import & Export Trading Co., Ltd ("Jiamu Trading") for a total consideration of RMB 1,629.3 70 89.7 16.3 2.5 1,608.2 247.2 1,130.9 182.3 70 (ii) On January 5, 2015, AL Composites Materials FZE ("AL Composites") entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of US$ 271.2 170.0

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2015
Borrowings [Abstract]
Borrowings	Note 8 – Borrowings The Company has credit facilities with several banks under which they draw short-term and long-term bank loans as described below. (a) Current December 31, 2015 2014 US$ US$ Unsecured loans 64,555,795 47,223,028 Loans secured by accounts receivable 43,037,196 40,292,686 Loans secured by restricted cash 27,100,000 - Current portion of long-term bank loans (note b) 149,646,098 12,219,708 Total short-term loans, including current portion of long-term bank loans 284,339,089 99,735,422 As of December 31, 2015 and 2014, the Company's 4.2 5.7 one 12.0 HSBC Middle East three-month LIBOR 0.6127 1.8 16.5 2.5 In February 2015, the Company obtained a one 16.6 HSBC Middle East three-month LIBOR 1.8 22.8 3.5 In June 2015, the Company obtained a one 7.0 Bank of China Luxemburg Branch one-year LIBOR 1.1780 0.8 45.9 7.1 In July 2015, the Company obtained a one 3.5 Bank of China Luxemburg Branch one-year LIBOR 0.75 23.0 3.5 On September 28, 2015, the company obtained four six 110 16.9 170 27.2 4.60 Harbin Longjiang Bank On October 16, 2015, the Company obtained five six 140 21.5 139.3 21.4 4.60 Harbin Longjiang Bank On December 7, 2015, the Company obtained a six 30 4.6 39.4 6.1 4.79 ICBC in Harbin (b) Non-current December 31, 2015 2014 US$ US$ Secured loans 81,164,800 70,000,000 Unsecured loans 175,963,007 116,494,154 Less: current portion 149,646,098 12,219,708 Total long-term bank loans, excluding current portion 107,481,709 174,274,446 During March and April 2014, the Company obtained two 15 50 6.15 Bank of Heilongjiang On December 11, 2014, the Company obtained a two 199 Bank of Communication 6.60 76.4 Bank of China Macau Branch three-month LIBOR 0.6127 1.7 On June 12, 2014, the Company obtained a three 70 Bank of China Paris Branch at interest rate of 3-month LIBOR 110 2 On January 23, 2015 two 100 15.4 6.0 Agriculture Bank of China 15.2 Bank of China Macau Branch , at an interest rate of three-month LIBOR 0. 6127 1.5 100 15.4 On April 22, 2015, the Company obtained a two 40 6.1 5.75 Agriculture Bank of China On July 30, 2015, the Company obtained a thirteen 50 7.7 5.25 Harbin Longjiang Bank In October and November, 2015, the Company obtained three five 260 40.0 4.75 Bank of China 4,770.0 733.2 1,822.7 280.1 398.1 61.2 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, 2015, the Company has met these financial covenants.

Notes Payable

Notes Payable	12 Months Ended
	Dec. 31, 2015
Notes Payable [Abstract]
Notes Payable	Note 9 – Notes Payable On February 4, 2014, Favor Sea Limited, a wholly owned subsidiary of the Company, issued US$ 150,000,000 11.75 99.080 August 4, 2014 February 4, 2019 143.5 are presented on the consolidated balance sheets as a direct deduction from the carrying amount of notes payable and amortized to interest expense using the effective interest method. 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 100 February 4, 2017 35 111.75 65 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 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, 2015 and 2014, the Company recognized interest expenses of the Notes in the amount of US$ 18,710,825 16,870,122 Unamortized discount and debt issuance costs as of December 31, 2015 and 2014 were US$ 4,365,004 5,626,355

Accrued expenses and other curr

Accrued expenses and other current liabilities	12 Months Ended
	Dec. 31, 2015
Accrued expenses and other current liabilities [Abstract]
Accrued expenses and other current liabilities	Note 10 – Accrued expenses and other current liabilities Accrued expenses and other current liabilities consist of the following: December 31, 2015 2014 US$ US$ Payables for purchase of property, plant and equipment 42,524,903 7,234,607 Accrued freight expenses 1,579,936 1,688,431 Accrued interest expenses 7,800,481 9,031,741 Advance from customers (i) 82,009,002 63,414 Non income tax payables 4,353,730 2,322,006 Others (ii) 2,720,660 4,144,384 Total accrued expenses and other current liabilities 140,988,712 24,484,583 (i) Advance from customers mainly represent the advance received from two customers in the PRC for the raw material purchases during the 4th quarter of 2015. (ii) Others mainly represent accrued payroll and employee benefits and other accrued miscellaneous operating expenses.

Related party transactions

Related party transactions	12 Months Ended
	Dec. 31, 2015
Related party transactions [Abstract]
Related party transactions	Note 11 – Related party transactions The Company entered into related party transactions with Harbin Xinda High-Tech Co., Ltd. ("Xinda High-Tech") Mr. Han's The significant related party transactions are summarized as follows: Years Ended December 31, 2015 2014 2013 US$ US$ US$ Costs and expenses resulting from transactions with related parties: Rental expenses for plant and office space 777,248 791,460 801,715 The related party balances are summarized as follows: December 31, 2015 2014 US$ US$ Amounts due from a related party: Prepaid rental expenses to Xinda High-Tech 244,836 220,262 December 31, 2015 2014 US$ US$ Amounts due to a related party Rental payable to Mr Han's son 8,439 - The Company rents the following plant and office buildings in Harbin, Heilongjiang province from Xinda High-Tech: Premise Leased Area (M 2 Annual Rental Fee (US$) Period of Lease Office building 23,894 758,983 Between January 1, 2014 and December 31, 2018 The Company rents the following facilities in Harbin, Heilongjiang province from Mr. Han's son: Premise Leased Area (M 2 Annual Rental Fee (US$) Period of Lease Facility 3,134 11,912 Between January 1, 2015 and September 30, 2015 Facility 200 6,353 Between August 17, 2014 and August 16, 2016

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Taxes [Abstract]
Income Taxes	Note 12 – 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 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", liquidated in February 2015), and Xinda (HK) Trade Company Limited. ("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 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 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 488,303,847 434,416,319 117,827,046 83,272,307 The components of income before income taxes are as follows: Years Ended December 31, 2015 2014 2013 US$ US$ US$ US (3,512,598 ) (4,957,190 ) (4,768,725 ) BVI (18,685,588 ) (16,070,146 ) (7,685 ) Hong Kong (306,945 ) (973,523 ) (815,408 ) Dubai 34,554,739 83,267,935 - PRC, excluding Hong Kong 89,920,646 77,775,570 186,127,783 Total income before income taxes 101,970,254 139,042,646 180,535,965 The Company's income tax expense (benefit) recognized in the consolidated statements of comprehensive income consists of the following: Years Ended December 31, 2015 2014 2013 US$ US$ US$ Current income tax expense-PRC 20,618,211 20,089,436 47,559,763 Current income tax expense-US - 195,598 1,017,585 Deferred income tax benefit-PRC (2,380,236 ) (2,018,757 ) (1,880,228 ) Total income tax expense 18,237,975 18,266,277 46,697,120 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 Years Ended December 31, 2015 2014 2013 US$ US$ US$ PRC statutory income tax rate 25 % 25 % 25 % Increase (decrease) in effective income tax rate resulting from: Tax rate differential on US entities not subject to PRC income tax - - (0.2 )% Tax rate differential on HK entities not subject to PRC income tax - - 0.1 % Tax rate differential on BVI entities not subject to PRC income tax 4.6 % 2.9 % - Tax rate differential on UAE entities not subject to PRC income tax (8.5 )% (15.0 )% - Non-deductible expenses 0.4 % 0.6 % 0.8 % Preferential tax rate (4.5 )% (3.3 )% (0.7 )% Change in valuation allowance 1.2 % 0.5 % (0.0 )% R&D additional deduction (2.6 )% 0.0 % 0.0 % Others 2.3 % 2.4 % 0.9 % Effective income tax rate 17.9 % 13.1 % 25.9 % The principal components of the Company's deferred income tax assets and deferred income tax liabilities are as follows: December 31, 2015 2014 US$ US$ Deferred income tax assets: Tax loss carry forwards 1,941,124 727,711 Less: valuation allowance (1,941,124 ) (727,711 ) Deferred income tax assets, net - - Deferred income tax liabilities: Net assets of Research Institute granted to Research Center - 1,185,638 Forward contract - (604 ) Property, plant and equipment 13,874,224 15,766,517 Total deferred income tax liabilities (included in other non-current liabilities 13,874,224 16,951,551 The Research Institute was established with a registered capital of approximately US$ 0.4 Heilongjiang Xinda Enterprise Group Macromolecule Materials R&D Center Company Limited ("Xinda Group Material Research") 84.0 84.0 0.5 21.5 The movements of the valuation allowance are as follows: Years Ended December 31, 2015 2014 2013 US$ US$ US$ Balance at the beginning of the year 727,711 73,182 556,677 Expiration due to liquidation (68,070 ) - (437,762 ) Additions of valuation allowance 1,333,527 662,151 72,305 Reduction of valuation allowance (52,044 ) (7,622 ) (118,038 ) Balance at the end of the year 1,941,124 727,711 73,182 The valuation allowance as of December 31, 2015, 2014 and 2013 was primarily provided for the deferred income tax assets of certain entities, which were at cumulative loss positions. As of December 31, 2015, for U.S. federal income tax purposes, the Company had tax loss carryforwards of (i) US$ 590,057 212,659 159,481 217,917 5,827,090 67,201 1,160,448 4,599,441 2,018,829 A reconciliation of the beginning and ending amount of total unrecognized tax benefits for the year ended December 31, 2015 is as follows: Year ended December 31, 2015 2014 2013 US$ US$ US$ Balance at beginning of year 14,609,258 8,807,490 - Increase related to current year tax positions 7,051,049 5,801,768 8,807,490 Balance at end of year 21,660,307 14,609,258 8,807,490 At December 31, 2015, 2014 and 2013, there are US$ 18,370,729 12,544,088 6,690,841 The Company recognizes interest accrued related to unrecognized tax benefits in interest expense and does not recognize penalties. During the years ended December 31, 2015, 2014 and 2013, the Company recognized approximately US$ 1,905,191 1,322,135 nil 3,095,819 1,322,135 respectively which were included in other non-current liabilities. 21,076,874 14,025,825 583,433 The tax returns of the U.S. Entities are subject to U.S. federal income tax examination by tax authorities for the years from 2013 to 2015. 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 2013 to 2015 are open to examination by the PRC tax authorities.

Deferred Income

Deferred Income	12 Months Ended
	Dec. 31, 2015
Deferred Income [Abstract]
Deferred Income	Note 13 - Deferred Income On January 26, 2015, the Company entered into a memorandum and a fund support agreement (the "Agreement") with the People's Government of Shunqing District, Nanchong City, Sichuan Province ("Shunqing Government") pursuant to which Shunqing Government, through its investment vehicle, will extend to the Company RMB 350 53.8 280 43.0 70 10.8 , which has been recorded as restricted cash as of December 31, 2015. The Company also received RMB 32.4 5.0 from Shunqing Government to support the construction of the Sichuan plant and RMB 6.4 1.0 Since the funding is related to construction of long-term assets, the amounts were recognized as government grant, which is included in deferred income on the consolidated balance sheets, and to be recognized as other income in the consolidated statements of comprehensive income over the periods and in the proportions in which depreciation expense on the long-term assets is recognized. In addition, the Company received RMB 22 3.4 7.2 1.1

Other non-current liabilities

Other non-current liabilities	12 Months Ended
	Dec. 31, 2015
Other non-current liabilities [Abstract]
Other non-current liabilities	Note 14 – Other non-current liabilities 2015 2014 US$ US$ Income tax payable-noncurrent (i) 24,172,693 14,025,825 Deferred income tax liabilities (note 12) 13,874,224 16,951,551 Total other non-current liabilities 38,046,917 30,977,376 (i) Income tax payable-noncurrent represents the accumulative balance of unrecognized tax benefits and related accrued interest.

Common Stock

Common Stock	12 Months Ended
	Dec. 31, 2015
Common Stock [Abstract]
Common Stock	Note 15 – Common Stock Pursuant to the amended Article of Incorporation dated March 12, 2009, the Company's authorized share capital is 550,000,000 500,000,000 0.0001 50,000,000 0.0001

Preferred Stock

Preferred Stock	12 Months Ended
	Dec. 31, 2015
Preferred Stock [Abstract]
Preferred Stock	Note 16 – Preferred Stock Series B preferred stock The Company issued 1,000,000 40 1.00 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 0.0001 100 6.25 16,000,000 100 99.1 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$ 6.25 360 520 800 (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 (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 RMB 360 468 608 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. The Mandatory Redemption Price per share was US$ 11.53 10.03 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, 2015. Therefore no changes in the redemption value were recognized for any of the periods presented. 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 0.0001 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 RMB 360 520 800 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

Warrants

Warrants	12 Months Ended
	Dec. 31, 2015
Warrants [Abstract]
Warrants	Note 17 – Warrants In connection with the issuance of Series C preferred stock on December 1, 2009 1,320,696 5.50 five On April 3, 2014, 130,435 130,435 596,740 894,383 472,023 295,878 December 1, 2014 The Company also issued Series A placement agent warrants to purchase a total of 117,261 5.50 The exercise price of the Series A investor warrants was adjusted to US$ 4.90 October 4, 2010 The warrants expired on December 1, 2014 . In connection with the common stock direct offering on October 4, 2010 1,666,667 6.00 April 8, 2011 October 14, 2011 166,667 7.50 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 The changes in the fair value of warrants during the years presented is as follow: Series A investor warrants Series A placement agent Series C p lacement agent warrants Total 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, 2015
Stock based compensation [Abstract]
Stock based compensation	Note 18 – 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 Nonvested shares On August 7, 2010, the Company's Board of Directors approved the grant of 99,856 19,856 February 7, 2011 80,000 August 6, 2013 On October 24, 2011, the Company's Board of Directors approved the grant of 26,405 April 24, 2012 On August 7, 2012 230,000 August 6, 2015 225,000 February 7, 2013 10,000 On May 8, 2013, the Company's Board of Directors approved the grant of 26,361 November 8, 2013 On August 7, 2013, the Company's Board of Directors approved the grant of (i) 192,370 August 7, 2016 674,205 February 7, 2014 On August 7, 2014, the Company's Board of Directors approved the grant of (i) 282,460 August 7, 2017 9,488 February 7, 2015 O n August 7, 2015, the Company's Board of Directors approved the grant of (i) 192,300 August 7, 2018 10,907 February 7, 2016 A summary of the nonvested shares activity for the years ended December 31, 2015, 2014 and 2013 is as follows: Number of Nonvested Shares Weighted Average Grant date Fair Value US$ 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 Granted 203,207 6.00 Vested ( 171,488 ) 4.40 Forfeited ( 64,280 ) 4.65 Outstanding as of December 31, 2015 614,727 5.54 Expected to vest as of December 31, 2015 561,237 5.54 The total fair value of shares vested during the years ended December 31, 2015, 2014 and 2013 was US$ 754,547 3,090,766 1,499,941 The Company recognized US$ 813,699 1,003,040 3,630,565 As of December 31, 2015, total unrecognized compensation cost relating to nonvested shares was US$ 1,903,077 1.65 Stock options On August 7, 2010, the Company's Board of Directors approved the grant of stock options to purchase 445,500 8.01 three On October 10, 2015, the Company's Board of Directors approved the grant of stock options to purchase 72,000 0.24 three February 1, 2016 On October 10, 2015, the Company's Board of Directors also approved the grant of stock options to purchase 450,000 0.24 The options have a performance condition which requires the consultants to develop specified number of new end customers during the service period of one year. six The awards will be forfeited if such performance condition is not met at the end of the service period. Selling and marketing expenses are recognized through the period of service as the service is performed and adjusted for changes in fair value until performance is complete. A summary of stock options activity for the years ended December 31, 2015, 2014 and 2013 is as follows. Number of Options Outstanding Weighted Average Exercise Price US$ Outstanding as of December 31, 2012 148,500 8.01 Expired (148,500 ) 8.01 Outstanding as of December 31, 2013 and 2014 - - Granted 72,000 0.24 Outstanding as of December 31, 2015 72,000 0.24 The Company recognized US$ 230,463 nil 127,215 of share-based compensation expense in general and administration expenses relating to stock options for the years ended December 31, 2015, 2014 and 2013, respectively.

Earnings per share

Earnings per share	12 Months Ended
	Dec. 31, 2015
Earnings per share [Abstract]
Earnings per share	Note 19– Earnings per share Basic and diluted earnings per share are calculated as follows: Years Ended December 31, 2015 2014 2013 US$ US$ US$ Numerator: Net income 83,732,279 120,776,369 133,838,845 Less: Earnings allocated to participating Series D convertible preferred stock (20,350,826 ) (29,552,623 ) (33,229,887 ) Earnings allocated to participating nonvested shares (770,145 ) (1,026,493 ) (1,347,073 ) Net income for basic and diluted earnings per share 62,611,308 90,197,253 99,261,885 Denominator: Denominator for basic earnings per share 49,225,566 48,833,434 47,794,028 Dilutive effect of outstanding share options 3,894 - - Denominator for diluted earnings per share 49,229,460 48,833,434 47,794,028 Earnings per common share: Basic and diluted earnings per common share 1.27 1.85 2.08 The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the years ended December 31, 2015, 2014 and 2013, because their effects are anti-dilutive: Years Ended December 31, 2015 2014 2013 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 Shares issuable upon exercise of Series A placement agent warrant - - 117,261

Statutory reserves

Statutory reserves	12 Months Ended
	Dec. 31, 2015
Statutory reserves [Abstract]
Statutory reserves	Note 20 – 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, 2015, 2014 and 2013, China XD' subsidiaries in the PRC made appropriations to the reserve fund of RMB 48,174,525 7,651,365 37,156,541 30,075,331 140,005,280 22,575,538 91,830,755 54,674,214

Commitments and contingencies

Commitments and contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and contingencies [Abstract]
Commitments and contingencies	Note 21 – Commitments and contingencies (1) Lease commitments Future minimum lease payments under non-cancellable operating leases agreements as of December 31, 2015 were as follows. The Company's leases do not contain any contingent rent payments terms. US$ Years ending December 31, 2016 1,469,537 2017 1,336,389 2018 885,979 2019 113,521 2020 113,521 2021 and thereafter 1,031,145 Rental expenses incurred for operating leases of plant and equipment and office spaces were US$ 1,698,088 1,476,640 1,042,894 (2) Sichuan plant construction and equipment On March 8, 2013, Xinda Holding (HK) Company Limited ("Xinda Holding (HK)") 1.8 0.6 137.2 21.1 for facility construction, and RMB 17.9 2.8 (3) Dubai plant construction and equipment On January 5, 2015, AL Composites entered into an equipment purchase contract with Peaceful for a total consideration of US$ 271.2 101.2 6.7 1.8 0.9 (4) Xinda Group construction and equipment As of December 31, 2015, Xinda Group 8.9 1.4 (5) 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 Court held a hearing on the Company's motion to dismiss on October 22, 2015, but has not yet issued a ruling.

Revenues

Revenues	12 Months Ended
	Dec. 31, 2015
Revenues [Abstract]
Revenues	Note 22 – Revenues Revenues consist of the following: Years Ended December 31, 2015 2014 2013 US$ US$ US$ Modified Polyamide 66 (PA66) 219,082,301 192,374,156 195,471,978 Modified Polyamide 6 (PA6) 203,485,029 223,122,191 216,210,438 Plastic Alloy 350,620,202 400,306,257 296,635,139 Modified Polypropylene (PP) 164,828,880 232,421,229 286,263,653 Modified Acrylonitrile butadiene styrene (ABS) 40,510,344 36,804,599 32,440,913 Polyoxymethylenes (POM) 3,481,072 3,606,000 2,835,335 Polyphenylene Oxide (PPO) 12,984,368 14,830,647 13,570,734 Polylactide (PLA) 5,661 13,952 - Raw materials 3,373,854 7,206,661 5,373,656 Others 821,183 - - Subtotal 999,192,894 1,110,685,692 1,048,801,846 Service revenue - - 2,014,518 Total Revenue 999,192,894 1,110,685,692 1,050,816,364

Selected Quarterly Financial In

Selected Quarterly Financial Information	12 Months Ended
	Dec. 31, 2015
Selected Quarterly Financial Information [Abstract]
Selected Quarterly Financial Information	Note 23 – 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 2015 and 2014 (in millions, except gross margin and per share amounts): Fourth Quarter Third Quarter Second Quarter First Quarter 2015 : Revenues $ 272.8 $ 239.1 $ 265.4 $ 221.9 Gross profit $ 52.0 $ 29.3 $ 51.5 $ 48.6 Net income $ 26.8 $ 6.0 $ 25.5 $ 25.4 Earnings per share Basic and diluted $ 0.41 $ 0.09 $ 0.39 $ 0.39 Fourth Quarter Third Quarter Second Quarter First Quarter 201 4 : 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 $ 22.0 Earnings per share Basic $ 0.54 $ 0.66 $ 0.30 $ 0.34 Diluted $ 0.54 $ 0.62 $ 0.30 $ 0.34

Geographic Revenue Information

Geographic Revenue Information	12 Months Ended
	Dec. 31, 2015
Geographic Revenue Information [Abstract]
Geographic Revenue Information	Note 24 – 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, 2015 2014 2013 US$ US$ US$ Revenues (in US$ millions) PRC (excluding HK SAR, Macau SAR and Taiwan) 927.6 970.5 1,050.8 ROK 71.6 140.1 - Total 999.2 1,110.6 1,050.8

Summary of significant accoun32

Summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2015
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, 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 (loss) 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 consists 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 twelve 2.6 3.0 Cash deposits in bank that are restricted as to withdrawal or usage for up to 12 months are reported as restricted cash in the consolidated balance sheets and excluded from cash and cash equivalents in the consolidated statements of cash flows. Cash deposits of US$ 16,907,470 17,728,782 that are restricted for period beyond 12 months from the balance sheet date are included in other non-current assets in the consolidated balance sheets and also excluded from 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$ 8,069,475 11,868,855 nil 676,917 Short-term bank deposits that are pledged as collateral for short-term and long-term bank borrowings are reported as restricted cash and amounted to US$ 32,010,452 nil 16,907,470 17,728,782 Short-term bank deposits that are related to government grant are reported as restricted cash and amounted to US$ 10,772,400 nil
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 net realizable value. 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 Machinery, equipment and furniture 5 10 Motor vehicles 5 An appropriate allocation of depreciation expense of property, plant and equipment attributable to manufacturing activities based 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. 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 a land use right is usually paid in one lump sum at the date the right is granted. The prepayment usually covers the entire 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 Amortization expense of land use rights was US$ 411,178 259,310 224,587
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 ROK, 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, 2015, 2014 and 2013, sales returns were minimal. 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 consolidated balance sheets 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 related to the acquisition of assets are recorded as deferred income on the consolidated balance sheets when the grants become receivable, and recognized as other income in the consolidated statements of comprehensive income on a straight-line basis over the estimated useful lives of those assets.
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
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 1,788,552 1,555,471 1,024,728 For the years ended December 31, 2015 2014 and 2013, 77 78 80 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 and redeemable 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: - Level 2 Inputs - Level 3 Inputs 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, 2015 and 2014 are categorized as Level 2 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, which was measured at fair value on a recurring basis as of December 31, 2014, 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, 2015 and 2014. 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, 2015, the carrying amount and estimated fair value of the notes payable were US$ 145,634,996 127,219,500 - 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 In 2015, the Company elected to early adopt the Accounting Standards Update ("ASU") No. 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires the debt issuance costs be presented on the balance sheet as a direct deduction from the carrying amount of the related debt liability, instead of reported on the balance sheet as an asset. The costs will continue to be amortized to interest expense using the effective interest method. Upon adoption of the guidance, the debt issuance costs in the amount of US$ 4,243,412 In 2015, the Company elected to early adopt the ASU No. 2015-11, Simplifying the Measurement of Inventory, which changes the measurement principle of inventory from the lower of cost or market to lower of cost and net realizable value, and requires prospective adoption. Net realizable value is defined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The ASU eliminates the guidance that entities consider replacement cost or net realizable value less an approximately normal profit margin when measuring inventory when cost is determined on a first-in-first-out or average cost basis. The Company applied this new measurement principle of inventory as of December 31, 2015. The adaption of ASU No. 2015-11 does not have any impact on the Company's consolidated financial statements. In 2015, the Company elected to early adopt the ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes , which requires entities with a classified balance sheet to present all deferred tax assets and liabilities as noncurrent. The Company adopted this new guidance retrospectively. The adoption of ASU No. 2015-17 does not have any impact on the Company's consolidated financial statements. The Financial Accounting Standards Board issued Accounting Standards Codification (“ASC”) Topic 842, Leases, in February 2016. ASC Topic 842 requires a lessee to recognize all leases, including operating leases, on balance sheet via a right-of-use asset and lease liability, unless the lease is a short-term lease (one with an accounting lease term of 12 months or less). All (or a portion of) fixed payments by the lessee to cover lessor costs related to ownership of the underlying assets, or executory costs, that do not represent payments for a good or service will be considered lease payments and reflected in the measurement of lease assets and lease liabilities by lessees. The new standard does not substantially change lessor accounting from current U.S. GAAP. The new standard also requires lessees and lessors to disclose more qualitative and quantitative information about their leases than current U.S. GAAP does. The standard is applied retrospectively, with elective reliefs. The new standard is effective for annual and interim reporting periods beginning after December 15, 2018 for a public business entity. Early adoption is permitted. The Company has not yet determined the impact of the new standard on its current policies for leases.

Description of business and s33

Description of business and significant concentrations and risks (Tables)	12 Months Ended
	Dec. 31, 2015
Description of business and significant concentrations and risks [Abstract]
Schedule of Sales Concentrations by Major Distributors	(in millions, except percentage) Years Ended December 31, 2015 2014 2013 US$ % US$ % US$ % Distributor A, located in PRC 192.0 19.2 % 176.6 15.9 % 209.4 19.9 % Distributor B, located in PRC 155.3 15.5 % 136.4 12.3 % 250.7 23.9 % Distributor C, located in PRC 127.3 12.7 % 138.5 12.5 % 63.8 6.1 % Distributor D, located in PRC 112.1 11.2 % 134.0 12.1 % 136.0 12.9 % Distributor E, located in PRC 106.5 10.7 % 98.0 8.8 % 38.8 3.7 % Distributor F, located in PRC 81.8 8.2 % 139.8 12.6 % 138.1 13.1 % Direct Customer G, located in the ROK 71.6 7.2 % 140.1 12.6 % - - Total 846.6 84.7 % 963.4 86.7 % 836.8 79.6 %
Schedule of Cash and Cash Equivalents	December 31, 2015 December 31, 2014 US$ US$ RMB denominated bank deposits with: Financial Institutions in the PRC 417,430,412 311,377,750 Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR") 13,778 2,617 Financial Institution in Dubai, United Arab Emirates ("UAE") 3,023 170 U.S. dollar denominated bank deposits with: Financial Institution in the U.S. 226,010 770,704 Financial Institutions in the PRC 17,109 17,139 Financial Institution in Hong Kong SAR 63,854 1,366,224 Financial Institution in Macau Special Administrative Region ("Macau SAR") 37,120 47,868 Financial Institution in Dubai, UAE 7,474,960 481,179 Euro denominated bank deposits with: Financial institution in Hong Kong SAR - 83,017 Financial institution in Dubai, UAE 3,011 3,355 HK dollar denominated bank deposits with: Financial institution in Hong Kong SAR 336 581 Dirham denominated bank deposits with: Financial institution in Dubai, UAE 37,278 112,815

Summary of significant accoun34

Summary of significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2015
Summary of significant accounting policies [Abstract]
Schedule of Estimated Useful Lives of Property, Plant and Equipment	Estimated Useful Life Workshops and buildings 39 Machinery, equipment and furniture 5 10 Motor vehicles 5

Accounts receivable (Tables)

Accounts receivable (Tables)	12 Months Ended
	Dec. 31, 2015
Accounts receivable [Abstract]
Schedule of Accounts Receivable	December 31, 2015 2014 US$ US$ Accounts receivable 234,583,370 204,108,050 Allowance for doubtful accounts (40,631 ) (109,912 ) Accounts receivable, net 234,542,739 203,998,138
Schedule of Aging of Accounts Receivable	December 31, 2015 December 31, 2014 US$ US$ Aging: – current 234,396,244 203,760,775 – 1-3 months past due 146,495 208,482 – 4-6 months past due - - – 7-12 months past due - 5,560 – greater than one year past due 40,631 133,233 Total accounts receivable 234,583,370 204,108,050
Schedule of Movements in Allowance for Doubtful Accounts	Year ended December 31, 2015 2014 US$ US$ Balance at the beginning of the year (109,912 ) (145,761 ) Reversal of bad debt allowance 69,281 35,849 Balance at the end of the year (40,631 ) (109,912 )

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2015
Inventories [Abstract]
Schedule of Inventories	December 31, 2015 2014 US$ US$ Raw materials 287,995,933 241,853,814 Work in progress 164,034 207,181 Finished goods 6,505,228 7,736,249 Total inventories 294,665,195 249,797,244

Prepaid expenses and other cu37

Prepaid expenses and other current assets (Tables)	12 Months Ended
	Dec. 31, 2015
Prepaid expenses and other current assets [Abstract]
Schedule of Prepaid Expense and Other Assets Current	December 31, 2015 2014 US$ US$ Receivables due from a customer in the ROK (i) 9,471,222 - Interest receivable (ii) 3,306,974 3,351,672 Value added taxes receivables 698,286 6,407,547 Advances to suppliers 68,354 168,614 Others (iii) 2,131,012 1,325,995 Total prepaid expenses and other current assets 15,675,848 11,253,828 (i) As of December 31, 2015, receivables due from a customer in the ROK represents the amount the Company paid to purchase raw materials on behalf of the customer in the ROK. (ii) Interest receivable mainly represents interest income accrued from time deposits and restricted cash. (iii) Others mainly include prepaid miscellaneous service fee, staff advance and prepaid rental fee.

Property, plant and equipment38

Property, plant and equipment, net (Tables)	12 Months Ended
	Dec. 31, 2015
Property, plant and equipment, net [Abstract]
Schedule of Property, Plant and Equipment	December 31, 2015 2014 US$ US$ Machinery, equipment and furniture 258,173,175 209,509,700 Motor vehicles 2,009,440 1,854,985 Workshops and buildings 76,924,199 79,009,346 Construction in progress 323,955,531 93,970,716 Total property, plant and equipment 661,062,345 384,344,747 Less: accumulated depreciation (89,315,838 ) (66,020,147 ) Property, plant and equipment, net 571,746,507 318,324,600
Schedule of the Allocation of Depreciation Expense on Property, Plant and Equipment	Years Ended December 31, 2015 2014 2013 US$ US$ US$ Cost of revenues 21,980,993 19,407,668 18,578,088 General and administrative expenses 1,531,389 1,155,419 958,976 Research and development expenses 3,615,758 2,094,496 1,659,072 Selling expenses 894 - - Total depreciation expense 27,129,034 22,657,583 21,196,136

Prepayments to equipment and 39

Prepayments to equipment and construction suppliers (Tables)	12 Months Ended
	Dec. 31, 2015
Prepayments to equipment and construction suppliers [Abstract]
Schedule of Total Prepayments to Equipment and Construction Suppliers	December 31, 2015 2014 US$ US$ Jiamu (i) 11,712,843 182,259,578 Peaceful (ii) 170,009,200 - Others 1,503,963 - Total Prepayments to equipment and construction suppliers 183,226,006 182,259,578 (i) In December 2013, the Company entered into an equipment purchase contract with Harbin Jiamu Import & Export Trading Co., Ltd ("Jiamu Trading") for a total consideration of RMB 1,629.3 70 89.7 16.3 2.5 1,608.2 247.2 1,130.9 182.3 70 (ii) On January 5, 2015, AL Composites Materials FZE ("AL Composites") entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of US$ 271.2 170.0

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2015
Borrowings [Abstract]
Schedule of Short-term Loans	December 31, 2015 2014 US$ US$ Unsecured loans 64,555,795 47,223,028 Loans secured by accounts receivable 43,037,196 40,292,686 Loans secured by restricted cash 27,100,000 - Current portion of long-term bank loans (note b) 149,646,098 12,219,708 Total short-term loans, including current portion of long-term bank loans 284,339,089 99,735,422
Schedule of Long-Term Debt	December 31, 2015 2014 US$ US$ Secured loans 81,164,800 70,000,000 Unsecured loans 175,963,007 116,494,154 Less: current portion 149,646,098 12,219,708 Total long-term bank loans, excluding current portion 107,481,709 174,274,446

Notes Payable (Tables)

Notes Payable (Tables)	12 Months Ended
	Dec. 31, 2015
Notes Payable [Abstract]
Schedule of Debt Redemption	Year Redemption Price 2017 105.875 % 2018 102.938 %

Accrued expenses and other cu42

Accrued expenses and other current liabilities (Tables)	12 Months Ended
	Dec. 31, 2015
Accrued expenses and other current liabilities [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	December 31, 2015 2014 US$ US$ Payables for purchase of property, plant and equipment 42,524,903 7,234,607 Accrued freight expenses 1,579,936 1,688,431 Accrued interest expenses 7,800,481 9,031,741 Advance from customers (i) 82,009,002 63,414 Non income tax payables 4,353,730 2,322,006 Others (ii) 2,720,660 4,144,384 Total accrued expenses and other current liabilities 140,988,712 24,484,583 (i) Advance from customers mainly represent the advance received from two customers in the PRC for the raw material purchases during the 4th quarter of 2015. (ii) Others mainly represent accrued payroll and employee benefits and other accrued miscellaneous operating expenses.

Related party transactions (Tab

Related party transactions (Tables)	12 Months Ended
	Dec. 31, 2015
Related party transactions [Abstract]
Schedule of Significant Related Party Transactions	Years Ended December 31, 2015 2014 2013 US$ US$ US$ Costs and expenses resulting from transactions with related parties: Rental expenses for plant and office space 777,248 791,460 801,715
Schedule of Amounts Due From and To Related Parties	December 31, 2015 2014 US$ US$ Amounts due from a related party: Prepaid rental expenses to Xinda High-Tech 244,836 220,262 December 31, 2015 2014 US$ US$ Amounts due to a related party Rental payable to Mr Han's son 8,439 -
Schedule of Plant and Office Buildings in Harbin	Premise Leased Area (M 2 Annual Rental Fee (US$) Period of Lease Office building 23,894 758,983 Between January 1, 2014 and December 31, 2018 Premise Leased Area (M 2 Annual Rental Fee (US$) Period of Lease Facility 3,134 11,912 Between January 1, 2015 and September 30, 2015 Facility 200 6,353 Between August 17, 2014 and August 16, 2016

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Taxes [Abstract]
Schedule of Components of Income Before Income Taxes	Years Ended December 31, 2015 2014 2013 US$ US$ US$ US (3,512,598 ) (4,957,190 ) (4,768,725 ) BVI (18,685,588 ) (16,070,146 ) (7,685 ) Hong Kong (306,945 ) (973,523 ) (815,408 ) Dubai 34,554,739 83,267,935 - PRC, excluding Hong Kong 89,920,646 77,775,570 186,127,783 Total income before income taxes 101,970,254 139,042,646 180,535,965
Schedule of Income Tax Expense (Benefit)	Years Ended December 31, 2015 2014 2013 US$ US$ US$ Current income tax expense-PRC 20,618,211 20,089,436 47,559,763 Current income tax expense-US - 195,598 1,017,585 Deferred income tax benefit-PRC (2,380,236 ) (2,018,757 ) (1,880,228 ) Total income tax expense 18,237,975 18,266,277 46,697,120
Schedule of Effective Income Tax Rate Reconciliation	Years Ended December 31, 2015 2014 2013 US$ US$ US$ PRC statutory income tax rate 25 % 25 % 25 % Increase (decrease) in effective income tax rate resulting from: Tax rate differential on US entities not subject to PRC income tax - - (0.2 )% Tax rate differential on HK entities not subject to PRC income tax - - 0.1 % Tax rate differential on BVI entities not subject to PRC income tax 4.6 % 2.9 % - Tax rate differential on UAE entities not subject to PRC income tax (8.5 )% (15.0 )% - Non-deductible expenses 0.4 % 0.6 % 0.8 % Preferential tax rate (4.5 )% (3.3 )% (0.7 )% Change in valuation allowance 1.2 % 0.5 % (0.0 )% R&D additional deduction (2.6 )% 0.0 % 0.0 % Others 2.3 % 2.4 % 0.9 % Effective income tax rate 17.9 % 13.1 % 25.9 %
Schedule of the Principal Components of Deferred Income Tax Assets and Deferred Income Tax Liabilities	December 31, 2015 2014 US$ US$ Deferred income tax assets: Tax loss carry forwards 1,941,124 727,711 Less: valuation allowance (1,941,124 ) (727,711 ) Deferred income tax assets, net - - Deferred income tax liabilities: Net assets of Research Institute granted to Research Center - 1,185,638 Forward contract - (604 ) Property, plant and equipment 13,874,224 15,766,517 Total deferred income tax liabilities (included in other non-current liabilities 13,874,224 16,951,551
Schedule of Deferred Tax Asset Valuation Allowance	Years Ended December 31, 2015 2014 2013 US$ US$ US$ Balance at the beginning of the year 727,711 73,182 556,677 Expiration due to liquidation (68,070 ) - (437,762 ) Additions of valuation allowance 1,333,527 662,151 72,305 Reduction of valuation allowance (52,044 ) (7,622 ) (118,038 ) Balance at the end of the year 1,941,124 727,711 73,182
Reconciliation of Unrecognized Tax Benefits	Year ended December 31, 2015 2014 2013 US$ US$ US$ Balance at beginning of year 14,609,258 8,807,490 - Increase related to current year tax positions 7,051,049 5,801,768 8,807,490 Balance at end of year 21,660,307 14,609,258 8,807,490

Other non-current liabilities (

Other non-current liabilities (Tables)	12 Months Ended
	Dec. 31, 2015
Other non-current liabilities [Abstract]
Schedule of other non-current liabilities	2015 2014 US$ US$ Income tax payable-noncurrent (i) 24,172,693 14,025,825 Deferred income tax liabilities (note 12) 13,874,224 16,951,551 Total other non-current liabilities 38,046,917 30,977,376 (i) Income tax payable-noncurrent represents the accumulative balance of unrecognized tax benefits and related accrued interest.

Warrants (Tables)

Warrants (Tables)	12 Months Ended
	Dec. 31, 2015
Warrants [Abstract]
Schedule of Changes in Fair Value of Warrants	Series A investor warrants Series A placement agent Series C p lacement agent warrants Total 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, 2015
Stock based compensation [Abstract]
Schedule of Stock Options Activity	Number of Nonvested Shares Weighted Average Grant date Fair Value US$ 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 Granted 203,207 6.00 Vested ( 171,488 ) 4.40 Forfeited ( 64,280 ) 4.65 Outstanding as of December 31, 2015 614,727 5.54 Expected to vest as of December 31, 2015 561,237 5.54
Schedule of Nonvested Share Activity	Number of Options Outstanding Weighted Average Exercise Price US$ Outstanding as of December 31, 2012 148,500 8.01 Expired (148,500 ) 8.01 Outstanding as of December 31, 2013 and 2014 - - Granted 72,000 0.24 Outstanding as of December 31, 2015 72,000 0.24

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings per share [Abstract]
Calculation of Basic and Diluted Earnings Per Share	Years Ended December 31, 2015 2014 2013 US$ US$ US$ Numerator: Net income 83,732,279 120,776,369 133,838,845 Less: Earnings allocated to participating Series D convertible preferred stock (20,350,826 ) (29,552,623 ) (33,229,887 ) Earnings allocated to participating nonvested shares (770,145 ) (1,026,493 ) (1,347,073 ) Net income for basic and diluted earnings per share 62,611,308 90,197,253 99,261,885 Denominator: Denominator for basic earnings per share 49,225,566 48,833,434 47,794,028 Dilutive effect of outstanding share options 3,894 - - Denominator for diluted earnings per share 49,229,460 48,833,434 47,794,028 Earnings per common share: Basic and diluted earnings per common share 1.27 1.85 2.08
Summary of Potentially Dilutive Securities	Years Ended December 31, 2015 2014 2013 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 Shares issuable upon exercise of Series A placement agent warrant - - 117,261

Commitments and contingencies (

Commitments and contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and contingencies [Abstract]
Schedule of Future Minimum Rental Payments	US$ Years ending December 31, 2016 1,469,537 2017 1,336,389 2018 885,979 2019 113,521 2020 113,521 2021 and thereafter 1,031,145

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2015
Revenues [Abstract]
Revenues	Years Ended December 31, 2015 2014 2013 US$ US$ US$ Modified Polyamide 66 (PA66) 219,082,301 192,374,156 195,471,978 Modified Polyamide 6 (PA6) 203,485,029 223,122,191 216,210,438 Plastic Alloy 350,620,202 400,306,257 296,635,139 Modified Polypropylene (PP) 164,828,880 232,421,229 286,263,653 Modified Acrylonitrile butadiene styrene (ABS) 40,510,344 36,804,599 32,440,913 Polyoxymethylenes (POM) 3,481,072 3,606,000 2,835,335 Polyphenylene Oxide (PPO) 12,984,368 14,830,647 13,570,734 Polylactide (PLA) 5,661 13,952 - Raw materials 3,373,854 7,206,661 5,373,656 Others 821,183 - - Subtotal 999,192,894 1,110,685,692 1,048,801,846 Service revenue - - 2,014,518 Total Revenue 999,192,894 1,110,685,692 1,050,816,364

Selected Quarterly Financial 51

Selected Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 31, 2015
Selected Quarterly Financial Information [Abstract]
Summary of the Company's quarterly financial information	Fourth Quarter Third Quarter Second Quarter First Quarter 2015 : Revenues $ 272.8 $ 239.1 $ 265.4 $ 221.9 Gross profit $ 52.0 $ 29.3 $ 51.5 $ 48.6 Net income $ 26.8 $ 6.0 $ 25.5 $ 25.4 Earnings per share Basic and diluted $ 0.41 $ 0.09 $ 0.39 $ 0.39 Fourth Quarter Third Quarter Second Quarter First Quarter 201 4 : 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 $ 22.0 Earnings per share Basic $ 0.54 $ 0.66 $ 0.30 $ 0.34 Diluted $ 0.54 $ 0.62 $ 0.30 $ 0.34

Geographic Revenue Information

Geographic Revenue Information (Tables)	12 Months Ended
	Dec. 31, 2015
Geographic Revenue Information [Abstract]
Summary of revenues from geographic areas	Years Ended December 31, 2015 2014 2013 US$ US$ US$ Revenues (in US$ millions) PRC (excluding HK SAR, Macau SAR and Taiwan) 927.6 970.5 1,050.8 ROK 71.6 140.1 - Total 999.2 1,110.6 1,050.8

Description of business and s53

Description of business and significant concentrations and risks (Sales and Purchase Concentration) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Concentration Risk [Line Items]
Revenues	$ 272,800,000	$ 239,100,000	$ 265,400,000	$ 221,900,000	$ 307,100,000	$ 315,700,000	$ 264,200,000	$ 223,600,000	$ 999,192,894	$ 1,110,685,692	$ 1,050,816,364
Customer Concentration Risk [Member] | Revenues [Member] | Distributor A [Member]
Concentration Risk [Line Items]
Revenues									$ 192,000,000	$ 176,600,000	$ 209,400,000
Concentration risk, percentage									19.20%	15.90%	19.90%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor B [Member]
Concentration Risk [Line Items]
Revenues									$ 155,300,000	$ 136,400,000	$ 250,700,000
Concentration risk, percentage									15.50%	12.30%	23.90%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor C [Member]
Concentration Risk [Line Items]
Revenues									$ 127,300,000	$ 138,500,000	$ 63,800,000
Concentration risk, percentage									12.70%	12.50%	6.10%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor D [Member]
Concentration Risk [Line Items]
Revenues									$ 112,100,000	$ 134,000,000	$ 136,000,000
Concentration risk, percentage									11.20%	12.10%	12.90%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor E [Member]
Concentration Risk [Line Items]
Revenues									$ 106,500,000	$ 98,000,000	$ 38,800,000
Concentration risk, percentage									10.70%	8.80%	3.70%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor F [Member]
Concentration Risk [Line Items]
Revenues									$ 81,800,000	$ 139,800,000	$ 138,100,000
Concentration risk, percentage									8.20%	12.60%	13.10%
Customer Concentration Risk [Member] | Revenues [Member] | Direct Customer G [Member]
Concentration Risk [Line Items]
Revenues									$ 71,600,000	$ 140,100,000
Concentration risk, percentage									7.20%	12.60%
Customer Concentration Risk [Member] | Revenues [Member] | Major Distributors Aggregate [Member]
Concentration Risk [Line Items]
Revenues									$ 846,600,000	$ 963,400,000	$ 836,800,000
Concentration risk, percentage									84.70%	86.70%	79.60%
Raw Material Supplier Concentration Risk [Member] | Purchase of raw materials [Member] | Majority Owner of Equipment Distributor [Member]
Concentration Risk [Line Items]
Concentration risk, percentage										0.40%	13.20%
Raw Material Supplier Concentration Risk [Member] | Purchase of raw materials [Member] | Seven Major Raw Material Distributors [Member]
Concentration Risk [Line Items]
Concentration risk, percentage									80.00%
Raw Material Supplier Concentration Risk [Member] | Purchase of raw materials [Member] | Eight Major Raw Material Distributors [Member]
Concentration Risk [Line Items]
Concentration risk, percentage										88.30%
Raw Material Supplier Concentration Risk [Member] | Purchase of raw materials [Member] | Three Major Raw Material Distributors [Member]
Concentration Risk [Line Items]
Concentration risk, percentage											65.50%
Raw Material Supplier Concentration Risk [Member] | Purchase of equipment [Member] | Two Major Equipment Distributors [Member]
Concentration Risk [Line Items]
Concentration risk, percentage									99.80%	99.60%	34.60%
Raw Material Supplier Concentration Risk [Member] | Purchase of equipment [Member] | One Major Equipment Distributor [Member]
Concentration Risk [Line Items]
Concentration risk, percentage									84.80%	1.90%	34.60%

Description of business and s54

Description of business and significant concentrations and risks (Cash Concentration) (Details)	Dec. 31, 2015USD ($)	Dec. 31, 2015CNY (¥)	Dec. 31, 2015HKD	Dec. 31, 2015MOP	Dec. 31, 2014USD ($)
RMB denominated bank deposits with financial institutions in the PRC [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	$ 417,430,412				$ 311,377,750
Cash balance insured by the government authority | ¥		¥ 500,000
RMB denominated bank deposits with Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR") [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	13,778				2,617
RMB denominated bank deposits with Financial Institution in Dubai, United Arab Emirates ("UAE") [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	3,023				170
U.S. dollar denominated bank deposits with a financial institution in the U.S. [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	226,010				770,704
U.S. dollar denominated bank deposits with financial institutions in the PRC [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	17,109				17,139
U.S. dollar denominated bank deposits with a financial institution in Hong Kong SAR [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	63,854				1,366,224
Cash balance insured by the government authority | HKD			HKD 500,000
U.S. dollar denominated bank deposits with Financial Institution in Macau Special Administrative Region ("Macau SAR") [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	37,120				47,868
U.S. dollar denominated bank deposits with Financial Institution in Dubai, UAE [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	$ 7,474,960				481,179
Euro denominated bank deposits with a financial institution in Hong Kong SAR [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks					83,017
Euro denominated bank deposits with a financial institution in Dubai, UAE [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	$ 3,011				3,355
HK dollar denominated bank deposits with Financial institution in Hong Kong SAR [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	336				581
Dirham denominated bank deposits with Financial institution in Dubai, UAE [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash and time deposits maintained at banks	$ 37,278				$ 112,815
MOP dollar denominated bank deposits with Financial Institution in Macau SAR [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash balance insured by the government authority | MOP				MOP 500,000

Summary of significant accoun55

Summary of significant accounting policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of significant accounting policies [Abstract]
Noncurrent restricted cash	$ 16,907,470	$ 17,728,782
Restricted Cash and Cash Equivalents Items [Line Items]
Land use right period	50 years
Amortization expense of land use rights	$ 411,178	$ 259,310	$ 224,587
Service revenue generated in the PRC rate	5.60%
Recognized tax positions percent likely to be recognized	50.00%
Effective interest rate per annum of time deposits	2.60%	3.00%
Restricted cash	$ 50,852,327	$ 12,545,772
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Employer contribution percentage	40.00%
Employer contributions	$ 1,788,552	$ 1,555,471	$ 1,024,728
Percentage of costs of employee benefits recorded in general and administration expenses	77.00%	78.00%	80.00%
Minimum [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Time deposit maturity period	6 months
Maximum [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Time deposit maturity period	12 months
Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance costs		$ 4,243,412
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	$ 8,069,475	11,868,855
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
Short-term bank deposits pledged as collateral for short-term bank borrowings and long-term bank borrowings [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 32,010,452
Long-term bank deposits pledged as collateral for long-term bank borrowings [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	16,907,470	$ 17,728,782
Short-term bank deposits related to government grant [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 10,772,400

Summary of significant accoun56

Summary of significant accounting policies (Estimated Useful Life of Property, Plant and Equipment) (Details)	12 Months Ended
	Dec. 31, 2015
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 accoun57

Summary of significant accounting policies (Fair Value Measurements) (Details)	Dec. 31, 2015USD ($)
Carrying amount [Member]
Fair Value Measurements [Line Items]
Notes payable	$ 145,634,996
Estimated fair value [Member]
Fair Value Measurements [Line Items]
Notes payable	$ 127,219,500

Accounts receivable (Schedule o

Accounts receivable (Schedule of Accounts Receivable) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Accounts receivable [Abstract]
Accounts receivable	$ 234,583,370	$ 204,108,050
Allowance for doubtful accounts	(40,631)	(109,912)
Accounts receivable, net	234,542,739	203,998,138
Notes receivable	2,048,186	921,907
Accounts receivable pledged as collateral for short-term bank loans	$ 54,664,219	$ 50,473,063

Accounts receivable (Schedule59

Accounts receivable (Schedule of Aging of Accounts Receivable) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Aging:
current	$ 234,396,244	$ 203,760,775
Total accounts receivable	234,583,370	204,108,050
1-3 months past due [Member]
Aging:
Past due	$ 146,495	$ 208,482
4-6 months past due [Member]
Aging:
Past due
7-12 months past due [Member]
Aging:
Past due		$ 5,560
Greater than one year past due [Member]
Aging:
Past due	$ 40,631	$ 133,233

Accounts receivable (Movements

Accounts receivable (Movements in Allowance for Doubtful Accounts) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts receivable [Abstract]
Balance at the beginning of year	$ (109,912)	$ (145,761)
Reversal of bad debt allowance	69,281	35,849	$ 2,293
Balance at the end of year	$ (40,631)	$ (109,912)	$ (145,761)

Inventories (Details)

Inventories (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Inventories [Abstract]
Raw materials	$ 287,995,933	$ 241,853,814
Work in progress	164,034	207,181
Finished goods	6,505,228	7,736,249
Total inventories	$ 294,665,195	$ 249,797,244

Prepaid expenses and other cu62

Prepaid expenses and other current assets (Details) - USD ($)		Dec. 31, 2015	Dec. 31, 2014
Prepaid expenses and other current assets [Abstract]
Receivables due from a customer in the ROK	[1]	$ 9,471,222
Interest receivable	[2]	3,306,974	$ 3,351,672
Value added taxes receivables		698,286	6,407,547
Advances to suppliers		68,354	168,614
Others	[3]	2,131,012	1,325,995
Total prepaid expenses and other current assets		$ 15,675,848	$ 11,253,828
[1]	As of December 31, 2015, receivables due from a customer in the ROK represents the amount the Company paid to purchase raw materials on behalf of the customer in the ROK.
[2]	Interest receivable mainly represents interest income accrued from time deposits and restricted cash.
[3]	Others mainly include prepaid miscellaneous service fee, staff advance and prepaid rental fee.

Property, plant and equipment63

Property, plant and equipment, net (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 661,062,345	$ 384,344,747
Less accumulated depreciation	(89,315,838)	(66,020,147)
Property, plant and equipment, net	571,746,507	318,324,600
Dubai, UAE [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	83,800,000	82,000,000
Machinery, equipment and furniture [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	258,173,175	209,509,700
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	2,009,440	1,854,985
Workshops and buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	76,924,199	79,009,346
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 323,955,531	$ 93,970,716

Property, plant and equipment64

Property, plant and equipment, net (Allocated Depreciation Expense) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation expenses	$ 27,129,034	$ 22,657,583	$ 21,196,136
Interest costs capitalized as a component of the cost of construction in progress	231,356	113,317
Cost of revenues [Member]
Property, Plant and Equipment [Line Items]
Depreciation expenses	21,980,993	19,407,668	$ 18,578,088
General and administration expenses [Member]
Property, Plant and Equipment [Line Items]
Depreciation expenses	1,531,389	1,155,419	958,976
Research and development expenses [Member]
Property, Plant and Equipment [Line Items]
Depreciation expenses	3,615,758	$ 2,094,496	$ 1,659,072
Selling expenses [Member]
Property, Plant and Equipment [Line Items]
Depreciation expenses	$ 894

Prepayments to equipment and 65

Prepayments to equipment and construction suppliers (Schedule of Total Prepayments to Equipment and Construction Suppliers) (Details) (Details) - USD ($)		Dec. 31, 2015	Dec. 31, 2014
Prepayments to equipment suppliers [Line Items]
Total Prepayments to equipment and construction suppliers		$ 183,226,006	$ 182,259,578
Jiamu [Member]
Prepayments to equipment suppliers [Line Items]
Total Prepayments to equipment and construction suppliers	[1]	11,712,843	$ 182,259,578
Peaceful [Member]
Prepayments to equipment suppliers [Line Items]
Total Prepayments to equipment and construction suppliers	[2]	170,009,200
Others [Member]
Prepayments to equipment suppliers [Line Items]
Total Prepayments to equipment and construction suppliers		$ 1,503,963
[1]	In December 2013, the Company entered into an equipment purchase contract with Harbin Jiamu Import & Export Trading Co., Ltd ("Jiamu Trading") for a total consideration of RMB1,629.3 million to purchase 70 production lines and RMB89.7 million to purchase testing equipment. In August 2015, the Company signed a supplemental contract with Harbin Jiamu Science and Technology Co., Ltd. (together with Jiamu Trading as "Jiamu") to purchase testing equipment in the amount of RMB16.3 million (equivalent to US$2.5 million). As of December 31, 2015 and 2014, the Company has paid RMB1,608.2 million (equivalent to US$247.2 million) and RMB1,130.9 million (equivalent to US$182.3 million) for production lines and testing equipment, respectively. As of December 31, 2015, the Company has received the equipment of 70 production lines, and hence recorded the related amount from prepayments to construction in progress. The balance of Jiamu as of December 31, 2015 mainly represents the prepayment for testing equipment.
[2]	On January 5, 2015, AL Composites Materials FZE ("AL Composites") entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of US$271.2 million to purchase certain production and testing equipment. Pursuant to the contract with Peaceful, the Company has paid US$170.0 million as prepayments as of December 31, 2015.

Prepayments to equipment and 66

Prepayments to equipment and construction suppliers (Narrative) (Details) ¥ in Millions		1 Months Ended				12 Months Ended
		Aug. 31, 2015USD ($)	Aug. 31, 2015CNY (¥)	Jan. 31, 2015USD ($)	Mar. 31, 2013CNY (¥)	Dec. 31, 2013CNY (¥)item	Dec. 31, 2015USD ($)item	Dec. 31, 2015CNY (¥)item	Dec. 31, 2014USD ($)	Dec. 31, 2014CNY (¥)
Long-term deposits for equipment purchase [Line Items]
Prepayments to equipment and construction suppliers							$ 183,226,006		$ 182,259,578
Number of product line received under purchases contract | item							70	70
Jiamu [Member]
Long-term deposits for equipment purchase [Line Items]
Prepayments to equipment and construction suppliers	[1]						$ 11,712,843		$ 182,259,578
Peaceful [Member]
Long-term deposits for equipment purchase [Line Items]
Prepayments to equipment and construction suppliers	[2]						170,009,200
Property, Plant and Equipment [Member]
Long-term deposits for equipment purchase [Line Items]
Commitments | ¥					¥ 1,800
Working Capital [Member]
Long-term deposits for equipment purchase [Line Items]
Commitments | ¥					¥ 600
Equipment [Member]
Long-term deposits for equipment purchase [Line Items]
Number of product line purchases under contract | item						70
Equipment [Member] | Jiamu [Member]
Long-term deposits for equipment purchase [Line Items]
Prepayments to equipment and construction suppliers							$ 247,200,000	¥ 1,608.2	$ 182,300,000	¥ 1,130.9
Equipment [Member] | Harbin Jiamu Science and Technology Co., Ltd. [Member]
Long-term deposits for equipment purchase [Line Items]
Commitments		$ 2,500,000	¥ 16.3
Equipment [Member] | Harbin Jiamu Import Export Trading Co Ltd [Member]
Long-term deposits for equipment purchase [Line Items]
Commitments | ¥						¥ 1,629.3
Equipment [Member] | Peaceful [Member]
Long-term deposits for equipment purchase [Line Items]
Commitments				$ 271,200,000
Prepayments to equipment and construction suppliers				$ 170,000,000
Testing equipment [Member] | Harbin Jiamu Science and Technology Co., Ltd. [Member]
Long-term deposits for equipment purchase [Line Items]
Commitments | ¥						¥ 89.7
[1]	In December 2013, the Company entered into an equipment purchase contract with Harbin Jiamu Import & Export Trading Co., Ltd ("Jiamu Trading") for a total consideration of RMB1,629.3 million to purchase 70 production lines and RMB89.7 million to purchase testing equipment. In August 2015, the Company signed a supplemental contract with Harbin Jiamu Science and Technology Co., Ltd. (together with Jiamu Trading as "Jiamu") to purchase testing equipment in the amount of RMB16.3 million (equivalent to US$2.5 million). As of December 31, 2015 and 2014, the Company has paid RMB1,608.2 million (equivalent to US$247.2 million) and RMB1,130.9 million (equivalent to US$182.3 million) for production lines and testing equipment, respectively. As of December 31, 2015, the Company has received the equipment of 70 production lines, and hence recorded the related amount from prepayments to construction in progress. The balance of Jiamu as of December 31, 2015 mainly represents the prepayment for testing equipment.
[2]	On January 5, 2015, AL Composites Materials FZE ("AL Composites") entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of US$271.2 million to purchase certain production and testing equipment. Pursuant to the contract with Peaceful, the Company has paid US$170.0 million as prepayments as of December 31, 2015.

Borrowings (Schedule of Short-T

Borrowings (Schedule of Short-Term Loans, Including Current Portion of Long-Term Bank Loans) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Short-term bank loans, including current portion of long-term bank loans	$ 284,339,089	$ 99,735,422
Unsecured loans [Member]
Short-term Debt [Line Items]
Short-term bank loans, including current portion of long-term bank loans	64,555,795	47,223,028
Loans secured by accounts receivable [Member]
Short-term Debt [Line Items]
Short-term bank loans, including current portion of long-term bank loans	43,037,196	$ 40,292,686
Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Short-term bank loans, including current portion of long-term bank loans	27,100,000
Current portion of long-term loan [Member]
Short-term Debt [Line Items]
Short-term bank loans, including current portion of long-term bank loans	$ 149,646,098	$ 12,219,708

Borrowings (Current) (Narrative

Borrowings (Current) (Narrative) (Details) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)item	Dec. 31, 2015CNY (¥)	Dec. 31, 2014
Short-term Debt [Line Items]
Weighted average interest rate	4.20%	4.20%	5.70%
3-Month LIBOR [Member]
Short-term Debt [Line Items]
Debt instrument, interest rate	0.6127%	0.6127%
One-Year LIBOR [Member]
Short-term Debt [Line Items]
Debt instrument, interest rate	1.178%	1.178%
Secured loans by restricted cash [Member] | Bank Loan One [Member]
Short-term Debt [Line Items]
Debt instrument, issuance date	Jan. 1, 2015
Debt instrument, term of loan	1 year
Aggregated principal amount	$ 12
Debt instrument, issuer	HSBC Middle East
Variable rate basis	three-month LIBOR
Variable rate spread	1.80%
Debt instrument, collateral amount	$ 2.5	¥ 16.5
Secured loans by restricted cash [Member] | Bank Loan Two [Member]
Short-term Debt [Line Items]
Debt instrument, issuance date	Feb. 1, 2015
Debt instrument, term of loan	1 year
Aggregated principal amount	$ 16.6
Debt instrument, issuer	HSBC Middle East
Variable rate basis	three-month LIBOR
Variable rate spread	1.80%
Debt instrument, collateral amount	$ 3.5	22.8
Secured loans by restricted cash [Member] | Bank Loan Three [Member]
Short-term Debt [Line Items]
Debt instrument, issuance date	Jun. 1, 2015
Debt instrument, term of loan	1 year
Aggregated principal amount	$ 7
Debt instrument, issuer	Bank of China Luxemburg Branch
Variable rate basis	one-year LIBOR
Variable rate spread	0.80%
Debt instrument, collateral amount	$ 7.1	45.9
Secured loans by restricted cash [Member] | Bank Loan Four [Member]
Short-term Debt [Line Items]
Debt instrument, issuance date	Jul. 1, 2015
Debt instrument, term of loan	1 year
Aggregated principal amount	$ 3.5
Debt instrument, issuer	Bank of China Luxemburg Branch
Variable rate basis	one-year LIBOR
Variable rate spread	0.75%
Debt instrument, collateral amount	$ 3.5	23
Secured loans by restricted cash [Member] | Bank Loan Five [Member]
Short-term Debt [Line Items]
Debt instrument, issuance date	Sep. 28, 2015
Debt instrument, term of loan	6 months
Aggregated principal amount	$ 16.9	¥ 110
Debt instrument, issuer	Harbin Longjiang Bank
Debt instrument, interest rate	4.60%	4.60%
Number of debt instruments obtained | item	4
Loan by accounts receivables	$ 27.2	¥ 170
Secured loans by restricted cash [Member] | Bank Loan Six [Member]
Short-term Debt [Line Items]
Debt instrument, issuance date	Oct. 16, 2015
Debt instrument, term of loan	6 months
Aggregated principal amount	$ 21.5	¥ 140
Debt instrument, issuer	Harbin Longjiang Bank
Debt instrument, interest rate	4.60%	4.60%
Number of debt instruments obtained | item	5
Loan by accounts receivables	$ 21.4	¥ 139.3
Secured loans by restricted cash [Member] | Bank Loan Seven [Member]
Short-term Debt [Line Items]
Debt instrument, issuance date	Dec. 7, 2015
Debt instrument, term of loan	6 months
Aggregated principal amount	$ 4.6	¥ 30
Debt instrument, issuer	ICBC in Harbin
Debt instrument, interest rate	4.79%	4.79%
Loan by accounts receivables	$ 6.1	¥ 39.4

Borrowings (Schedule of Long-Te

Borrowings (Schedule of Long-Term Bank Loans Excluding Current Portion) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Long-term bank loans, excluding current portion	$ 107,481,709	$ 174,274,446
Secured loans [Member]
Debt Instrument [Line Items]
Long-term bank loans, excluding current portion	81,164,800	70,000,000
Unsecured loans [Member]
Debt Instrument [Line Items]
Long-term bank loans, excluding current portion	175,963,007	116,494,154
Current Portion [Member]
Debt Instrument [Line Items]
Long-term bank loans, excluding current portion	$ 149,646,098	$ 12,219,708

Borrowings (Non-current) (Narra

Borrowings (Non-current) (Narrative) (Details) ¥ in Millions, $ in Millions	Jun. 09, 2015USD ($)	Dec. 31, 2015USD ($)item	Dec. 31, 2015CNY (¥)
Debt Instrument [Line Items]
Total lines of credit		$ 733.2	¥ 4,770
Fifteen Month Unsecured Loan One [Member]
Debt Instrument [Line Items]
Initial term of loan		15 months
Number of debt instruments obtained | item		2
Aggregated principal amount | ¥			¥ 50
Debt instrument, interest rate		6.15%	6.15%
Debt Instrument, Issuance Date		Mar. 31, 2014
Debt Instrument, Maturity Date		Mar. 31, 2015
Debt instrument, issuer		Bank of Heilongjiang
Three Year Secured Loan [Member]
Debt Instrument [Line Items]
Initial term of loan		3 years
Aggregated principal amount		$ 70
Variable rate basis		3-month LIBOR
Variable rate basis (as a percent)		0.6127%	0.6127%
Security Deposit | ¥			¥ 110
Debt Instrument, Issuance Date		Jun. 12, 2014
Debt instrument, issuer		Bank of China Paris Branch
Repayments of Long-term Debt	$ 2	$ 2
One And Half Year Secured Loan [Member]
Debt Instrument [Line Items]
Initial term of loan		1 year 6 months
Aggregated principal amount		$ 15.2
Variable rate basis		three-month LIBOR
Variable rate basis (as a percent)		0.6127%	0.6127%
Spread over variable rate		1.50%
Security Deposit		$ 15.4	¥ 100
Debt Instrument, Issuance Date		Jan. 27, 2015
Debt instrument, issuer		Bank of China Macau Branch
Two Year Unsecured Loan Two [Member]
Debt Instrument [Line Items]
Initial term of loan		2 years
Aggregated principal amount		$ 15.4	¥ 100
Debt instrument, interest rate		6.00%	6.00%
Debt Instrument, Issuance Date		Jan. 23, 2015
Debt instrument, issuer		Agriculture Bank of China
Two Year Unsecured Loan One [Member]
Debt Instrument [Line Items]
Initial term of loan		2 years
Aggregated principal amount | ¥			¥ 199
Debt instrument, interest rate		6.60%	6.60%
Debt Instrument, Issuance Date		Dec. 11, 2014
Debt instrument, issuer		Bank of Communication
One And Half Year Unsecured Loan [Member]
Debt Instrument [Line Items]
Initial term of loan		1 year 6 months
Aggregated principal amount		$ 76.4
Debt instrument, interest rate		0.6127%	0.6127%
Variable rate basis		three-month LIBOR
Spread over variable rate		1.70%
Debt Instrument, Issuance Date		Dec. 16, 2014
Debt instrument, issuer		Bank of China Macau Branch
Two Year Unsecured Loan Three [Member]
Debt Instrument [Line Items]
Initial term of loan		2 years
Aggregated principal amount		$ 6.1	¥ 40
Debt instrument, interest rate		5.75%	5.75%
Debt Instrument, Issuance Date		Apr. 22, 2015
Debt instrument, issuer		Agriculture Bank of China
Thirteen Month Unsecured Loan Two [Member]
Debt Instrument [Line Items]
Initial term of loan		13 months
Aggregated principal amount		$ 7.7	¥ 50
Debt instrument, interest rate		5.25%	5.25%
Debt Instrument, Issuance Date		Jul. 30, 2015
Debt instrument, issuer		Harbin Longjiang Bank
Line of credit with remaining terms less than 12 months [Member]
Debt Instrument [Line Items]
Unusued lines of credit		$ 280.1	¥ 1,822.7
Line of credit with remaining terms beyond 12 months [Member]
Debt Instrument [Line Items]
Unusued lines of credit		$ 61.2	398.1
Unsecured Debt from Bank of China [Member] | Five Year Unsecured Loan [Member]
Debt Instrument [Line Items]
Initial term of loan		5 years
Aggregated principal amount		$ 40	¥ 260
Debt instrument, interest rate		4.75%	4.75%
Debt Instrument, Issuance Date		Oct. 1, 2015
Debt instrument, issuer		Bank of China

Notes Payable (Narrative) (Deta

Notes Payable (Narrative) (Details) - USD ($)	Feb. 04, 2014	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument, Redemption [Line Items]
Unamortized discount and debt issuance costs		$ 4,365,004	$ 5,626,355
Guaranteed Senior Notes Due 2019 [Member]
Debt Instrument, Redemption [Line Items]
Principal amount of debt	$ 150,000,000
Notes payable, interest rate	11.75%
Maturity date	Feb. 4, 2019
Issuance price percentage	99.08%
Payment start date	Aug. 4, 2014
Net proceeds from Guaranteed Senior Notes	$ 143,500,000
Interest expense		$ 18,710,825	$ 16,870,122
Guaranteed Senior Notes Due 2019 [Member] | Change of Control [Member]
Debt Instrument, Redemption [Line Items]
Redemption price, percentage of principal	101.00%
Guaranteed Senior Notes Due 2019 [Member] | 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	Feb. 4, 2017
Guaranteed Senior Notes Due 2019 [Member] | 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	Feb. 4, 2017

Notes Payable (Schedule of Debt

Notes Payable (Schedule of Debt Redemption) (Details)	Feb. 04, 2014
February 4, 2017 to February 4, 2018 [Member]
Debt Instrument [Line Items]
Redemption price, percentage of principal	105.875%
February 4, 2018 to February 4, 2019 [Member]
Debt Instrument [Line Items]
Redemption price, percentage of principal	102.938%

Accrued expenses and other cu73

Accrued expenses and other current liabilities (Details) - USD ($)		Dec. 31, 2015	Dec. 31, 2014
Accrued expenses and other current liabilities [Abstract]
Payables for purchase of property, plant and equipment		$ 42,524,903	$ 7,234,607
Accrued freight expenses		1,579,936	1,688,431
Accrued interest expenses		7,800,481	9,031,741
Advance from customers	[1]	82,009,002	63,414
Non income tax payables		4,353,730	2,322,006
Others	[2]	2,720,660	4,144,384
Accrued expenses and other current liabilities		$ 140,988,712	$ 24,484,583
[1]	Advance from customers mainly represent the advance received from two customers in the PRC for the raw material purchases during the 4th quarter of 2015.
[2]	Others mainly represent accrued payroll and employee benefits and other accrued miscellaneous operating expenses.

Related party transactions (Sch

Related party transactions (Schedule of Significant Related Party Transactions) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related party transactions [Abstract]
Rental expenses for plant and office spaces	$ 777,248	$ 791,460	$ 801,715

Related party transactions (S75

Related party transactions (Schedule of Amounts Due From Related Parties) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Prepaid rental expenses to related party	$ 244,836	$ 220,262
Rental payable to related party	8,439
Xinda High-Tech [Member]
Related Party Transaction [Line Items]
Prepaid rental expenses to related party	244,836	$ 220,262
Mr. Han's son [Member]
Related Party Transaction [Line Items]
Rental payable to related party	$ 8,439

Related party transactions (S76

Related party transactions (Schedule of Plant and Office Buildings in Harbin) (Details)	12 Months Ended
	Dec. 31, 2015USD ($)m²
Office Building 1 [Member]
Related Party Transaction [Line Items]
Annual Rental Fee | $	$ 758,983
Area (Square Meters) | m²	23,894
Lease start date	Jan. 1, 2014
Lease expiration period	Dec. 31, 2018
Facility [Member] | Mr. Han's son [Member]
Related Party Transaction [Line Items]
Annual Rental Fee | $	$ 11,912
Area (Square Meters) | m²	3,134
Lease start date	Jan. 1, 2015
Lease expiration period	Sep. 30, 2015
Facility 2 [Member] | Mr. Han's son [Member]
Related Party Transaction [Line Items]
Annual Rental Fee | $	$ 6,353
Area (Square Meters) | m²	200
Lease start date	Aug. 17, 2014
Lease expiration period	Aug. 16, 2016

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	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		$ 488,303,847	$ 434,416,319
Dubai [Member]
Operating Loss Carryforwards [Line Items]
Deferred income tax liabilities on undistributed earnings		117,827,046	$ 83,272,307
Tax Carryforward Group One [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 212,659
Tax loss carryforwards, expiration date		Dec. 31, 2033
Tax Carryforward Group Two [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 159,481
Tax loss carryforwards, expiration date		Dec. 31, 2034
Tax Carryforward Group Three [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 217,917
Tax loss carryforwards, expiration date		Dec. 31, 2035
Tax Carryforward Group Four [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 67,201
Tax loss carryforwards, expiration date		Dec. 31, 2018
Tax Carryforward Group Five [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 1,160,448
Tax loss carryforwards, expiration date		Dec. 31, 2019
Tax Carryforward Group Six [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 4,599,441
Tax loss carryforwards, expiration date		Dec. 31, 2020
Tax Carryforward Group Seven [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 5,827,090
Tax Carryforward Group Eight [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards		$ 2,018,829
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		$ 590,057

Income Taxes (Components of Inc

Income Taxes (Components of Income Before Income Taxes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	$ 101,970,254	$ 139,042,646	$ 180,535,965
US [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	(3,512,598)	(4,957,190)	(4,768,725)
BVI [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	(18,685,588)	(16,070,146)	(7,685)
Hong Kong [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	(306,945)	(973,523)	$ (815,408)
Dubai [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	34,554,739	83,267,935
PRC, excluding Hong Kong [Member]
Income (Loss) Before Income Taxes [Line Items]
Total income before income taxes	$ 89,920,646	$ 77,775,570	$ 186,127,783

Income Taxes (Schedule of Incom

Income Taxes (Schedule of Income Tax Expense (Benefit)) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Current income tax expense-PRC	$ 20,618,211	$ 20,089,436	$ 47,559,763
Current income tax expense-US		195,598	1,017,585
Deferred income tax benefit-PRC	$ (2,380,236)	(2,018,757)	(1,880,228)
Total income tax expense	$ 18,237,975	$ 18,266,277	$ 46,697,120

Income Taxes (Schedule of Effec

Income Taxes (Schedule of Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective income tax rate based on income tax expense and income before income taxes [Line Items]
PRC statutory income tax rate	25.00%	25.00%	25.00%
Increase (decrease) in effective income tax rate resulting from:
Non-deductible expenses	0.40%	0.60%	0.80%
Preferential tax rate	(4.50%)	(3.30%)	(0.70%)
Change in valuation allowance	1.20%	0.50%	0.00%
R&D additional deduction	(2.60%)	0.00%	0.00%
Others	2.30%	2.40%	0.90%
Effective income tax rate	17.90%	13.10%	25.90%
US [Member]
Increase (decrease) in effective income tax rate resulting from:
Tax rate differential on entities not subject to PRC income tax			(0.20%)
HK [Member]
Increase (decrease) in effective income tax rate resulting from:
Tax rate differential on entities not subject to PRC income tax			0.10%
BVI [Member]
Increase (decrease) in effective income tax rate resulting from:
Tax rate differential on entities not subject to PRC income tax	4.60%	2.90%
UAE [Member]
Increase (decrease) in effective income tax rate resulting from:
Tax rate differential on entities not subject to PRC income tax	(8.50%)	(15.00%)

Income Taxes (Schedule of Defer

Income Taxes (Schedule of Deferred Income Tax Assets and Liabilities) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred income tax assets:
Tax loss carry forwards	$ 1,941,124	$ 727,711
Less: valuation allowance	$ (1,941,124)	$ (727,711)	$ (73,182)	$ (556,677)
Deferred income tax assets, net
Deferred income tax liabilities:
Net assets of Research Institute granted to Research Center		$ 1,185,638
Forward contract		(604)
Property, plant and equipment	$ 13,874,224	15,766,517
Total deferred income tax liabilities (included in other non-current liabilities)	$ 13,874,224	$ 16,951,551

Income Taxes (Schedule of Def82

Income Taxes (Schedule of Deferred Tax Asset Valuation Allowance) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Balance at the beginning of the year	$ 727,711	$ 73,182	$ 556,677
Expiration due to liquidation	(68,070)		(437,762)
Additions of valuation allowance	1,333,527	$ 662,151	72,305
Reduction of valuation allowance	(52,044)	(7,622)	(118,038)
Balance at the end of the year	$ 1,941,124	$ 727,711	$ 73,182

Income Taxes (Schedule of Unrec

Income Taxes (Schedule of Unrecognized Tax Benefits) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Balance at beginning of year	$ 14,609,258	$ 8,807,490
Increase related to current year tax positions	7,051,049	5,801,768	$ 8,807,490
Balance at end of year	21,660,307	14,609,258	8,807,490
Unrecognized tax benefits if recognized, would affect the effective tax rate	18,370,729	12,544,088	$ 6,690,841
Unrecognized tax benefits, interest expenses during period	1,905,191	1,322,135
Unrecognized tax benefits, interest and penalty expenses accrued	3,095,819	1,322,135
Income taxes payable	21,076,874	$ 14,025,825
Reduction of the deferred income tax assets for tax loss carry forwards	$ 583,433

Deferred Income (Details)

Deferred Income (Details) ¥ in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2015USD ($)	Jan. 31, 2015CNY (¥)	Dec. 31, 2015USD ($)	Dec. 31, 2015CNY (¥)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Deferred Revenue Arrangement [Line Items]
Government grant related to construction in the form of repayment of bank loan on behalf of the Company by the government			$ 38,118,231
Government grant related to the construction of Sichuan plant in the form of restricted cash			11,117,817
Fund Support Agreement With Shunqing Government
Deferred Revenue Arrangement [Line Items]
Government grant, agreement amount	$ 53,800,000	¥ 350
Government grant related to construction in the form of repayment of bank loan on behalf of the Company by the government			43,000,000	¥ 280
Government grant related to the construction of Sichuan plant in the form of restricted cash			10,800,000	70
Government grant related to the construction of Sichuan plant			5,000,000	32.4
Government grant related to the development of additive manufacturing industry			1,000,000	6.4
Government grant received in form of interest subsidy for strategic emerging industry development			3,400,000	22
Government grant received in form of interest subsidy recognized as other income			$ 1,100,000	¥ 7.2

Other non-current liabilities85

Other non-current liabilities (Details) - USD ($)		Dec. 31, 2015	Dec. 31, 2014
Other non-current liabilities [Abstract]
Income tax payable-noncurrent	[1]	$ 24,172,693	$ 14,025,825
Deferred income tax liabilities (note 12)		13,874,224	16,951,551
Total other non-current liabilities		$ 38,046,917	$ 30,977,376
[1]	Income tax payable-noncurrent represents the accumulative balance of unrecognized tax benefits and related accrued interest.

Common Stock (Details)

Common Stock (Details) - $ / shares	Dec. 31, 2015	Dec. 31, 2014	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	$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock, shares authorized			50,000,000
Preferred stock, par value			$ 0.0001

Preferred Stock (Details)

Preferred Stock (Details) $ / shares in Units, ¥ in Millions	1 Months Ended			12 Months Ended
	Sep. 30, 2011USD ($)shares	Aug. 31, 2011USD ($)$ / sharesshares	Dec. 31, 2008shares	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2013CNY (¥)	Dec. 31, 2012CNY (¥)shares	Dec. 31, 2011$ / shares	Dec. 31, 2011CNY (¥)	Dec. 31, 2014$ / shares	Aug. 15, 2011$ / shares	Mar. 12, 2009$ / shares
Class of Stock [Line Items]
Preferred stock, par value											$ 0.0001
Redemption Price per share				$ 11.53					$ 10.03
Stockholders' Agreement [Member]
Class of Stock [Line Items]
Preferred stock, par value				$ 0.0001
Minimum 'Actual Profit' needed during period to convert preferred stock to common shares | ¥					¥ 800	¥ 520		¥ 360
Number of shares of common stock held as collateral under pledge agreement | shares				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
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Stock issued, shares | shares			1,000,000
Percentage of voting power held by company on a fully diluted basis				40.00%
Preferred stock per share liquidation preference				$ 1
Redeemable Series D convertible preferred stock [Member]
Class of Stock [Line Items]
Stock issued, shares | shares	16,000,000	16,000,000
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										$ 0.0001
Conversion price per share for preferred stock							$ 6.25
Minimum 'Actual Profit' needed during period to convert preferred stock to common shares | ¥					800	¥ 520		360
The minimum number of preferred shares, that if outstanding, will give holders veto rights over certain material corporate actions of the Company | shares						1,600,000
The minimum 'Actual Profit' for the financial year threshold that must be maintained in order to prevent triggering event | ¥					¥ 608	¥ 468		¥ 360

Warrants (Narrative) (Details)

Warrants (Narrative) (Details) - USD ($)	Dec. 01, 2014	Apr. 03, 2014	Oct. 04, 2010	Dec. 01, 2009	Oct. 31, 2010	Dec. 31, 2014	Dec. 31, 2015
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding							0
Proceeds from exercises of warrants		$ 596,740
Warrant term				5 years
Series A Investors Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding				1,320,696
Exercise Price			$ 4.90	$ 5.50
Warrant term				5 years
Warrant expirations	295,878
Series A Investors Warrants [Member] | Minimum [Member]
Class of Warrant or Right [Line Items]
Exercise date			Oct. 4, 2010	Dec. 1, 2009
Series A Investors Warrants [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Exercise date			Dec. 1, 2014	Dec. 1, 2014
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				$ 5.50
Warrant term				5 years
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					Apr. 8, 2011
Series C Investor Warrants [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Exercise date					Oct. 14, 2011
Series C Placement Agents Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Warrants Outstanding			166,667
Exercise Price			$ 7.50
Series C Placement Agents Warrants [Member] | Minimum [Member]
Class of Warrant or Right [Line Items]
Exercise date					Oct. 4, 2010
Series C Placement Agents Warrants [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Exercise date					Jul. 6, 2013

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 ($)

Oct. 10, 2015

Aug. 07, 2015

Aug. 31, 2014

Aug. 31, 2013

May. 31, 2013

Aug. 31, 2012

Oct. 31, 2011

Aug. 31, 2010

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Aug. 07, 2014

Aug. 07, 2013

Aug. 06, 2013

May. 08, 2013

Dec. 31, 2012

Aug. 07, 2012

Oct. 24, 2011

Feb. 07, 2011

Aug. 07, 2010

May. 26, 2009

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

$ 754,547

$ 3,090,766

$ 1,499,941

Granted

72,000

Exercise Price

$ 0.24

$ 8.01

Nonvested Shares [Member]

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

Number of shares to vest

561,237

80,000

26,361

26,405

19,856

Vesting date

Nov. 8, 2013

Apr. 24, 2012

Feb. 7, 2011

Unrecognized compensation cost

$ 1,903,077

Unrecognized compensation cost, recognition period

1 year 7 months 24 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

$ 813,699

$ 1,003,040

$ 3,630,565

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

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

Nonvested shares granted

192,300

Number of shares to vest

282,460

192,370

230,000

Vesting date

Aug. 7, 2018

Aug. 7, 2017

Aug. 7, 2016

Aug. 6, 2015

Aug. 6, 2013

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

Feb. 7, 2014

Feb. 7, 2013

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

Aug. 7, 2012

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

Feb. 7, 2015

Nonvested Shares [Member] | Three independent directors [Member]

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

Nonvested shares granted

10,907

Vesting date

Feb. 7, 2016

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

$ 230,463

$ 127,215

Stock Options [Member] | Six consultants [Member]

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

Nonvested shares granted

72,000

Vesting date

Feb. 1, 2016

Exercise Price

$ 0.24

Vesting period

3 months

Stock Options [Member] | Three Consultants [Member]

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

Stock based compensation expense

$ 0

Granted

450,000

Exercise Price

$ 0.24

Vesting period

6 months

Stock based compensation (Summa

Stock based compensation (Summary of Nonvested Shares Activity) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Aug. 06, 2013	May. 08, 2013	Oct. 24, 2011	Feb. 07, 2011
Weighted Average Grant Date Fair Value Per Share
Granted	$ 0.24
Nonvested Shares [Member]
Number of Nonvested Shares
Balance	647,288	1,090,575	513,000
Granted	203,207	291,948	892,936
Vested	(171,488)	(674,205)	(311,361)
Forfeited	(64,280)	(61,030)	(4,000)
Outstanding	614,727	647,288	1,090,575
Expected to vest as of December 31, 2015	561,237			80,000	26,361	26,405	19,856
Weighted Average Grant Date Fair Value Per Share
Balance	$ 5	$ 4.89	$ 4.66
Granted	6	5.13	4.52
Vested	4.40	4.58	4.74
Forfeited	4.65	4.47	4.37
Outstanding	5.54	$ 5	$ 4.89
Expected to vest as of December 31, 2015	$ 5.54

Stock based compensation (Sum92

Stock based compensation (Summary of Stock Options Activity) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Number of Options Outstanding
Outstanding, beginning			148,500
Granted	72,000
Expired			(148,500)
Outstanding, ending	72,000
Weighted Average Exercise Price
Outstanding, beginning			$ 8.01
Granted	$ 0.24
Expired			$ 8.01
Outstanding, ending	$ 0.24

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, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Numerator:
Net income	$ 26,800,000	$ 6,000,000	$ 25,500,000	$ 25,400,000	$ 35,700,000	$ 43,200,000	$ 19,800,000	$ 22,000,000	$ 83,732,279	$ 120,776,369	$ 133,838,845
Net income for basic and diluted earnings per share									$ 62,611,308	$ 90,197,253	$ 99,261,885
Denominator:
Denominator for basic earnings per share									49,225,566	48,833,434	47,794,028
Dilutive effect of outstanding share options									3,894
Denominator for diluted earnings per share									49,229,460	48,833,434	47,794,028
Earnings per common share:
Basic and diluted earnings per common share	$ 0.41	$ 0.09	$ 0.39	$ 0.39					$ 1.27	$ 1.85	$ 2.08
Convertible Preferred Stock Series D [Member]
Numerator:
Less: earnings allocated to participating									$ (20,350,826)	$ (29,552,623)	$ (33,229,887)
Nonvested Shares [Member]
Numerator:
Less: earnings allocated to participating									$ (770,145)	$ (1,026,493)	$ (1,347,073)

Earnings per share (Summary of

Earnings per share (Summary of Potentially Dilutive Securities) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
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
Series A Placement Agents Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares issuable upon exercise			117,261

Statutory reserves (Details)

Statutory reserves (Details)	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2015CNY (¥)	Dec. 31, 2014CNY (¥)	Dec. 31, 2013CNY (¥)	Dec. 31, 2015CNY (¥)
Statutory reserves [Abstract]
Appropriations to reserve fund	$ 7,651,365	¥ 48,174,525	¥ 37,156,541	¥ 30,075,331
Accumulated statutory surplus reserve	$ 22,575,538		¥ 91,830,755	¥ 54,674,214	¥ 140,005,280

Commitments and contingencies96

Commitments and contingencies (Narrative) (Details) ¥ in Millions, AED in Millions, $ in Millions	1 Months Ended				12 Months Ended
	Apr. 30, 2015USD ($)	Apr. 30, 2015AED	Jan. 31, 2015USD ($)	Mar. 31, 2013CNY (¥)	Dec. 31, 2015USD ($)	Dec. 31, 2015CNY (¥)	Dec. 31, 2015CNY (¥)
Property, Plant and Equipment [Member]
Long-term Purchase Commitment [Line Items]
Commitments | ¥				¥ 1,800
Working Capital [Member]
Long-term Purchase Commitment [Line Items]
Commitments | ¥				¥ 600
Equipment [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation					$ 2.8		¥ 17.9
Equipment [Member] | Peaceful [Member]
Long-term Purchase Commitment [Line Items]
Commitments			$ 271.2
Purchase Obligation					101.2
Equipment [Member] | Xinda Group [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation					1.4		¥ 8.9
Warehouse Construction Contract [Member]
Long-term Purchase Commitment [Line Items]
Commitments					21.1	¥ 137.2
Warehouse Construction Contract [Member] | Falcon Red Eye Contracting Co LLC [Member]
Long-term Purchase Commitment [Line Items]
Commitments	$ 1.8	AED 6.7
Purchase Obligation					$ 0.9

Commitments and contingencies97

Commitments and contingencies (Schedule of Future Minimum Rental Payments) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and contingencies [Abstract]
2,016	$ 1,469,537
2,017	1,336,389
2,018	885,979
2,019	113,521
2,020	113,521
2021 and thereafter	1,031,145
Operating lease rental expense, plant, equipment and office spaces	$ 1,698,088	$ 1,476,640	$ 1,042,894

Revenues (Details)

Revenues (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Sales Revenue By Product [Line Items]
Sales revenue									$ 999,192,894	$ 1,110,685,692	$ 1,048,801,846
Service revenue											2,014,518
Revenues	$ 272,800,000	$ 239,100,000	$ 265,400,000	$ 221,900,000	$ 307,100,000	$ 315,700,000	$ 264,200,000	$ 223,600,000	$ 999,192,894	$ 1,110,685,692	1,050,816,364
Modified Polyamide 66 (PA66) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									219,082,301	192,374,156	195,471,978
Modified Polyamide 6 (PA6) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									203,485,029	223,122,191	216,210,438
Plastic Alloy [Member]
Sales Revenue By Product [Line Items]
Sales revenue									350,620,202	400,306,257	296,635,139
Modified Polypropylene (PP) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									164,828,880	232,421,229	286,263,653
Modified Acrylonitrile butadiene styrene (ABS) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									40,510,344	36,804,599	32,440,913
Polyoxymethylenes (POM) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									3,481,072	3,606,000	2,835,335
Polyphenylene Oxide (PPO) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									12,984,368	14,830,647	$ 13,570,734
Polylactide (PLA) [Member]
Sales Revenue By Product [Line Items]
Sales revenue									5,661	13,952
Raw materials [Member]
Sales Revenue By Product [Line Items]
Sales revenue									3,373,854	$ 7,206,661	$ 5,373,656
Others [Member]
Sales Revenue By Product [Line Items]
Sales revenue									$ 821,183

Selected Quarterly Financial 99

Selected Quarterly Financial Information (Summary of Quarterly Financial Information) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Selected Quarterly Financial Information [Abstract]
Revenues	$ 272,800,000	$ 239,100,000	$ 265,400,000	$ 221,900,000	$ 307,100,000	$ 315,700,000	$ 264,200,000	$ 223,600,000	$ 999,192,894	$ 1,110,685,692	$ 1,050,816,364
Gross profit	52,000,000	29,300,000	51,500,000	48,600,000	58,100,000	65,400,000	52,300,000	46,600,000	181,381,449	222,457,824	223,396,503
Net income	$ 26,800,000	$ 6,000,000	$ 25,500,000	$ 25,400,000	$ 35,700,000	$ 43,200,000	$ 19,800,000	$ 22,000,000	$ 83,732,279	$ 120,776,369	$ 133,838,845
Earnings per share
Basic and diluted	$ 0.41	$ 0.09	$ 0.39	$ 0.39					$ 1.27	$ 1.85	$ 2.08
Basic					$ 0.54	$ 0.66	$ 0.30	$ 0.34
Diluted					$ 0.54	$ 0.62	$ 0.30	$ 0.34

Geographic Revenue Informati100

Geographic Revenue Information (Summary of Revenues from Geographic Areas) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 272,800,000	$ 239,100,000	$ 265,400,000	$ 221,900,000	$ 307,100,000	$ 315,700,000	$ 264,200,000	$ 223,600,000	$ 999,192,894	$ 1,110,685,692	$ 1,050,816,364
Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									999,200,000	1,110,600,000	1,050,800,000
PRC Excluding HK SAR Macau Sar Taiwan [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									927,600,000	970,500,000	$ 1,050,800,000
ROK [Member] | Geographic Concentration Risk [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 71,600,000	$ 140,100,000