Daqo New Energy (DQ) 20-F 16 Mar 18 2017 FY Annual report (foreign) Financial data

Document And Entity Information

Document And Entity Information	12 Months Ended
	Dec. 31, 2017shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Entity Registrant Name	DAQO NEW ENERGY CORP.
Entity Central Index Key	1,477,641
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Trading Symbol	DQ
Entity Common Stock, Shares Outstanding	270,918,702

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 60,676,605	$ 15,987,478
Restricted cash	11,989,559	15,893,467
Accounts receivable, net of allowance for doubtful accounts of $10,163 and $7,993 as of December 31, 2016 and 2017, respectively	2,971,930	4,836,499
Note receivables	27,285,503	13,025,552
Prepaid expenses and other current assets	8,182,567	8,027,667
Advances to suppliers	2,655,623	1,722,783
Inventories	19,603,324	12,280,700
Amounts due from related parties	8,997,439	1,528,712
Total current assets	142,362,550	73,302,858
Property, plant and equipment, net	579,128,691	557,427,884
Prepaid land use rights, net	25,888,850	24,809,809
Deferred tax assets	714,068	585,944
Cost method investment	687,074	581,581
TOTAL ASSETS	748,781,233	656,708,076
Current liabilities:
Short-term bank borrowings, including current portion of long-term bank borrowings	99,300,118	105,980,320
Accounts payable	22,403,913	18,745,297
Note payables	16,876,869	25,732,489
Advances from customers	16,690,895	7,519,605
Payables for purchases of property, plant and equipment	25,144,073	51,322,901
Accrued expenses and other current liabilities	16,134,408	8,320,041
Amounts due to related parties	6,769,898	26,829,605
Income tax payable	13,191,205	5,300,163
Total current liabilities	216,511,379	249,750,421
Long-term bank borrowings	113,588,232	111,948,913
Deferred government subsidies	24,153,555	23,279,820
Total liabilities	354,253,166	384,979,154
Commitments and contingencies (Note 18)
Ordinary shares;
$0.0001 par value 500,000,000 shares authorized as of December 31, 2016 and 2017; 279,214,103 shares issued as of December 31, 2016 and 2017 and 262,956,278 and 270,918,702 shares outstanding as of December 31, 2016 and 2017, respectively	27,328	26,532
Additional paid in capital	247,076,428	240,111,533
Retained Earnings	133,273,480	40,432,352
Accumulated other comprehensive income (loss)	13,107,187	(8,721,820)
Treasury shares, at cost (4,643,150 shares as of December 31, 2016 and 2017)	(1,748,836)	(1,748,836)
Total shareholders' equity	391,735,587	270,099,761
Non-controlling interest	2,792,480	1,629,161
Total equity	394,528,067	271,728,922
TOTAL LIABILITIES AND EQUITY	$ 748,781,233	$ 656,708,076

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Accounts receivable, allowance for doubtful accounts	$ 7,993	$ 10,163
Ordinary shares, par value	$ 0.0001	$ 0.0001
Ordinary shares, shares authorized	500,000,000	500,000,000
Ordinary shares, shares issued	279,214,103	279,214,103
Ordinary shares, shares outstanding	270,918,702	262,956,278
Treasury Stock, shares	4,643,150	4,643,150

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues
Revenues	$ 352,852,151	$ 229,101,211	$ 182,040,968
Cost of revenues
Total cost of revenues	(209,379,466)	(148,672,693)	(144,491,083)
Gross profit	143,472,685	80,428,518	37,549,885
Operating (expenses) income:
Selling, general and administrative expenses	(17,664,471)	(16,104,057)	(12,603,824)
Research and development expenses	(880,981)	(4,001,438)	(923,664)
Other operating income, net	6,769,704	5,325,336	3,824,881
Long-lived assets impairment	(2,987,668)	(198,689)	(1,622,588)
Total operating expenses	(14,763,416)	(14,978,848)	(11,325,195)
Income from operations	128,709,269	65,449,670	26,224,690
Interest expense	(18,005,329)	(14,568,158)	(13,173,958)
Interest income	487,230	407,996	493,995
Exchange (loss) gain	(3,544)	(7,422)	640,678
Income before income taxes	111,187,626	51,282,086	14,185,405
Income tax expense	(17,332,226)	(7,358,089)	(1,137,821)
Net income	93,855,400	43,923,997	13,047,584
Net income attributable to non-controlling interest	1,014,272	430,241	90,695
Net income attributable to Daqo New Energy Corp. ordinary shareholders	$ 92,841,128	$ 43,493,756	$ 12,956,889
NET EARNINGS PER ORDINARY SHARE
Basic—ordinary shares	$ 0.35	$ 0.17	$ 0.05
Diluted—ordinary shares	$ 0.34	$ 0.16	$ 0.05
ORDINARY SHARES USED IN CALCULATING EARNINGS PER ORDINARY SHARE
Basic—ordinary shares	265,070,961	261,742,244	258,015,851
Diluted—ordinary shares	272,926,319	264,817,755	261,411,933
Products [Member] | Third parties [Member]
Revenues
Revenues	$ 339,409,878	$ 217,907,014	$ 166,942,726
Products [Member] | Related parties [Member]
Revenues
Revenues	13,442,273	10,900,252	9,069,816
Service fees [Member] | Third parties [Member]
Revenues
Revenues			3,203,298
Service fees [Member] | Related parties [Member]
Revenues
Revenues		$ 293,945	$ 2,825,128

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 93,855,400	$ 43,923,997	$ 13,047,584
Other comprehensive income (loss):
Foreign currency translation adjustments	21,978,054	(17,605,240)	(11,286,150)
Total other comprehensive income (loss)	21,978,054	(17,605,240)	(11,286,150)
Comprehensive income	115,833,454	26,318,757	1,761,434
Comprehensive income attributable to non-controlling interest	1,163,319	327,134	61,415
Comprehensive income attributable to Daqo New Energy Corp. shareholders	$ 114,670,135	$ 25,991,623	$ 1,700,019

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)	Total	Ordinary shares [Member]	Treasury Stock [Member]	Additional paid in capital [Member]	Accumulated Loss [Member]	Accumulated other comprehensive income (loss) [Member]	Noncontrolling interest [Member]
Balance at Dec. 31, 2014	$ 206,768,070	$ 22,358	$ (398,672)	$ 203,125,494	$ (16,018,293)	$ 20,037,183
Balance, shares at Dec. 31, 2014		223,577,853
Net income	13,047,584				12,956,889		90,695
Other comprehensive income (loss)	(11,286,150)					(11,256,870)	(29,280)
Share-based compensation	3,687,951			3,687,951
Follow-on equity offering, net of issuance costs of $2,033,041	27,996,959	$ 3,850		27,993,109
Follow-on equity offering, net of issuance costs of $2,033,041,shares		38,500,000
Options exercised	275,783	$ 112		275,671
Options exercised, shares		1,115,625
Repurchase of ordinary shares	(1,350,164)		(1,350,164)
Repurchase of ordinary shares, shares		(2,356,900)
Capital injection from noncontrolling shareholders	2,516,457			1,275,845			1,240,612
Balance at Dec. 31, 2015	241,656,490	$ 26,320	(1,748,836)	236,358,070	(3,061,404)	8,780,313	1,302,027
Balance, shares at Dec. 31, 2015		260,836,578
Net income	43,923,997				43,493,756		430,241
Other comprehensive income (loss)	(17,605,240)					(17,502,133)	(103,107)
Share-based compensation	2,702,089			2,702,089
Options exercised	1,051,586	$ 212		1,051,374
Options exercised, shares		2,119,700
Balance at Dec. 31, 2016	271,728,922	$ 26,532	(1,748,836)	240,111,533	40,432,352	(8,721,820)	1,629,161
Balance, shares at Dec. 31, 2016		262,956,278
Net income	93,855,400				92,841,128		1,014,272
Other comprehensive income (loss)	21,978,054					21,829,007	149,047
Share-based compensation	4,200,273			4,200,273
Options exercised	$ 2,765,418	$ 560		2,764,858
Options exercised, shares	5,596,050	5,596,050
Restricted shares vested		$ 236		(236)
Restricted shares vested, shares		2,366,374
Balance at Dec. 31, 2017	$ 394,528,067	$ 27,328	$ (1,748,836)	$ 247,076,428	$ 133,273,480	$ 13,107,187	$ 2,792,480
Balance, shares at Dec. 31, 2017		270,918,702

CONSOLIDATED STATEMENTS OF CHA7

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2015USD ($)
Follow-on equity offering, issuance costs	$ 2,033,041

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating activities:
Net income	$ 93,855,400	$ 43,923,997	$ 13,047,584
Adjustments to reconcile net income to net cash provided by operating activities:
Long-lived assets impairment	2,987,668	198,689	1,622,588
Share-based compensation	4,200,273	2,702,089	3,687,951
Inventory write-down			62,422
Reversal of allowance for doubtful accounts	(2,750)	(1,053,041)	(2,026,567)
Depreciation of property, plant and equipment	38,824,055	33,822,082	31,361,026
Loss on disposal of Property Plant and Equipment	154,575	181,028	166,283
Deferred tax assets	(85,302)	445	(626,965)
Changes in operating assets and liabilities:
Accounts receivable	2,112,239	14,890,598	(10,399,283)
Notes receivable	(12,884,067)	(2,634,860)	36,898,166
Prepaid expenses and other current assets	898,903	3,415,637	30,465
Advances to suppliers	(786,273)	(761,045)	264,361
Inventories	(6,252,834)	(2,258,281)	(1,622,269)
Amount due from related parties	(6,739,322)	(1,318,195)	5,481,362
Prepaid land use rights	572,722	557,162	595,716
Other non-current assets			161,657
Accounts payable	2,304,987	2,386,015	1,452,811
Notes payable	786,372	(1,403,994)	(14,733,475)
Accrued expenses and other current liabilities	6,983,599	260,879	59,045
Income tax payable	7,253,601	4,420,313	940,732
Advances from customers	8,342,112	(134,155)	(2,051,000)
Amount due to related parties	849,447	1,815,307	2,178,445
Deferred government subsidies	(671,011)	(338,733)	(124,842)
Net cash provided by operating activities	142,704,394	98,671,937	66,426,213
Investing activities:
Purchases of property, plant and equipment	(67,836,778)	(67,477,008)	(81,364,037)
Decrease in restricted cash	4,791,347	1,935,536	2,121,603
Proceeds from disposition of Nanjing Daqo			5,110,085
Purchase of cost method investment	(63,793)	(581,581)
Net cash used in investing activities	(63,109,224)	(66,123,053)	(74,132,349)
Financing activities:
Proceeds from related parties loans	63,172,079	126,400,842	245,957,818
Repayment of related parties loans	(83,754,652)	(148,463,137)	(276,575,346)
Proceeds from bank borrowings	91,989,400	106,986,666	237,031,976
Repayment of bank borrowings	(111,000,000)	(116,255,480)	(220,611,404)
Purchase and retirement of treasury shares			(1,350,164)
Proceeds from options exercised	2,238,854	1,051,586	275,783
Proceeds from follow-on equity offering			30,030,000
Insurance costs for follow-on equity offering			(2,033,041)
Capital injection from non-controlling shareholders			2,516,457
Net cash provided by (used in) financing activities	(37,354,319)	(30,279,523)	15,242,079
Effect of exchange rate changes on cash and cash equivalents	2,448,276	(771,894)	(114,415)
Net increase in cash and cash equivalents	44,689,127	1,497,467	7,421,528
Cash and cash equivalents at the beginning of the year	15,987,478	14,490,011	7,068,483
Cash and cash equivalents at the end of the year	60,676,605	15,987,478	14,490,011
Supplemental disclosure of cash flow information:
Interest paid, net of capitalized interest	18,031,088	14,215,745	13,284,899
Income taxes paid	9,526,485	2,998,658	2,726,825
Supplemental schedule of non-cash investing activities:
Accrued purchases of property, plant and equipment	$ 27,251,832	$ 65,625,603	$ 52,786,103

ORGANIZATION AND PRINCIPAL ACTI

ORGANIZATION AND PRINCIPAL ACTIVITIES	12 Months Ended
	Dec. 31, 2017
ORGANIZATION AND PRINCIPAL ACTIVITIES [Abstract]
ORGANIZATION AND PRINCIPAL ACTIVITIES	1. ORGANIZATION AND PRINCIPAL ACTIVITIES Daqo New Energy Corp. (the “Company”) and its wholly owned subsidiaries, Chongqing Daqo New Energy Co., Ltd. (“Chongqing Daqo”) and Xinjiang Daqo New Energy Co., Ltd. (“Xinjiang Daqo”) are collectively referred to as the Group. The Company was incorporated on November 22, 2007 in the Cayman Islands. Chongqing Daqo and Xinjiang Daqo were incorporated by the Company on January 14, 2008 and February 22, 2011, respectively, in the Peoples’ Republic of China (“PRC”). The Group manufactures and sells polysilicon and wafers through Xinjiang Daqo and Chongqing Daqo. In August 2015, Xinjiang Daqo issued stock representing 1 100 2.5

SUMMARY OF PRINCIPAL ACCOUNTING

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2017
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES [Abstract]
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES	2. SUMMARY OF PRINCIPAL ACCOUNTING POLICIES The consolidated financial statements of the Group have been prepared in accordance with generally accepted accounting principles in the United States ("U.S. GAAP"). As of December 31, 2017, the Group's current liabilities exceed its current assets by $ 74.1 93.9 142.7 Based on the above factors and plans, management believes that adequate sources of liquidity will exist to fund the Group's working capital and capital expenditures requirements, and to meet its short-term debt obligations, other liabilities and commitments as they become due during the twelve month period after the date that the financial statements are issued. The consolidated financial statements include the financial statements of the Group. All intercompany transactions and balances have been eliminated upon consolidation. 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 disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. The Group bases its estimates on historical experience and various other factors believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Management has made significant estimates in a variety of areas, including but not limited to allowance for doubtful accounts, useful lives and residual values of long-lived assets, impairment for long lived assets, valuation allowances for deferred tax assets, interest capitalization and certain assumptions used in the computation of share-based compensation and related forfeiture rates. Financial instruments that potentially expose the Group to concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash, accounts receivable and notes receivable. The Group places its cash and cash equivalents in various financial institutions in the PRC. The Group believes that no significant credit risk exists as these banks are principally government-owned financial institutions with high credit ratings. Accounts receivable represent those receivables derived in the ordinary course of business. The Group conducts credit evaluations of customers to whom credit terms are extended. The Group establishes an allowance for doubtful accounts mainly based on aging of the receivables and other factors surrounding the credit risk of specific customers. Allowance for doubtful accounts is $ 10,163 7,993 The following customers accounted for 10% or more of accounts receivable: Accounts December 31, receivable 2016 2017 Customer A $ 1,368,956 $ 1,286,454 Customer B $ 1,576,400 $ 984,918 Customer C $ 1,294,342 $ 682,264 From time to time, certain accounts receivable balances are settled in the form of notes receivable. As of December 31, 2016 and 2017, notes receivable represents bank acceptance drafts that are non-interest bearing and due within 6~12 months. Cash and cash equivalents consist of cash on hand and demand deposits, which are unrestricted as to withdrawal and use, and which have maturities of three months or less when purchased. Restricted cash of $ 15,893,467 11,989,559 The Group determines its allowance for doubtful accounts by actively monitoring the financial condition of its customers to determine the potential for any nonpayment of trade receivables. In determining its allowance for doubtful accounts, the Group also considers other economic factors, such as aging trends. The Group believes that its process of specific review of customers combined with overall analytical review provides an effective evaluation of ultimate collectability of trade receivables. Provisions for allowance for doubtful accounts are recorded as general and administrate expense in the consolidated statements of operations. Inventories are stated at lower of cost or net realizable value. Costs are determined using weighted average costs. Costs comprise direct materials, direct labor and overhead costs incurred in bringing the inventories to their present location and condition. The Group writes down the cost of excess inventories to the estimated net realizable value based on historical and forecasted demand. Estimated net realizable value is measured as the estimated selling price of each class of inventory in the ordinary course of business less estimated costs of completion and disposal. The charges to inventory for the years ended December 31, 2015, 2016 and 2017 were $ 62,422 Buildings and plants 30 Machinery and equipment 15 Furniture, fixtures and equipment 3 5 Motor vehicles 6 Costs incurred on construction are capitalized and transferred to property, plant and equipment upon completion, at which time depreciation commences. Interest expense incurred for construction of property, plant, and equipment is capitalized as part of the costs of such assets. The Group capitalizes interest to the extent that expenditures to construct an asset have occurred and interest costs have been incurred. Interest expense capitalized for the years ended December 31, 2015, 2016 and 2017 was $ 2,825,879 1,757,547 87,478 (j) Prepaid land use rights All land in the PRC is owned by the PRC government. The PRC government, according to PRC law, may sell the land use rights for a specified period of time. The Group’s land use rights in the PRC are stated at cost less recognized lease expenses. Lease expense is recognized over the term of the agreement on a straight-line basis. The Group recorded lease expenses of $ 595,716 557,162 572,722 The Group evaluates its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. Factors that the Group considers in deciding when to perform an impairment review include, but are not limited to significant under-performance of a business or product line in relation to expectations, significant negative industry or economic trends, and significant changes or planed changes in the use of the assets. An impairment analysis is performed at the lowest level of identifiable independent cash flows for an asset or asset group. The Group makes subjective judgments in determining the independent cash flows that can be related to a specific asset group based on the asset usage model and manufacturing capabilities. The Group measures the recoverability of assets that will continue to be used in the operations by comparing the carrying value of the asset group to the estimate of the related total future undiscounted cash flows. If an asset group’s carrying value is not recoverable through the related undiscounted cash flows, the impairment loss is measured by comparing the difference between the asset group’s carrying value and its fair value. The Group determines the fair value of an asset or asset group utilizing estimated future discounted cash flows and incorporates assumptions that it believes marketplace participants would utilize. During each of the three years ended December 31, 2015, 2016 and 2017, the Group recorded impairment losses of $ 1,622,588 198,689 2,987,668 Product sales The Group recognizes revenue when persuasive evidence of an arrangement exists, the sales price is fixed or determinable, delivery of the product has occurred, title and risk of loss have transferred to the customers and collectability of the receivable is reasonably assured. The majority of the sales contracts transfer title and risk of loss to customers upon receipt. Sales agreements for polysilicon and wafers typically do not contain product warranties except for return and replacement of defective products within a period generally ranging from 3 to 30 days from delivery. Sales agreements typically do not contain post-shipment obligations or other return or credit provisions. Customers frequently pay for products prior to the delivery of the products. Advance payments are recorded as advances from customers. Service revenue The Group also provides OEM services to customers, such as the provision of service to process polysilicon into ingots and wafers. The Group recognizes revenue when there is persuasive evidence of an arrangement, the service has been rendered, the sales price is fixed or determinable and collectability is reasonably assured. Cost of revenues consists of production related costs including costs of silicon raw materials, electricity and other utilities, consumables, direct labor, overhead costs, depreciation of property, plant and equipment, and manufacturing waste treatment processing fees. Cost of revenues does not include shipping and handling expenses, therefore the Group's cost of revenues may not be comparable to other companies which include such expenses in their cost of revenues. Costs to ship products to customers are recorded as selling expenses in the consolidated statements of operations. Costs to ship products to customers were $ 2,708,962 3,147,594 4,385,217 Research and development expenses include materials and utilities consumed in research and development activities, payroll and related costs and depreciation of property and equipment associated with the research and development activities, which are expensed when incurred. The Group's research and development activities are mainly focused on technical improvement to improve the production volume,efficiency and lower unit cost. The Group receives unrestricted cash subsidies from local government agencies. The government agencies, at their discretion, determine the amount of the subsidies with reference to fixed assets and land use right payments, value-added tax and income taxes paid, bank loan interest expenses paid or electricity consumed by the Group; however, these subsidies do not represent tax refunds or reimbursements of expenditures. The subsidies are unrestricted as to use and can be utilized by the Group in any manner it deems appropriate. The Group has utilized, and expects to continue to utilize, these subsidies to fund general operating expenses. The Group records unrestricted cash government subsidies as other operating income in the consolidated statements of operations. Unrestricted cash government subsidies received for the years ended December 31, 2015, 2016 and 2017 were $ 3,578,865 4,742,635 6,668,867 690,889 323,769 Deferred income taxes are recognized for temporary differences between the tax bases of assets and liabilities and their reported amount in the consolidated financial statements, net operating loss carry-forwards and credits by applying enacted tax rates applicable to future years. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. Current income taxes are provided in accordance with the laws of the relevant taxing authorities. Deferred tax assets and liabilities are measured using enacted rates expected to apply to taxable income in which temporary differences are expected to be realized or settled. The effect on deferred tax assets and liabilities of changes in tax rates is recognized in the statement of operations in the period of the enactment of the change. The Group recognizes share-based compensation in the consolidated statements of operations based on the fair value of equity awards on the date of the grant, with compensation expense recognized over the period in which the grantee is required to provide service to the Group in exchange for the equity award. The fair value of share options is determined using the Black-Scholes valuation model and the fair value of restricted share units ("RSUs") is determined with reference to the fair value of the underlying shares on the grant date. The Group has made an estimate of expected forfeiture and is recognizing compensation costs only for those equity awards expected to vest. The share-based compensation expenses have been categorized as either selling, general and administrative expenses or cost of sales, depending on the job functions of the grantees. For the years ended December 31, 2015, 2016 and 2017, the Group recognized share-based compensation expense of $ 3,687,951 2,702,089 4,200,273 Year ended December 31, 2015 2016 2017 Selling, general and administrative expenses $ 3,323,948 $ 2,501,957 $ 3,679,145 Cost of sales 364,003 200,132 521,128 Total $ 3,687,951 $ 2,702,089 $ 4,200,273 Basic earnings per ordinary share are computed by dividing the net income attributable to ordinary shares by the weighted average number of ordinary shares outstanding during the year. Diluted earnings per share is calculated by dividing net income attributable to ordinary shareholders as adjusted for the effect of dilutive ordinary equivalent shares, if any, by the weighted average number of ordinary shares and dilutive ordinary share equivalents outstanding during the year. Diluted earnings per share is computed using the treasury stock method. (t) Foreign currency translation The reporting currency of the Group is the United States dollar (“U.S. dollar”). The functional currency of the Group is the U.S. dollar. Monetary assets and liabilities denominated in other currencies other than the U.S. dollar are translated into U.S. dollar at the rates of exchange in effect at the balance sheet dates. Transactions dominated in currencies other than the U.S. dollar during the year are converted into U.S. dollar at the applicable rates of exchange prevailing when the transactions occur. Transaction gains and losses are recorded in the statements of operations. The financial records of the Group’s PRC subsidiaries are maintained in Chinese Renminbi (“RMB”), which is their functional currency. Assets and liabilities are translated at the exchange rates at the balance sheet date. Equity accounts are translated at historical exchange rates. Revenues, expenses, gains and losses are translated at average rate of exchange prevailing during the periods presented. Translation adjustments are reported as cumulative translation adjustments and are shown as a separate component of other comprehensive income in the statement of changes in equity and comprehensive income. The RMB is not a freely convertible currency. The State Administration for Foreign Exchange of People’s Republic of China, under the authority of the People’s Bank of China, controls the conversion of RMB into foreign currencies. The value of the RMB is subject to changes in central government policies and to international economic and political developments affecting supply and demand in the China foreign exchange trading system market. The Group’s aggregate amount of cash and cash equivalents and restricted cash denominated in RMB amounted to $ 28,839,371 66,433,887 Comprehensive income is the change in equity during a period from transactions and other events and circumstances from non-shareholder sources and included net income and foreign currency translation adjustments. As of December 31, 2015, 2016 and 2017, accumulated other comprehensive income (loss) was comprised entirely of foreign currency translation adjustments. The Group estimates fair value of financial assets and liabilities as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (also referred to as an exit price). The fair value measurement guidance establishes a hierarchy for inputs used in measuring fair value that gives the highest priority to observable inputs and the lowest priority to unobservable inputs. Valuation techniques used to measure fair value shall maximize the use of observable inputs. ⋅ Level 1—Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured. ⋅ Level 2—Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs and significant value drivers are observable in active markets are Level 2 valuation techniques. ⋅ Level 3—Valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are valuation technique inputs that reflect the Group’s own assumptions about the assumptions that market participants would use to price an asset or liability. When available, the Group measures the fair value of financial instruments based on quoted market prices in active markets, valuation techniques that use observable market-based inputs or unobservable inputs that are corroborated by market data. Pricing information the Group obtains from third parties is internally validated for reasonableness prior to use in the consolidated financial statements. When observable market prices are not readily available, the Group generally estimates fair value using valuation techniques that rely on alternate market data or inputs that are generally less readily observable from objective sources and are estimated based on pertinent information available at the time of the applicable reporting periods. In certain cases, fair values are not subject to precise quantification or verification and may fluctuate as economic and market factors vary and the Group’s evaluation of those factors changes. Although the Group uses its best judgment in estimating the fair value of these financial instruments, there are inherent limitations in any estimation technique. In these cases, a minor change in an assumption could result in a significant change in its estimate of fair value, thereby increasing or decreasing the amounts of the Group’s consolidated assets, liabilities, shareholders’ equity and net income or loss. The Group’s financial instruments include cash and cash equivalents, restricted cash, accounts receivable, note receivables other current assets, amount due from related parties, accounts payable, other current liabilities, payables for purchase of property, plant and equipment, amounts due to related parties and short-term and current portion of long-term bank borrowings. The carrying amounts of these short-term financial instruments approximate their fair values due to the short-term maturity of these instruments. The Group’s long-term bank borrowing consists of floating rate loans. The fair value of long-term borrowings is measured using discounted cash flow technique based on current rates for comparable loans on the respective valuation date and it therefore considered a level 2 measurement. The long-term bank borrowings approximate their fair values because market interest rates have not fluctuated significantly since the commencement of loan contracts signed. The Group classified the ownership interest in the consolidated entity held by a party other than the Group to non-controlling interest in the consolidated financial statements. It also reported the consolidated net income at amounts that include the amounts attributable to both the parent and the non-controlling interest on the face of the Consolidated Statements of Operations. Xinjiang Daqo Investment's equity interests in Xinjiang Daqo are presented as a non-controlling interest. The non-controlling interest was $ 1,629,161 2,792,480 On July 9, 2012, the Company's Board of Directors authorized the Company to repurchase up to $ 5 2,356,900 1,350,164 On February 17, 2016, Xinjiang Daqo entered into an agreement to invest in Syned Fire Safety Service Co., Ltd. ("Syned Fire Safety Services"), a company engaging in fire safety activities. Pursuant to the agreement, Xinjiang Daqo contributed a capital investment of $ 581,581 15.29 63,793 The Group reviews its investment in Syed Fire Safety Service to determine whether a decline in fair value below the carrying value, if any, is other-than-temporary. No impairment loss occurred during the years ended December 31, 2016 and 2017. Although assumptions used in estimates of fair value of the investment in Syed Fire Safety Service are management best estimates, such assumptions are, by nature, highly judgmental and may vary significantly from actual results. (z) Adoption of New Accounting Pronouncement In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory (Topic 330), which applies to inventory that is measured using first-in, first-out ("FIFO") or average cost. Under the updated guidance, an entity should measure inventory that is within scope at the lower of cost and net realizable value, which is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Subsequent measurement is unchanged for inventory that is measured using last-in, last-out ("LIFO"). This ASU is effective for annual and interim periods beginning after December 15, 2016, and should be applied prospectively with early adoption permitted at the beginning of an interim or annual reporting period. The Group adopted the ASU for the year ended December 31, 2017 and has already considered the impact on its consolidated financial statements and related disclosures and the effects upon adoption are not material. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which amends ASC Topic 718, Compensation – Stock Compensation. The objective of this amendment is part of the FASB’s Simplification Initiative as it applies to several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The effective date of the amendment is for fiscal years beginning after December 31, 2016 and interim periods within that reporting period. The Group adopted the ASU for the year ended December 31, 2017 and has already considered the impact on its consolidated financial statements and related disclosures and the effects upon adoption are not material. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The core principle of the model is to recognize revenue when control of the goods or services transfers to the customer. The new disclosure requirements will provide information about the nature, amount, timing and uncertainty of revenue and cash flows from revenue contracts with customers. The guidance is effective for annual and interim reporting periods beginning after December 15, 2017. Entities have the option of using either a full retrospective or modified retrospective approach to adopting this guidance. We anticipate to implement this standard effective January 1, 2018 on a full retrospective basis. We have substantially completed our assessment of all revenue from existing contracts with customers. Our product sales consist of a single performance obligation that is satisfied at a point in time. Product revenue is recognized upon delivery, which is consistent with the previous revenue recognition guidance. Therefore, we do not anticipate that there will be a significant impact to our revenue recognition practices, internal controls, financial positions, results of operations or cash flows. The new standard will require us to provide more robust disclosures than required by previous guidance, including disclosures related to disaggregation of revenue into appropriate categories, performance obligations, and the judgments made in revenue recognition determinations. In January 2016, the FASB issued ASU2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities, which requires that most equity investments be measured at fair value, with subsequent changes in fair value recognized in net income. The ASU also impacts financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. In addition, the FASB clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. Entities will have to assess the realizability of such deferred tax assets in combination with the entities other deferred tax assets. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017 and for interim periods within that reporting period. The Group has evaluated the impact on its consolidated financial statements upon adoption and the effect is not material. In February 2016, the FASB issued ASU2016-02, Leases. This ASU requires lessees to recognize right-of-use assets and liabilities for operating leases, initially measured at the present value of the lease payments, on the balance sheet. In addition, it requires lessees to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term, generally on a straight-line basis. The definition of a lease has been revised in regards to when an arrangement conveys the right to control the use of the identified asset under the arrangement which may result in changes to the classification of an arrangement as a lease. The ASU expands the disclosure requirements of lease arrangements. This ASU will become effective for the Group in the first quarter of fiscal year 2019, and requires adoption using a modified retrospective approach. The Group is in the process of evaluating the impact on its consolidated financial statements, as well as the impact of adoption on policies, practices and systems. As of December 31, 2017, the Group has $ 1.0 In June 2016, the FASB issued ASU 2016-13, Credit Losses, Measurement of Credit Losses on Financial Instruments. This ASU significantly changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The standard will replace today’s incurred loss approach with an expected loss model for instruments measured at amortized cost. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. This ASU is effective for public entities for annual and interim periods beginning after December 15, 2019. Early adoption is permitted for all entities for annual periods beginning after December 15, 2018, and interim periods therein. The Group is in the process of evaluating the impact on its consolidated financial statements upon adoption. In August 2016, the FASB issued ASU 2016-15 which amends the guidance on the classification of certain cash receipts and payments in the statement of cash flows. This ASU is effective for annual and interim reporting periods beginning after December 15, 2017 and is applied retrospectively. Early adoption is permitted including adoption in an interim period. The Group will adopt this ASU on its effective date of January 1, 2018 and is in the process of evaluating the impact on its consolidated financial statements upon adoption. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows, Restricted Cash, which clarifies guidance on the classification and presentation of restricted cash in the statement of cash flows. ASU 2016-18 becomes effective for the Group on January 1, 2018. The adoption of this accounting pronouncement will impact the presentation of restricted cash in the Group’s Consolidated Statements of Cash Flows. The new guidance permits early adoption. The Group is in the process of evaluating the impact on its consolidated financial statements upon adoption. In May 2017, the FASB issued ASU 2017-09, Compensation — Stock Compensation (Topic 718): Scope of Modification Accounting, which amends the scope of modification accounting for share-based payment arrangements. The ASU provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. The ASU is effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The Group is in the process of evaluating the impact on its consolidated financial statements upon adoption.

EXIT and DISPOSAL ACTIVITIES

EXIT and DISPOSAL ACTIVITIES	12 Months Ended
	Dec. 31, 2017
EXIT and DISPOSAL ACTIVITIES [Abstract]
EXIT and DISPOSAL ACTIVITIES	3. EXIT and DISPOSAL ACTIVITIES Relocation of Polysilicon Operations to Xinjiang Starting 2013, the Group commenced a plan to expand the capacity at the Xinjiang plant and relocate significant production assets, with a carrying value of $ 144.7 In August 2014, the Board of Directors approved the Group to launch an early stage research for the Polysilicon Phase III Expansion Project in Xinjiang. After a comprehensive analysis of the capacity and comparability of the Chongqing machinery and equipment, the Group concluded that it would be more efficient to use part of the machinery and equipment in Phrase III, rather than using all of them in Phrase II Expansion Project. As a result, the Group has changed its original relocation plan and determined to utilize a portion of these machinery and equipment in Polysilicon Phase III Expansion Project in Xinjiang. As originally planned, the Group has fully ramped up its Polysilicon Phase II Expansion Project since August 2015.The capacity of Xinjiang Daqo is increased from 6,150MT to 12,150MT. Additionally, in January 2015, the Board of Directors approved the first stage of Phase III Expansion Project. In November 2015, the Group together with a professional transport company reviewed all the remaining assets for the relocation preparation under the Phase III Expansion Project. Along with the complicated and comprehensive relocation preparation, the Group identified assets of $ 1.6 1.6 1.1 7.0 0.3 0.2 0.1 0.1 During the year ended December 31, 2016, the Group relocated additional machinery and equipment of $ 34.1 0.2 0.2 2.6 In the year ended December 31, 2017, the Group relocated machinery and equipment of $ 0.2 3.0 2,987,668 11.7 0.2

FOLLOW-ON EQUITY OFFERINGS

FOLLOW-ON EQUITY OFFERINGS	12 Months Ended
	Dec. 31, 2017
FOLLOW-ON EQUITY OFFERING [Abstract]
FOLLOW-ON EQUITY OFFERINGS	4. FOLLOW-ON EQUITY OFFERINGS In February 2015, the Company issued 1,540,000 38,500,000 2.0 28.0

ALLOWANCE FOR DOUBTFUL ACCOUNTS

ALLOWANCE FOR DOUBTFUL ACCOUNTS	12 Months Ended
	Dec. 31, 2017
ALLOWANCES FOR DOUBTFUL RECEIVABLES [Abstract]
ALLOWANCES FOR DOUBTFUL RECEIVABLES	5. ALLOWANCE FOR DOUBTFUL ACCOUNTS Along with the recovery of solar industry and continued legal actions, the Group was able to collect payments on its doubtful accounts, as such, allowance of $ 2,026,567 1,053,041 2,750 Year ended December 31, 2015 2016 2017 Beginning of the year $ 3,189,110 $ 1,087,465 $ 10,163 Reversal during the year (2,026,567) (1,053,041) (2,750) Foreign exchange effect (75,078) (24,261) 580 Closing balance $ 1,087,465 $ 10,163 $ 7,993

PREPAID EXPENSE AND OTHER CURRE

PREPAID EXPENSE AND OTHER CURRENT ASSETS	12 Months Ended
	Dec. 31, 2017
PREPAID EXPENSE AND OTHER CURRENT ASSETS [Abstract]
PREPAID EXPENSE AND OTHER CURRENT ASSETS	6. PREPAID EXPENSE AND OTHER CURRENT ASSETS December 31, 2016 2017 Spare parts $ 5,732,914 $ 6,308,655 Prepaid value added tax (“VAT”) 1,808,141 627,463 Prepaid insurance fee 259,650 333,425 Others 226,962 913,024 Total $ 8,027,667 $ 8,182,567

INVENTORIES

INVENTORIES	12 Months Ended
	Dec. 31, 2017
INVENTORIES [Abstract]
INVENTORIES	7. INVENTORIES December 31, 2016 2017 Raw materials $ 2,947,296 $ 6,087,516 Work-in-process 4,878,905 7,693,833 Finished goods 4,454,499 5,821,975 Total $ 12,280,700 $ 19,603,324 Inventory write-down was $ 62,422

PROPERTY, PLANT AND EQUIPMENT,

PROPERTY, PLANT AND EQUIPMENT, NET	12 Months Ended
	Dec. 31, 2017
PROPERTY, PLANT AND EQUIPMENT, NET [Abstract]
PROPERTY, PLANT AND EQUIPMENT, NET	8. PROPERTY, PLANT AND EQUIPMENT, NET December 31, 2016 2017 Cost Buildings and plant $ 286,302,082 $ 325,775,766 Machinery and equipment 371,703,665 464,556,735 Furniture, fixtures and equipment 21,355,517 26,701,699 Motor vehicles 334,025 356,560 Less: Accumulated depreciation (206,725,215) (260,287,516) Property, plant and equipment, net $ 472,970,074 $ 557,103,244 Construction in process 84,457,810 22,025,447 Total $ 557,427,884 $ 579,128,691 Depreciation expense was $ 31,361,026 33,822,082 38,824,055 Construction in process of $ 22.0 The Group recognized impairments for long-lived assets of $ 1,622,588 198,689 2,987,668

BORROWINGS

BORROWINGS	12 Months Ended
	Dec. 31, 2017
BORROWINGS [Abstract]
BORROWINGS	9. BORROWINGS December 31, 2016 2017 Short-term bank borrowings $ 55,582,070 $ 68,400,950 Long-term bank borrowings, current portion 50,398,250 30,899,168 Total borrowings, current 105,980,320 99,300,118 Long-term bank borrowings, non-current portion 111,948,913 113,588,232 Total $ 217,929,233 $ 212,888,350 Short-term bank borrowings All short-term bank borrowings are guaranteed by Daqo Group and its related parties. The weighted average interest rate on the short-term bank borrowing was 5.4 5.0 5.1 Long-term bank borrowings December 31, 2016 2017 Borrowing from Huaxia Bank — 3,074,200 Borrowing from Bank of China 33,118,850 — Borrowing from Chongqing Rural Commercial Bank 129,228,313 141,413,200 Total $ 162,347,163 $ 144,487,400 On September 30, 2011, Xinjiang Daqo entered into a six-year long term facility agreement with Bank of China. Such borrowing is restricted to the purchase of fixed assets and has a maximum borrowing credit amounted to $ 115.3 5 61.3 115.3 5.39 44.6 70.7 35.4 35.4 35.4 On June 25, 2015, Xinjiang Daqo entered into a six-year long term facility agreement with Chongqing Rural Commercial Bank. Such borrowing is restricted to renovation and extension project of polysilicon and has a maximum borrowing credit amounted to $ 96.1 20 96.1 5.9 13.1 18.4 64.6 On May 30, 2016, Xinjiang Daqo entered into a seven-year long term facility agreement with Chongqing Rural Commercial Bank. Such borrowing is restricted to extension project of polysilicon Phase 3A and has a maximum credit amounted to $ 76.8 20 54.9 5.9 21.9 5.9 On July 19, 2017, Chongqing Daqo entered into a two-year credit facility agreement with Huaxia Bank. Such borrowing is restricted to operating activities and has a maximum credit amount of $ 3.1 16 3.1 5.5 The weighted average interest rate in the years ended December 31, 2015, 2016 and 2017 for the Group’s long-term bank borrowings was 5.7 5.8 5.9 Year ending December 31, Amount 2018 $ 30,899,168 2019 35,972,752 2020 33,820,812 2021 24,598,212 2022 15,375,612 2023 3,820,844 Total $ 144,487,400

ACCRUED EXPENSES AND OTHER CURR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2017
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract]
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	10. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES December 31, 2016 2017 Accrued payroll and welfare $ 3,798,472 $ 5,608,653 Accrued professional fees 374,944 406,887 Other tax payables 1,802,962 5,080,274 Interest payable 390,467 364,708 Others 1,953,196 4,673,886 Total $ 8,320,041 $ 16,134,408

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2017
FAIR VALUE MEASUREMENTS [Abstract]
FAIR VALUE MEASUREMENTS	11. FAIR VALUE MEASUREMENTS Nonrecurring Fair Value Measurements The following table displays assets and liabilities that were measured at fair value on a non-recurring basis after initial recognition: Year ended December 31, 2016 Description Carrying Quoted Prices in Significant Significant Total Losses Property, plant and equipment – cannot be relocated to $ 198,689 $ $ $ — $ 198,689 Year ended December 31, 2017 Description Carrying Quoted Prices in Significant Significant Total Losses Property, plant and equipment – cannot be relocated to $ 2,987,668 $ — $ 2,987,668

MAINLAND CHINA CONTRIBUTION PLA

MAINLAND CHINA CONTRIBUTION PLAN AND PROFIT APPROPRIATION	12 Months Ended
	Dec. 31, 2017
MAINLAND CHINA CONTRIBUTION PLAN AND PROFIT APPROPRIATION [Abstract]
MAINLAND CHINA CONTRIBUTION PLAN AND PROFIT APPROPRIATION	12. MAINLAND CHINA CONTRIBUTION PLAN AND PROFIT APPROPRIATION (a) China Contribution Plan Full time employees of the Group in the PRC participate in a government-mandated, multi-employer, defined contribution plan pursuant to which certain pension benefits, medical care, unemployment insurance, employee housing fund and other welfare benefits are provided to employees. PRC labor regulations require the Group to accrue for these benefits based on a certain percentage of the employees’ salaries. Contributions to defined contribution plans are expensed as incurred. During the years ended December 31, 2015, 2016 and 2017, the Group recognized expenses relating to its contribution to the government sponsored defined contribution plans of $ 4,087,334 3,147,927 3,420,774 (b) Statutory Reserves and Restricted Assets Foreign invested enterprises in PRC are required under PRC laws to distribute its after-tax profits of the current year and draw 10 percent of the profits as the company's statutory common reserve. The company may stop drawing the profits if the aggregate balance of the common reserves has already accounted for over 50 percent of the company's registered capital. The common reserves shall be used for making up losses, expanding the production and business scale or increasing the registered capital of the company. As of December 31, 2015, 2016 and 2017, the Group's aggregate balance of the statutory common reserves was $ 17,720,748 21,969,950 31,991,537 In accordance with relevant PRC laws and regulations, the Group’s PRC subsidiaries are prohibited to make distribution of their registered capital and statutory reserves in the form of cash dividends, loans or advances and the related restricted portion amounted to $ 256,018,805

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2017
INCOME TAXES [Abstract]
INCOME TAXES	13. INCOME TAXES Cayman Islands Tax The Company is incorporated in the Cayman Islands and is not subject to tax in this jurisdiction. PRC Tax The Company’s subsidiaries are registered in the PRC as foreign invested enterprises. Under the Laws of the People’s Republic of China on Enterprise Income Tax (the “EIT Law”) which are effective January 1, 2008, the statutory enterprise income tax rate is 25 Chongqing Daqo is a foreign invested enterprise located in Chongqing. In accordance with a PRC tax regulation which encourages investment in China’s southwest region, Chongqing Daqo is entitled to a preferential tax rate of 15 15 Xinjiang Daqo is a foreign-invested enterprise established on February, 2012 located in Shihezi Economic Development Area in Xinjiang Autonomous Region. On November 25, 2014, Xinjiang Daqo obtained a HNTE certificate and renewed it on August28, 2017, which is valid till 2019. During the years ended December 31, 2015, 2016 and 2017, Xinjiang Daqo was entitled to a preferential tax rate of 15 Under the current EIT Law and implementation regulations issued by the PRC State Council, an income tax rate of 10 Uncertainties exist with respect to how the current income tax law in the PRC applies to the Group’s overall operations, and more specifically, with regard to tax residency status. The EIT Law includes a provision specifying that legal entities organized outside of the PRC will be considered residents for Chinese Income tax purposes if the place of effective management or control is within the PRC. The implementation rules to the EIT Law provide that non-resident legal entities will be considered PRC residents if substantial and overall management and control over the manufacturing and business operations, personnel, accounting and properties, occurs within the PRC. Despite the present uncertainties resulting from the limited PRC tax guidance on the issue, the Group does not believe that the legal entities organized outside of the PRC within the Group should be treated as residents for EIT law purposes. If the PRC tax authorities subsequently determine that the Company and its subsidiaries registered outside the PRC should be deemed resident enterprises, the Company and its subsidiaries registered outside the PRC will be subject to the PRC income taxes, at a statutory income tax rate of 25 According to 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 withholding agent. The statute of limitations will be extended five years under special circumstances, which are not clearly defined (but an underpayment of tax liability exceeding RMB 0.1 Year ended December 31, 2015 2016 2017 Current Tax Expenses $ 1,786,092 $ 7,357,623 $ 17,417,528 Deferred Tax Expenses (Benefit) (648,271) 466 (85,302) Total $ 1,137,821 $ 7,358,089 $ 17,332,226 December 31, 2016 2017 Net operating loss carried forward $ 20,039,534 $ 21,182,813 Allowance for doubtful accounts 1,524 1,998 Government grants related to assets 217,661 211,707 Long-lived assets impairment & depreciation 18,113,967 19,618,474 Others 942,466 1,015,525 Sub-total 39,315,152 42,030,517 Valuation Allowance (38,729,208) (41,316,449) Total $ 585,944 $ 714,068 Year ended December 31, 2015 2016 2017 Beginning balance $ 50,109,751 $ 42,362,849 $ 38,729,208 Reversal (5,708,268) (932,833) (24,771) Foreign exchange effect (2,038,634) (2,700,808) 2,612,012 Ending Balance $ 42,362,849 $ 38,729,208 $ 41,316,449 The Group uses the asset and liability method to record related deferred tax assets and liabilities. The Group considers positive and negative evidences to determine whether some portion or all of the deferred tax assets will be more likely than not realized. This assessment considers, among other matters, the nature, frequency and severity of recent losses and forecasts of future profitability. These assumptions require significant judgement and the forecasts of future taxable income are consistent with the plans and estimates the Group is using to manage the underlying businesses. Valuation allowances are established for deferred tax assets based on a more likely than not threshold. The Group's ability to realize deferred tax assets depends on its ability to generate sufficient taxable income within the carry forward periods provided for in the tax law. The Group has provided a full valuation allowance for the deferred tax assets relating to Chongqing Daqo as of December 31, 2016 and December 31, 2017 in the amount of $ 38,729,208 41,316,449 84.7 Year ended December 31, 2015 2016 2017 PRC Enterprise Income Tax 25 % 25 % 25 % Preferential income tax rate of a subsidiary (8) % (10) % (10) % Additional tax deductions (12) % (1) % (1) % Different tax rate in other jurisdictions 8 % 1 % 2 % Changes in valuation allowance (3) % (1) % — % Tax credits (3) % — % — % Withhold tax 1 % — % — % Effective tax rate 8 % 14 % 16 % Xinjiang Daqo and Chongqing Daqo enjoy the preferential tax rate of 15 1.3 5.2 11.3 0.01 0.02 0.04

SHARE BASED COMPENSATION

SHARE BASED COMPENSATION	12 Months Ended
	Dec. 31, 2017
SHARE BASED COMPENSATION [Abstract]
SHARE BASED COMPENSATION	14. SHARE BASED COMPENSATION In December 2014, The Company’s shareholders adopted the 2014 share incentive plan. The Company’s shareholders have authorized the issuance of up to 21,000,000 During the year ended December 31, 2015, the Company granted 8,134,375 0.59 On January 12, 2015, the Company modified the exercise price to $ 0.87 6,274,166 0.55 0.52 241,557 On September 09, 2015, the Company modified the exercise price for a total number of 12,569,166 0.59 0.38 0.35 0.38 0.37 0.40 282,581 The Company utilized the Binomial option pricing model to evaluate the fair value of the stock options with reference to the closing price of the Company on the measurement dates. Year Ended December 31, 2015 Options Average Exercise Volatility Dividend Post- January 12, 2015 2.82% 1.8-3 times 93.0% 0% 5%-8% July 06, 2015 3.20% 3 times 91.0% 0% 5% September 09, 2015 2.94%-3.08% 1.8-3 times 91.0%-92.0% 0% 5%-8% The risk-free rate of return is based on the yield curve of China USD sovereign bond commensurate with the same maturity at the respective grant dates. The exercise multiple is estimated by reference to the proprietary research and empirical studies. The expected volatility is based on the average of historical daily annualized share price volatility of 6 comparable companies over a normalized period that commensurate with the option life of 10 years. The post-vesting forfeiture rate is based on the historical data and management’s best Estimation. Number of Weighted Weighted Aggregate Options outstanding on January 1, 2017 15,259,141 0.50 Granted — — Forfeited (24,965) 0.59 Expired (3,584) 0.59 Exercised (5,596,050) 0.49 Options outstanding on December 31, 2017 9,634,542 0.50 5.59 18,935,239 Options vested or expected to vest on December 31, 2017 19,017,508 0.46 5.00 38,124,185 Options exercisable on December 31, 2017 8,282,615 0.48 5.34 16,408,217 The share-based compensation expense related to stock options of approximately $ 3,687,951 2,702,089 1,559,863 As of December 31, 2017, there was $ 833,150 1.08 On February 3, 2017, the Company granted restricted share units ("RSUs") to acquire 12,653,992 The weighted average fair value of RSUs granted during the year ended December 31, 2017 was $ 0.98 Number of Weighted Nonvested RSUs on January 1, 2017 — — Granted 12,653,992 0.98 Vested (2,366,374) 0.98 Forfeited (46,875) 0.98 Nonvested RSUs on December 31, 2017 10,240,743 0.98 The share-based compensation expense related to RSUs of approximately $ 2,640,410 As of December 31, 2017, there was $ 9,713,940 3.17

RELATED PARTY TRANSACTIONS AND

RELATED PARTY TRANSACTIONS AND BALANCES	12 Months Ended
	Dec. 31, 2017
RELATED PARTY TRANSACTIONS AND BALANCES [Abstract]
RELATED PARTY TRANSACTIONS AND BALANCES	15. RELATED PARTY TRANSACTIONS AND BALANCES (1) The relationships between the Group and related party are as follows: Name of the related party Relationship Daqo Group Co., Ltd. (“Daqo Group”) Daqo Group and the Group are controlled by same group of shareholders. Zhenjiang Daqo Solar Co. Ltd.(“Zhenjiang Daqo”) An affiliated company which is 100 Daqo Solar Co. Ltd (“Daqo Solar”) An affiliated company which is 100 Nanjing Daqo New Energy Co., Ltd.(“Nanjing Daqo”) An affiliated company which was 100 100 Xinjiang Daqo Investment Co., Ltd. ("Xinjiang Daqo Investment") An affiliated company which is 100 Daqo New Material Co., Ltd. ("Daqo New Material") An affiliated company which is 100 Group, and was consolidated by the Company as VIE on December 31, 2013 Chongqing Daqo Tailai Electric Co., Ltd. (“Chongqing Daqo Tailai”) An affiliated company which is 100 Nanjing Daqo Transformer Systems Co., Ltd. (“Nanjing Daqo Transformer”) An affiliated company which is 100 Jiangsu Daqo Changjiang Electric Co., Ltd. (“Jiangsu Daqo”) An affiliated company which is 100 Nanjing Daqo Electric Co., Ltd. (“Nanjing Daqo Electric”) An affiliated company which is 100 Zhenjiang Klockner-Moeller Electrical Systems Co., Ltd. (“Zhenjiang Moeller”) An affiliated company which is 100 Nanjing Intelligent Apparatus Co., Ltd. (“Intelligent Apparatus”) An affiliated company which is 100 Nanjing Intelligent Software Co., Ltd. (“Intelligent Software”) An affiliated company which is 100 Shanghai Sailfar Electric Technology Co., Ltd. (“Daqo Sailfar”) An affiliated company which is 100 Jiangsu Daquan High Voltage Switchgear Co., Ltd.( “Jiangsu Daquan High Voltage”) An affiliated company which is 75 Jiangsu Daqo Kai-fan Electric Co., Ltd. ( “Jiangsu Daqo Kai-fan”) An affiliated company which is 100 Zhenjiang Electric Equipment Co., Ltd. ( “Zhenjiang Electric”) An affiliated company which is 100 Jiangsu Daqo ETE Electronic Systerm Co., Ltd.(“Jiangsu Daqo ETE Electronic”) An affiliated company which is 75 Jiangsu Daquan Kai-fan Switchgear Co., Ltd (“Jiangsu Daquan Kai-fan Switchgear”) An affiliated company which is 100 Nanjing Yidian Huichuang information technology Co., Ltd (“Nanjing Yidian”) An affiliated company which is 100 (2) Related party balances: The balances due from related parties mainly included the amount due from Zhenjiang Daqo for sales of wafer and polysilicon. The balances are as follows: December 31, 2016 2017 Amounts due from related parties Zhenjiang Daqo $ 1,449,824 $ 8,585,337 Others 78,888 412,102 Total $ 1,528,712 $ 8,997,439 The balances due to related parties mainly included payables to Chongqing Daqo Tailai and Nanjing Daqo Transformer for purchases of machines for polysilicon expansion, and payables to Daqo New Material for rental expenses as of December 31, 2017. December 31, 2016 2017 Amounts due to related parties Daqo Group $ 15,076,133 $ 6,075 Daqo New Material 8,323,271 6,014,190 Xinjiang Daqo Investment 79,197 84,541 Chongqing Daqo Tailai 2,107,488 494,954 Nanjing Daqo Transformer 1,022,075 168,774 Others 221,441 1,364 Total $ 26,829,605 $ 6,769,898 Transaction Year Ended December 31, Name of Related parties Nature 2015 2016 2017 Daqo Group Proceeds from interest free loans 15,043,550 — 2,696,513 Repayment of interest free loans 20,217,257 10,974,807 2,696,513 Repayment of interest bearing loan — 15,059,000 15,495,451 Interest charged — 850,380 440,368 Rental expense — 27,997 37,756 Zhenjiang Daqo Sales 11,111,239 11,194,197 13,442,273 Daqo Solar Sales 783,705 — — Proceeds from interest free loans 127,060,826 60,300,896 40,089,689 Repayment of interest free loans 151,990,672 68,766,506 40,388,195 Nanjing Daqo Proceeds from interest free loans 13,456,861 — — Repayment of interest free loans 13,456,861 — — Xinjiang Daqo Investment Proceeds from interest free loans 72,946,700 56,270,085 14,356,000 Repayment of interest free loans 73,252,506 38,715,449 14,356,000 Daqo New Material Proceeds from interest free loans 11,082,241 9,607,344 6,029,877 Repayment of interest free loans 11,285,114 12,262,592 10,818,493 Purchase-Fixed assets — — 7,390,693 Rental expense 1,050,661 993,894 976,800 Chongqing Daqo Tailai Purchase-Fixed assets 375,528 3,534,248 715,361 Purchase-Raw material 9,938 — — Income from disposal of fixed assets 6,458 — — Proceeds from interest free loans 6,367,640 222,517 — Repayment of interest free loans 6,367,640 2,684,783 — Others subsidiaries under Daqo Group Repayment of interest free loans 5,296 — — Purchase-Fixed assets 3,488,330 2,120,768 80,240 Purchase-Raw material 22,817 129,219 17,651 Total Sales $ 11,894,944 $ 11,194,197 $ 13,442,273 Income from disposal of fixed assets $ 6,458 $ — $ — Purchase-Fixed assets $ 3,863,858 $ 5,655,016 $ 8,186,294 Purchase-Raw material $ 32,755 $ 129,219 $ 17,651 Rental expense $ 1,050,661 $ 1,021,891 $ 1,014,556 Interest expense $ — $ 850,380 440,368 Proceeds from related parties loans $ 245,957,818 $ 126,400,842 $ 63,172,079 Repayment of related parties loans $ 276,575,346 $ 148,463,137 $ 83,754,652

EARNINGS PER SHARE

EARNINGS PER SHARE	12 Months Ended
	Dec. 31, 2017
EARNINGS PER SHARE [Abstract]
EARNINGS PER SHARE	16. EARNINGS PER SHARE The calculation of earnings per share is as follows: Year ended December 31, 2015 2016 2017 Numerator used in basic and diluted earnings per share: Net income attributable to Daqo New Energy Corp. ordinary shareholders—basic and diluted $ 12,956,889 $ 43,493,756 $ 92,841,128 Denominator used in basic and diluted earnings per share: Weighted average number of ordinary shares outstanding used in computing earnings per share-basic 258,015,851 261,742,244 265,070,961 Plus: Dilutive effects of share options 3,396,082 3,075,511 6,020,839 Dilutive effects of RSUs - - 1,834,519 Weighted average number of ordinary shares outstanding used in computing earnings per share—diluted 261,411,933 264,817,755 272,926,319 NET INCOME ATTRIBUTABLE TO DAQO NEW ENERGY CORP. PER ORDINARY SHARE—Basic $ 0.05 $ 0.17 $ 0.35 NET INCOME ATTRIBUTABLE TO DAQO NEW ENERGY CORP. PER ORDINARY SHARE—Diluted $ 0.05 0.16 0.34 Outstanding number of share options totaling of 12,563,541 10,899,141 263,900

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2017
COMMITMENTS AND CONTINGENCIES [Abstract]
COMMITMENTS AND CONTINGENCIES	17. COMMITMENTS AND CONTINGENCIES Capital commitments As of December 31, 2017, commitments outstanding for the purchases of property, plant and equipment approximated $ 39.9 Lease commitments The operating lease commitments as of December 31, 2017 were principally for the housing rental from Daqo New Material and Daqo Group. The lease expense was $ 1,050,661 1,024,970 1,014,556 Year ending December 31 2018 $ 1,058,012 2019 11,925 Total $ 1,069,937

SEGMENT INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2017
SEGMENT INFORMATION [Abstract]
SEGMENT INFORMATION	18. SEGMENT INFORMATION The Group’s chief operating decision maker has been identified as the chief executive officer, who reviews consolidated results when making decisions about allocating resources and assessing performance of the Group. Following the further expansion of module business and entering into the wafer business in 2011, the Group operated and viewed its performance in three segments. However, on September 28, 2012, the module business was disposed. Therefore, only two segments remained in 2015, 2016 and 2017. Furthermore, the Group's chief operating decision maker is not provided with asset information by segment. As such, no asset information by segment is presented. The following tables summarized the Group’s revenue and cost generated from different revenue streams. Substantially all of its revenues are derived in the PRC. The Group’s long lived assets and operations are substantially all located in the PRC. Year ended December 31, 2015 Polysilicon Wafer Elimination Total Revenue – External $ 125,916,457 56,124,511 - 182,040,968 Revenue - Intersegment 23,485,364 - (23,485,364) - Total Revenue 149,401,821 56,124,511 (23,485,364) 182,040,968 Total Cost of revenue 121,193,840 46,763,308 (23,466,065) 144,491,083 Gross Profit $ 28,207,981 9,361,203 (19,299) 37,549,885 Year ended December 31, 2016 Polysilicon Wafer Elimination Total Revenue – External $ 167,530,309 61,570,902 - 229,101,211 Revenue - Intersegment 28,688,793 - (28,688,793) - Total Revenue 196,219,102 61,570,902 (28,688,793) 229,101,211 Total Cost of revenue 125,320,832 52,413,007 (29,061,146) 148,672,693 Gross Profit $ 70,898,270 9,157,895 372,353 80,428,518 Year ended December 31, 2017 Polysilicon Wafer Elimination Total Revenue – External $ 294,073,020 58,779,131 - 352,852,151 Revenue - Intersegment 29,126,674 - (29,126,674) - Total Revenue 323,199,694 58,779,131 (29,126,674) 352,852,151 Total Cost of revenue 181,595,921 55,992,555 (28,209,010) 209,379,466 Gross Profit $ 141,603,773 2,786,576 (917,664) 143,472,685 The following customers individually accounted for 10% or more of revenues: Year ended December 31, 2015 2016 2017 Customer A $ 35,094,472 $ 48,739,001 $ 43,258,204 Customer B * * $ 39,219,089 Customer C $ 18,125,773 * $ 39,099,677 Customer D $ 20,465,558 * * Customer E $ 19,595,911 * * * Represents less than 10% Total sales to the Group’s largest customers whose sales constitute over 10% of revenue accounted for approximately 51 21 34

FINANCIAL STATEMENT SCHEDULE I

FINANCIAL STATEMENT SCHEDULE I	12 Months Ended
	Dec. 31, 2017
FINANCIAL STATEMENT SCHEDULE I [Abstract]
FINANCIAL STATEMENT SCHEDULE I	FINANCIAL STATEMENT SCHEDULE I DAQO NEW ENERGY CORP. FINANCIAL INFORMATION OF PARENT COMPANY BALANCE SHEET DECEMBER 31, 2016 AND 2017 (In U.S. dollars, except share and per share data) December 31, 2016 2017 ASSETS CURRENT ASSETS Cash and cash equivalents $ 2,943,502 $ 4,536,809 Prepaid expenses and other current assets 223,559 700,064 Total current assets 3,167,061 5,236,873 Investments in subsidiaries 267,322,549 386,872,629 TOTAL ASSETS $ 270,489,610 $ 392,109,502 LIABILITIES AND SHAREHOLDERS’ EQUITY CURRENT LIABILITIES Accrued expenses and other current liabilities $ 389,849 $ 373,915 Total current liabilities 389,849 373,915 EQUITY Ordinary shares ($0.0001 par value 500,000,000 shares authorized as of December 31, 2016 and 2017; 279,214,103 and 279,214,103 shares issued as of December 31, 2016 and 2017, respectively and 262,956,278 and 270,918,702 shares outstanding as of December 31, 2016 and 2017, respectively) 26,532 27,328 Additional paid in capital 240,111,533 247,076,428 Retained earnings 40,432,352 133,273,480 Accumulated other comprehensive income (loss) (8,721,820) 13,107,187 Treasury shares (1,748,836) (1,748,836) Total shareholders’ equity 270,099,761 391,735,587 TOTAL LIABILITIES AND EQUITY $ 270,489,610 $ 392,109,502 FINANCIAL STATEMENT SCHEDULE I DAQO NEW ENERGY CORP. FINANCIAL INFORMATION OF PARENT COMPANY STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) FOR THE YEARS ENDED DECEMBER 31, 2015, 2016 AND 2017 (In U.S. dollars) Year ended December 31, 2015 2016 2017 OPERATING EXPENSES General and administrative $ (4,142,634) $ (3,175,482) $ (4,987,820) Total operating expenses (4,142,634) (3,175,482) (4,987,820) LOSS FROM OPERATION (4,142,634) (3,175,482) (4,987,820) Interest income 1,641 - - Exchange gain 118,679 - - Income tax expense (108,992) - - NET LOSS BEFORE SHARE OF RESULTS OF SUBSIDIARIES (4,131,306) (3,175,482) (4,987,820) Equity in earnings of subsidiaries 17,088,195 46,669,238 97,828,948 Net income attributable to Daqo New Energy Corporation ordinary shareholders $ 12,956,889 $ 43,493,756 $ 92,841,128 Other comprehensive (loss) income: Foreign currency translation adjustments (11,256,870) (17,502,133) 21,829,007 Total other comprehensive income (loss): (11,256,870) (17,502,133) 21,829,007 Comprehensive income $ 1,700,019 $ 25,991,623 $ 114,670,135 FINANCIAL STATEMENT SCHEDULE I DAQO NEW ENERGY CORP. FINANCIAL INFORMATION OF PARENT COMPANY STATEMENT OF CHANGES IN EQUITY FOR YEARS ENDED DECEMBER 31, 2015, 2016 AND 2017 (In U.S. dollars, except share and per share data) Ordinary shares Treasury Additional Retained Accumulated Total Number $ Balance at January 1, 2015 223,577,853 22,358 (398,672) 203,125,494 (16,018,293) 20,037,183 206,768,070 Net income 12,956,889 12,956,889 Other comprehensive loss (11,256,870) (11,256,870 Share-based compensation 3,687,951 3,687,951) Option exercised 1,115,625 112 275,671 275,783 Follow-on equity offering, net of issuance costs of $2,033,041 38,500,000 3,850 27,993,109 27,996,959 Repurchase of ordinary shares (2,356,900) (1,350,164) (1,350,164 Capital injection from non-controlling Shareholders 1,275,845 1,275,845 Balance at December 31, 2015 260,836,578 26,320 (1,748,836) 236,358,070 (3,061,404) 8,780,313 240,354,463 Net income 43,493,756 43,493,756) Other comprehensive loss (17,502,133) (17,502,133) Share-based compensation 2,702,089 2,702,089 Option exercises 2,119,700 212 1,051,374 1,051,586 Balance at December 31, 2016 262,956,278 26,532 (1,748,836) 240,111,533 40,432,352 (8,721,820) 270,099,761 Net income 92,841,128 92,841,128 Other comprehensive income 21,829,007 21,829,007 Share-based compensation 4,200,273 4,200,273 Options exercised 5,596,050 560 2,764,858 2,765,418 Restricted shares vested 2,366,374 236 (236) Balance at December 31, 2017 270,918,702 27,328 (1,748,836) 247,076,428 133,273,480 13,107,187 391,735,587 FINANCIAL STATEMENT SCHEDULE I DAQO NEW ENERGY CORP. FINANCIAL INFORMATION OF PARENT COMPANY STATEMENT OF CASH FLOWS FOR THE YEARS ENDED DECEMBER 31, 2015, 2016 AND 2017 (In U.S. dollars) Year ended December 31, 2015 2016 2017 OPERATING ACTIVITIES Net income $ 12,956,889 $ 43,493,756 $ 92,841,128 Equity in earnings of subsidiaries (17,088,195) (46,669,238) (97,828,948) Share-based compensation 3,687,951 2,702,089 4,200,273 Adjustments to reconcile net income to net cash used in operating activities: Prepaid expenses and other current assets 11,099 (29,976) 50,059 Changes in other current liabilities (96,166) (58,806) 91,941 Amount due to a related party (286,526) — — Income tax payable 108,992 (108,992) — Net cash used in operating activities (705,956) (671,167) (645,547) INVESTING ACTIVITIES Capital contributed to subsidiaries (33,256,774) — — Disposition of minority interest in subsidiary 5,110,085 — — Net cash used in investing activities (28,146,689) — — FINANCING ACTIVITIES Repurchase of ordinary shares (1,350,164 — — Proceeds from follow-on equity offering 30,030,000 — — Insurance cost for follow-on equity offering (2,033,041) — — Proceeds from options exercised 275,783 1,051,586 2,238,854 Net cash provided by financing activities 26,922,578 1,051,586 2,238,854 NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (1,930,067) 380,419 1,593,307 CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 4,493,150 2,563,083 2,943,502 CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 2,563,083 $ 2,943,502 $ 4,536,809 FINANCIAL STATEMENT SCHEDULE I DAQO NEW ENERGY CORP. FINANCIAL INFORMATION OF PARENT COMPANY Notes to Financial Information of Parent Company 1. Schedule I has been provided pursuant to the requirements of Rule 12-04(a) and 5-04(c) of Regulation S-X, which require condensed financial information as to the financial position, changes in financial position and results of operations of a parent company as of the same dates and for the same periods for which audited consolidated financial statements have been presented when the restricted net assets of consolidated subsidiaries exceed 25 percent of consolidated net assets as of the end of the most recently completed fiscal year. 2. The condensed financial information of Daqo New Energy Corp has been prepared using the same accounting policies as set out in the accompanying consolidated financial statements except that the equity method has been used to account for investments in its subsidiaries. 3. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The footnote disclosures contain supplemental information relating to the operations of the Company and, as such, these statements should be read in conjunction with the notes to the Consolidated Financial Statements of the Group. No dividend was paid by the Company's subsidiaries to their parent company in 2017. 4. As of December 31, 2017, there were no material contingencies, significant provisions of long-term obligations, and mandatory dividend or redemption requirements of redeemable shares or guarantees of the Company, except for those which have been separately disclosed in the Consolidated Financial Statement, if any.

SUMMARY OF PRINCIPAL ACCOUNTI28

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2017
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES [Abstract]
Basis of presentation	The consolidated financial statements of the Group have been prepared in accordance with generally accepted accounting principles in the United States ("U.S. GAAP"). As of December 31, 2017, the Group's current liabilities exceed its current assets by $ 74.1 93.9 142.7 Based on the above factors and plans, management believes that adequate sources of liquidity will exist to fund the Group's working capital and capital expenditures requirements, and to meet its short-term debt obligations, other liabilities and commitments as they become due during the twelve month period after the date that the financial statements are issued.
Basis of consolidations	(b) Basis of consolidations The consolidated financial statements include the financial statements of the Group. All 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 disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. The Group bases its estimates on historical experience and various other factors believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Management has made significant estimates in a variety of areas, including but not limited to allowance for doubtful accounts, useful lives and residual values of long-lived assets, impairment for long lived assets, valuation allowances for deferred tax assets, interest capitalization and certain assumptions used in the computation of share-based compensation and related forfeiture rates.
Concentration of credit risk	(d) Concentration of credit risk Financial instruments that potentially expose the Group to concentrations of credit risk consist primarily of cash and cash equivalents, restricted cash, accounts receivable and notes receivable. The Group places its cash and cash equivalents in various financial institutions in the PRC. The Group believes that no significant credit risk exists as these banks are principally government-owned financial institutions with high credit ratings. Accounts receivable represent those receivables derived in the ordinary course of business. The Group conducts credit evaluations of customers to whom credit terms are extended. The Group establishes an allowance for doubtful accounts mainly based on aging of the receivables and other factors surrounding the credit risk of specific customers. Allowance for doubtful accounts is $ 10,163 7,993 The following customers accounted for 10% or more of accounts receivable: Accounts December 31, receivable 2016 2017 Customer A $ 1,368,956 $ 1,286,454 Customer B $ 1,576,400 $ 984,918 Customer C $ 1,294,342 $ 682,264 From time to time, certain accounts receivable balances are settled in the form of notes receivable. As of December 31, 2016 and 2017, notes receivable represents bank acceptance drafts that are non-interest bearing and due within 6~12 months.
Cash and cash equivalents	(e) Cash and cash equivalents Cash and cash equivalents consist of cash on hand and demand deposits, which are unrestricted as to withdrawal and use, and which have maturities of three months or less when purchased.
Restricted cash	(f) Restricted cash Restricted cash of $ 15,893,467 11,989,559
Allowance for Doubtful Accounts	(g) Allowance for Doubtful Accounts The Group determines its allowance for doubtful accounts by actively monitoring the financial condition of its customers to determine the potential for any nonpayment of trade receivables. In determining its allowance for doubtful accounts, the Group also considers other economic factors, such as aging trends. The Group believes that its process of specific review of customers combined with overall analytical review provides an effective evaluation of ultimate collectability of trade receivables. Provisions for allowance for doubtful accounts are recorded as general and administrate expense in the consolidated statements of operations.
Inventories	(h) Inventories Inventories are stated at lower of cost or net realizable value. Costs are determined using weighted average costs. Costs comprise direct materials, direct labor and overhead costs incurred in bringing the inventories to their present location and condition. The Group writes down the cost of excess inventories to the estimated net realizable value based on historical and forecasted demand. Estimated net realizable value is measured as the estimated selling price of each class of inventory in the ordinary course of business less estimated costs of completion and disposal. The charges to inventory for the years ended December 31, 2015, 2016 and 2017 were $ 62,422
Property, plant and equipment	Buildings and plants 30 Machinery and equipment 15 Furniture, fixtures and equipment 3 5 Motor vehicles 6 Costs incurred on construction are capitalized and transferred to property, plant and equipment upon completion, at which time depreciation commences. Interest expense incurred for construction of property, plant, and equipment is capitalized as part of the costs of such assets. The Group capitalizes interest to the extent that expenditures to construct an asset have occurred and interest costs have been incurred. Interest expense capitalized for the years ended December 31, 2015, 2016 and 2017 was $ 2,825,879 1,757,547 87,478
Prepaid land use rights	All land in the PRC is owned by the PRC government. The PRC government, according to PRC law, may sell the land use rights for a specified period of time. The Group’s land use rights in the PRC are stated at cost less recognized lease expenses. Lease expense is recognized over the term of the agreement on a straight-line basis. The Group recorded lease expenses of $ 595,716 557,162 572,722
Impairment of long-lived assets	(k) Impairment of long-lived assets The Group evaluates its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. Factors that the Group considers in deciding when to perform an impairment review include, but are not limited to significant under-performance of a business or product line in relation to expectations, significant negative industry or economic trends, and significant changes or planed changes in the use of the assets. An impairment analysis is performed at the lowest level of identifiable independent cash flows for an asset or asset group. The Group makes subjective judgments in determining the independent cash flows that can be related to a specific asset group based on the asset usage model and manufacturing capabilities. The Group measures the recoverability of assets that will continue to be used in the operations by comparing the carrying value of the asset group to the estimate of the related total future undiscounted cash flows. If an asset group’s carrying value is not recoverable through the related undiscounted cash flows, the impairment loss is measured by comparing the difference between the asset group’s carrying value and its fair value. The Group determines the fair value of an asset or asset group utilizing estimated future discounted cash flows and incorporates assumptions that it believes marketplace participants would utilize. During each of the three years ended December 31, 2015, 2016 and 2017, the Group recorded impairment losses of $ 1,622,588 198,689 2,987,668
Revenue recognition	(l) Revenue recognition Product sales The Group recognizes revenue when persuasive evidence of an arrangement exists, the sales price is fixed or determinable, delivery of the product has occurred, title and risk of loss have transferred to the customers and collectability of the receivable is reasonably assured. The majority of the sales contracts transfer title and risk of loss to customers upon receipt. Sales agreements for polysilicon and wafers typically do not contain product warranties except for return and replacement of defective products within a period generally ranging from 3 to 30 days from delivery. Sales agreements typically do not contain post-shipment obligations or other return or credit provisions. Customers frequently pay for products prior to the delivery of the products. Advance payments are recorded as advances from customers. Service revenue The Group also provides OEM services to customers, such as the provision of service to process polysilicon into ingots and wafers. The Group recognizes revenue when there is persuasive evidence of an arrangement, the service has been rendered, the sales price is fixed or determinable and collectability is reasonably assured.
Cost of revenues	(m) Cost of revenues Cost of revenues consists of production related costs including costs of silicon raw materials, electricity and other utilities, consumables, direct labor, overhead costs, depreciation of property, plant and equipment, and manufacturing waste treatment processing fees. Cost of revenues does not include shipping and handling expenses, therefore the Group's cost of revenues may not be comparable to other companies which include such expenses in their cost of revenues.
Shipping and handling	(n) Shipping and handling Costs to ship products to customers are recorded as selling expenses in the consolidated statements of operations. Costs to ship products to customers were $ 2,708,962 3,147,594 4,385,217
Research and development expenses	(o) Research and development expenses Research and development expenses include materials and utilities consumed in research and development activities, payroll and related costs and depreciation of property and equipment associated with the research and development activities, which are expensed when incurred. The Group's research and development activities are mainly focused on technical improvement to improve the production volume,efficiency and lower unit cost.
Government subsidies	(p) Government subsidies The Group receives unrestricted cash subsidies from local government agencies. The government agencies, at their discretion, determine the amount of the subsidies with reference to fixed assets and land use right payments, value-added tax and income taxes paid, bank loan interest expenses paid or electricity consumed by the Group; however, these subsidies do not represent tax refunds or reimbursements of expenditures. The subsidies are unrestricted as to use and can be utilized by the Group in any manner it deems appropriate. The Group has utilized, and expects to continue to utilize, these subsidies to fund general operating expenses. The Group records unrestricted cash government subsidies as other operating income in the consolidated statements of operations. Unrestricted cash government subsidies received for the years ended December 31, 2015, 2016 and 2017 were $ 3,578,865 4,742,635 6,668,867 690,889 323,769
Income taxes	(q) Income taxes Deferred income taxes are recognized for temporary differences between the tax bases of assets and liabilities and their reported amount in the consolidated financial statements, net operating loss carry-forwards and credits by applying enacted tax rates applicable to future years. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. Current income taxes are provided in accordance with the laws of the relevant taxing authorities. Deferred tax assets and liabilities are measured using enacted rates expected to apply to taxable income in which temporary differences are expected to be realized or settled. The effect on deferred tax assets and liabilities of changes in tax rates is recognized in the statement of operations in the period of the enactment of the change.
Share-based compensation	(r) Share-based compensation The Group recognizes share-based compensation in the consolidated statements of operations based on the fair value of equity awards on the date of the grant, with compensation expense recognized over the period in which the grantee is required to provide service to the Group in exchange for the equity award. The fair value of share options is determined using the Black-Scholes valuation model and the fair value of restricted share units ("RSUs") is determined with reference to the fair value of the underlying shares on the grant date. The Group has made an estimate of expected forfeiture and is recognizing compensation costs only for those equity awards expected to vest. The share-based compensation expenses have been categorized as either selling, general and administrative expenses or cost of sales, depending on the job functions of the grantees. For the years ended December 31, 2015, 2016 and 2017, the Group recognized share-based compensation expense of $ 3,687,951 2,702,089 4,200,273 Year ended December 31, 2015 2016 2017 Selling, general and administrative expenses $ 3,323,948 $ 2,501,957 $ 3,679,145 Cost of sales 364,003 200,132 521,128 Total $ 3,687,951 $ 2,702,089 $ 4,200,273
Earnings (loss) per share	(s) Earnings per share Basic earnings per ordinary share are computed by dividing the net income attributable to ordinary shares by the weighted average number of ordinary shares outstanding during the year. Diluted earnings per share is calculated by dividing net income attributable to ordinary shareholders as adjusted for the effect of dilutive ordinary equivalent shares, if any, by the weighted average number of ordinary shares and dilutive ordinary share equivalents outstanding during the year. Diluted earnings per share is computed using the treasury stock method.
Foreign currency translation	(t) Foreign currency translation The reporting currency of the Group is the United States dollar (“U.S. dollar”). The functional currency of the Group is the U.S. dollar. Monetary assets and liabilities denominated in other currencies other than the U.S. dollar are translated into U.S. dollar at the rates of exchange in effect at the balance sheet dates. Transactions dominated in currencies other than the U.S. dollar during the year are converted into U.S. dollar at the applicable rates of exchange prevailing when the transactions occur. Transaction gains and losses are recorded in the statements of operations. The financial records of the Group’s PRC subsidiaries are maintained in Chinese Renminbi (“RMB”), which is their functional currency. Assets and liabilities are translated at the exchange rates at the balance sheet date. Equity accounts are translated at historical exchange rates. Revenues, expenses, gains and losses are translated at average rate of exchange prevailing during the periods presented. Translation adjustments are reported as cumulative translation adjustments and are shown as a separate component of other comprehensive income in the statement of changes in equity and comprehensive income. The RMB is not a freely convertible currency. The State Administration for Foreign Exchange of People’s Republic of China, under the authority of the People’s Bank of China, controls the conversion of RMB into foreign currencies. The value of the RMB is subject to changes in central government policies and to international economic and political developments affecting supply and demand in the China foreign exchange trading system market. The Group’s aggregate amount of cash and cash equivalents and restricted cash denominated in RMB amounted to $ 28,839,371 66,433,887
Comprehensive income	(u) Comprehensive income Comprehensive income is the change in equity during a period from transactions and other events and circumstances from non-shareholder sources and included net income and foreign currency translation adjustments. As of December 31, 2015, 2016 and 2017, accumulated other comprehensive income (loss) was comprised entirely of foreign currency translation adjustments.
Fair value of financial instruments	(v) Fair value of financial instruments The Group estimates fair value of financial assets and liabilities as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (also referred to as an exit price). The fair value measurement guidance establishes a hierarchy for inputs used in measuring fair value that gives the highest priority to observable inputs and the lowest priority to unobservable inputs. Valuation techniques used to measure fair value shall maximize the use of observable inputs. ⋅ Level 1—Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured. ⋅ Level 2—Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs and significant value drivers are observable in active markets are Level 2 valuation techniques. ⋅ Level 3—Valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are valuation technique inputs that reflect the Group’s own assumptions about the assumptions that market participants would use to price an asset or liability. When available, the Group measures the fair value of financial instruments based on quoted market prices in active markets, valuation techniques that use observable market-based inputs or unobservable inputs that are corroborated by market data. Pricing information the Group obtains from third parties is internally validated for reasonableness prior to use in the consolidated financial statements. When observable market prices are not readily available, the Group generally estimates fair value using valuation techniques that rely on alternate market data or inputs that are generally less readily observable from objective sources and are estimated based on pertinent information available at the time of the applicable reporting periods. In certain cases, fair values are not subject to precise quantification or verification and may fluctuate as economic and market factors vary and the Group’s evaluation of those factors changes. Although the Group uses its best judgment in estimating the fair value of these financial instruments, there are inherent limitations in any estimation technique. In these cases, a minor change in an assumption could result in a significant change in its estimate of fair value, thereby increasing or decreasing the amounts of the Group’s consolidated assets, liabilities, shareholders’ equity and net income or loss. The Group’s financial instruments include cash and cash equivalents, restricted cash, accounts receivable, note receivables other current assets, amount due from related parties, accounts payable, other current liabilities, payables for purchase of property, plant and equipment, amounts due to related parties and short-term and current portion of long-term bank borrowings. The carrying amounts of these short-term financial instruments approximate their fair values due to the short-term maturity of these instruments. The Group’s long-term bank borrowing consists of floating rate loans. The fair value of long-term borrowings is measured using discounted cash flow technique based on current rates for comparable loans on the respective valuation date and it therefore considered a level 2 measurement. The long-term bank borrowings approximate their fair values because market interest rates have not fluctuated significantly since the commencement of loan contracts signed.
Noncontrolling interest	(w) Non-controlling interest The Group classified the ownership interest in the consolidated entity held by a party other than the Group to non-controlling interest in the consolidated financial statements. It also reported the consolidated net income at amounts that include the amounts attributable to both the parent and the non-controlling interest on the face of the Consolidated Statements of Operations. Xinjiang Daqo Investment's equity interests in Xinjiang Daqo are presented as a non-controlling interest. The non-controlling interest was $ 1,629,161 2,792,480
Treasury Stock	(x) Treasury Shares On July 9, 2012, the Company's Board of Directors authorized the Company to repurchase up to $ 5 2,356,900 1,350,164
Investment accounted for under cost-method	(y) Cost-method investment On February 17, 2016, Xinjiang Daqo entered into an agreement to invest in Syned Fire Safety Service Co., Ltd. ("Syned Fire Safety Services"), a company engaging in fire safety activities. Pursuant to the agreement, Xinjiang Daqo contributed a capital investment of $ 581,581 15.29 63,793 The Group reviews its investment in Syed Fire Safety Service to determine whether a decline in fair value below the carrying value, if any, is other-than-temporary. No impairment loss occurred during the years ended December 31, 2016 and 2017. Although assumptions used in estimates of fair value of the investment in Syed Fire Safety Service are management best estimates, such assumptions are, by nature, highly judgmental and may vary significantly from actual results.
Adoption of New Accounting Pronouncement	(z) Adoption of New Accounting Pronouncement In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory (Topic 330), which applies to inventory that is measured using first-in, first-out ("FIFO") or average cost. Under the updated guidance, an entity should measure inventory that is within scope at the lower of cost and net realizable value, which is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Subsequent measurement is unchanged for inventory that is measured using last-in, last-out ("LIFO"). This ASU is effective for annual and interim periods beginning after December 15, 2016, and should be applied prospectively with early adoption permitted at the beginning of an interim or annual reporting period. The Group adopted the ASU for the year ended December 31, 2017 and has already considered the impact on its consolidated financial statements and related disclosures and the effects upon adoption are not material. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which amends ASC Topic 718, Compensation – Stock Compensation. The objective of this amendment is part of the FASB’s Simplification Initiative as it applies to several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The effective date of the amendment is for fiscal years beginning after December 31, 2016 and interim periods within that reporting period. The Group adopted the ASU for the year ended December 31, 2017 and has already considered the impact on its consolidated financial statements and related disclosures and the effects upon adoption are not material.
Recent accounting pronouncements	(aa) Recent accounting pronouncements In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The core principle of the model is to recognize revenue when control of the goods or services transfers to the customer. The new disclosure requirements will provide information about the nature, amount, timing and uncertainty of revenue and cash flows from revenue contracts with customers. The guidance is effective for annual and interim reporting periods beginning after December 15, 2017. Entities have the option of using either a full retrospective or modified retrospective approach to adopting this guidance. We anticipate to implement this standard effective January 1, 2018 on a full retrospective basis. We have substantially completed our assessment of all revenue from existing contracts with customers. Our product sales consist of a single performance obligation that is satisfied at a point in time. Product revenue is recognized upon delivery, which is consistent with the previous revenue recognition guidance. Therefore, we do not anticipate that there will be a significant impact to our revenue recognition practices, internal controls, financial positions, results of operations or cash flows. The new standard will require us to provide more robust disclosures than required by previous guidance, including disclosures related to disaggregation of revenue into appropriate categories, performance obligations, and the judgments made in revenue recognition determinations. In January 2016, the FASB issued ASU2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities, which requires that most equity investments be measured at fair value, with subsequent changes in fair value recognized in net income. The ASU also impacts financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. In addition, the FASB clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. Entities will have to assess the realizability of such deferred tax assets in combination with the entities other deferred tax assets. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017 and for interim periods within that reporting period. The Group has evaluated the impact on its consolidated financial statements upon adoption and the effect is not material. In February 2016, the FASB issued ASU2016-02, Leases. This ASU requires lessees to recognize right-of-use assets and liabilities for operating leases, initially measured at the present value of the lease payments, on the balance sheet. In addition, it requires lessees to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term, generally on a straight-line basis. The definition of a lease has been revised in regards to when an arrangement conveys the right to control the use of the identified asset under the arrangement which may result in changes to the classification of an arrangement as a lease. The ASU expands the disclosure requirements of lease arrangements. This ASU will become effective for the Group in the first quarter of fiscal year 2019, and requires adoption using a modified retrospective approach. The Group is in the process of evaluating the impact on its consolidated financial statements, as well as the impact of adoption on policies, practices and systems. As of December 31, 2017, the Group has $ 1.0 In June 2016, the FASB issued ASU 2016-13, Credit Losses, Measurement of Credit Losses on Financial Instruments. This ASU significantly changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The standard will replace today’s incurred loss approach with an expected loss model for instruments measured at amortized cost. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. This ASU is effective for public entities for annual and interim periods beginning after December 15, 2019. Early adoption is permitted for all entities for annual periods beginning after December 15, 2018, and interim periods therein. The Group is in the process of evaluating the impact on its consolidated financial statements upon adoption. In August 2016, the FASB issued ASU 2016-15 which amends the guidance on the classification of certain cash receipts and payments in the statement of cash flows. This ASU is effective for annual and interim reporting periods beginning after December 15, 2017 and is applied retrospectively. Early adoption is permitted including adoption in an interim period. The Group will adopt this ASU on its effective date of January 1, 2018 and is in the process of evaluating the impact on its consolidated financial statements upon adoption. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows, Restricted Cash, which clarifies guidance on the classification and presentation of restricted cash in the statement of cash flows. ASU 2016-18 becomes effective for the Group on January 1, 2018. The adoption of this accounting pronouncement will impact the presentation of restricted cash in the Group’s Consolidated Statements of Cash Flows. The new guidance permits early adoption. The Group is in the process of evaluating the impact on its consolidated financial statements upon adoption. In May 2017, the FASB issued ASU 2017-09, Compensation — Stock Compensation (Topic 718): Scope of Modification Accounting, which amends the scope of modification accounting for share-based payment arrangements. The ASU provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. The ASU is effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The Group is in the process of evaluating the impact on its consolidated financial statements upon adoption.

SUMMARY OF PRINCIPAL ACCOUNTI29

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2017
SUMMARY OF PRINCIPAL ACCOUNTING POLICIES [Abstract]
Schedule of Accounts Receivable	Accounts December 31, receivable 2016 2017 Customer A $ 1,368,956 $ 1,286,454 Customer B $ 1,576,400 $ 984,918 Customer C $ 1,294,342 $ 682,264
Schedule of Property, Plant and Equipment, Depreciation, Estimated Lives	Property, plant and equipment are recorded at cost less accumulated depreciation. Depreciation is recognized on a straight-line basis over the following estimated useful lives: Buildings and plants 30 Machinery and equipment 15 Furniture, fixtures and equipment 3 5 Motor vehicles 6
Schedule of Share-Based Compensation Expenses	Year ended December 31, 2015 2016 2017 Selling, general and administrative expenses $ 3,323,948 $ 2,501,957 $ 3,679,145 Cost of sales 364,003 200,132 521,128 Total $ 3,687,951 $ 2,702,089 $ 4,200,273

ALLOWANCE FOR DOUBTFUL ACCOUN30

ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables)	12 Months Ended
	Dec. 31, 2017
ALLOWANCES FOR DOUBTFUL RECEIVABLES [Abstract]
Schedule of Allowances for Doubtful Accounts	Analysis of allowances for doubtful accounts is as follows: Year ended December 31, 2015 2016 2017 Beginning of the year $ 3,189,110 $ 1,087,465 $ 10,163 Reversal during the year (2,026,567) (1,053,041) (2,750) Foreign exchange effect (75,078) (24,261) 580 Closing balance $ 1,087,465 $ 10,163 $ 7,993

PREPAID EXPENSE AND OTHER CUR31

PREPAID EXPENSE AND OTHER CURRENT ASSETS (Tables)	12 Months Ended
	Dec. 31, 2017
PREPAID EXPENSE AND OTHER CURRENT ASSETS [Abstract]
Schedule of Prepaid Expense and Other Current Assets	Prepaid expense and other current assets consist of the following: December 31, 2016 2017 Spare parts $ 5,732,914 $ 6,308,655 Prepaid value added tax (“VAT”) 1,808,141 627,463 Prepaid insurance fee 259,650 333,425 Others 226,962 913,024 Total $ 8,027,667 $ 8,182,567

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	Dec. 31, 2017
INVENTORIES [Abstract]
Schedule of Inventories	Inventories consist of the following: December 31, 2016 2017 Raw materials $ 2,947,296 $ 6,087,516 Work-in-process 4,878,905 7,693,833 Finished goods 4,454,499 5,821,975 Total $ 12,280,700 $ 19,603,324

PROPERTY, PLANT AND EQUIPMENT33

PROPERTY, PLANT AND EQUIPMENT, NET (Tables)	12 Months Ended
	Dec. 31, 2017
PROPERTY, PLANT AND EQUIPMENT, NET [Abstract]
Schedule of Property, Plant and Equipment, Net	Property, plant and equipment, net, consist of the following: December 31, 2016 2017 Cost Buildings and plant $ 286,302,082 $ 325,775,766 Machinery and equipment 371,703,665 464,556,735 Furniture, fixtures and equipment 21,355,517 26,701,699 Motor vehicles 334,025 356,560 Less: Accumulated depreciation (206,725,215) (260,287,516) Property, plant and equipment, net $ 472,970,074 $ 557,103,244 Construction in process 84,457,810 22,025,447 Total $ 557,427,884 $ 579,128,691

BORROWINGS (Tables)

BORROWINGS (Tables)	12 Months Ended
	Dec. 31, 2017
BORROWINGS [Abstract]
Schedule of Bank Borrowings	The Group’s bank borrowings consisted of the following: December 31, 2016 2017 Short-term bank borrowings $ 55,582,070 $ 68,400,950 Long-term bank borrowings, current portion 50,398,250 30,899,168 Total borrowings, current 105,980,320 99,300,118 Long-term bank borrowings, non-current portion 111,948,913 113,588,232 Total $ 217,929,233 $ 212,888,350
Schedule of Long-Term Bank Borrowings	The long-term bank borrowings, including current portion, as of December 31, 2016 and 2017 are comprised of: December 31, 2016 2017 Borrowing from Huaxia Bank — 3,074,200 Borrowing from Bank of China 33,118,850 — Borrowing from Chongqing Rural Commercial Bank 129,228,313 141,413,200 Total $ 162,347,163 $ 144,487,400
Schedule of Principal Maturities of Long-term Bank Borrowings	The principal maturities of these long-term bank borrowings as of December 31, 2017 are as follows: Year ending December 31, Amount 2018 $ 30,899,168 2019 35,972,752 2020 33,820,812 2021 24,598,212 2022 15,375,612 2023 3,820,844 Total $ 144,487,400

ACCRUED EXPENSES AND OTHER CU35

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2017
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consist of the following: December 31, 2016 2017 Accrued payroll and welfare $ 3,798,472 $ 5,608,653 Accrued professional fees 374,944 406,887 Other tax payables 1,802,962 5,080,274 Interest payable 390,467 364,708 Others 1,953,196 4,673,886 Total $ 8,320,041 $ 16,134,408

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2017
FAIR VALUE MEASUREMENTS [Abstract]
Schedule of Nonrecurring Fair Value Measurements	Year ended December 31, 2016 Description Carrying Quoted Prices in Significant Significant Total Losses Property, plant and equipment – cannot be relocated to $ 198,689 $ $ $ — $ 198,689 Year ended December 31, 2017 Description Carrying Quoted Prices in Significant Significant Total Losses Property, plant and equipment – cannot be relocated to $ 2,987,668 $ — $ 2,987,668

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2017
INCOME TAXES [Abstract]
Schedule of Income Tax Expenses	Income tax expenses comprise: Year ended December 31, 2015 2016 2017 Current Tax Expenses $ 1,786,092 $ 7,357,623 $ 17,417,528 Deferred Tax Expenses (Benefit) (648,271) 466 (85,302) Total $ 1,137,821 $ 7,358,089 $ 17,332,226
Schedule of Deferred Tax Assets and Liabilities	The principal components of deferred income tax assets are as follows: December 31, 2016 2017 Net operating loss carried forward $ 20,039,534 $ 21,182,813 Allowance for doubtful accounts 1,524 1,998 Government grants related to assets 217,661 211,707 Long-lived assets impairment & depreciation 18,113,967 19,618,474 Others 942,466 1,015,525 Sub-total 39,315,152 42,030,517 Valuation Allowance (38,729,208) (41,316,449) Total $ 585,944 $ 714,068
Schedule of Changes of Valuation Allowance	The changes of valuation allowance are as follows: Year ended December 31, 2015 2016 2017 Beginning balance $ 50,109,751 $ 42,362,849 $ 38,729,208 Reversal (5,708,268) (932,833) (24,771) Foreign exchange effect (2,038,634) (2,700,808) 2,612,012 Ending Balance $ 42,362,849 $ 38,729,208 $ 41,316,449
Schedule of Effective Income Tax Rate Reconciliation	The effective income tax rate of the Group is different from the expected PRC statutory rate as a result of the following items: Year ended December 31, 2015 2016 2017 PRC Enterprise Income Tax 25 % 25 % 25 % Preferential income tax rate of a subsidiary (8) % (10) % (10) % Additional tax deductions (12) % (1) % (1) % Different tax rate in other jurisdictions 8 % 1 % 2 % Changes in valuation allowance (3) % (1) % — % Tax credits (3) % — % — % Withhold tax 1 % — % — % Effective tax rate 8 % 14 % 16 %

SHARE BASED COMPENSATION (Table

SHARE BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2017
SHARE BASED COMPENSATION [Abstract]
Schedule of Assumptions Used	The following assumptions were used in the Binomial option pricing model: Year Ended December 31, 2015 Options Average Exercise Volatility Dividend Post- January 12, 2015 2.82% 1.8-3 times 93.0% 0% 5%-8% July 06, 2015 3.20% 3 times 91.0% 0% 5% September 09, 2015 2.94%-3.08% 1.8-3 times 91.0%-92.0% 0% 5%-8%
Summary of Stock Option Activity	A summary of the aggregate option activity and information regarding options outstanding as of December 31, 2017 is as follows: Number of Weighted Weighted Aggregate Options outstanding on January 1, 2017 15,259,141 0.50 Granted — — Forfeited (24,965) 0.59 Expired (3,584) 0.59 Exercised (5,596,050) 0.49 Options outstanding on December 31, 2017 9,634,542 0.50 5.59 18,935,239 Options vested or expected to vest on December 31, 2017 19,017,508 0.46 5.00 38,124,185 Options exercisable on December 31, 2017 8,282,615 0.48 5.34 16,408,217
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	A summary of the non-vested RSU activity in 2017 is as follows: Number of Weighted Nonvested RSUs on January 1, 2017 — — Granted 12,653,992 0.98 Vested (2,366,374) 0.98 Forfeited (46,875) 0.98 Nonvested RSUs on December 31, 2017 10,240,743 0.98

RELATED PARTY TRANSACTIONS AN39

RELATED PARTY TRANSACTIONS AND BALANCES (Tables)	12 Months Ended
	Dec. 31, 2017
RELATED PARTY TRANSACTIONS AND BALANCES [Abstract]
Schedule of Related Party Balances, Loans	December 31, 2016 2017 Amounts due from related parties Zhenjiang Daqo $ 1,449,824 $ 8,585,337 Others 78,888 412,102 Total $ 1,528,712 $ 8,997,439
Schedule of Related Party Balances, Payables	The balances are payable on demand and are as follows: December 31, 2016 2017 Amounts due to related parties Daqo Group $ 15,076,133 $ 6,075 Daqo New Material 8,323,271 6,014,190 Xinjiang Daqo Investment 79,197 84,541 Chongqing Daqo Tailai 2,107,488 494,954 Nanjing Daqo Transformer 1,022,075 168,774 Others 221,441 1,364 Total $ 26,829,605 $ 6,769,898
Schedule of Related Party Transactions	The transactions with Daqo Group and its subsidiaries were as follows: Transaction Year Ended December 31, Name of Related parties Nature 2015 2016 2017 Daqo Group Proceeds from interest free loans 15,043,550 — 2,696,513 Repayment of interest free loans 20,217,257 10,974,807 2,696,513 Repayment of interest bearing loan — 15,059,000 15,495,451 Interest charged — 850,380 440,368 Rental expense — 27,997 37,756 Zhenjiang Daqo Sales 11,111,239 11,194,197 13,442,273 Daqo Solar Sales 783,705 — — Proceeds from interest free loans 127,060,826 60,300,896 40,089,689 Repayment of interest free loans 151,990,672 68,766,506 40,388,195 Nanjing Daqo Proceeds from interest free loans 13,456,861 — — Repayment of interest free loans 13,456,861 — — Xinjiang Daqo Investment Proceeds from interest free loans 72,946,700 56,270,085 14,356,000 Repayment of interest free loans 73,252,506 38,715,449 14,356,000 Daqo New Material Proceeds from interest free loans 11,082,241 9,607,344 6,029,877 Repayment of interest free loans 11,285,114 12,262,592 10,818,493 Purchase-Fixed assets — — 7,390,693 Rental expense 1,050,661 993,894 976,800 Chongqing Daqo Tailai Purchase-Fixed assets 375,528 3,534,248 715,361 Purchase-Raw material 9,938 — — Income from disposal of fixed assets 6,458 — — Proceeds from interest free loans 6,367,640 222,517 — Repayment of interest free loans 6,367,640 2,684,783 — Others subsidiaries under Daqo Group Repayment of interest free loans 5,296 — — Purchase-Fixed assets 3,488,330 2,120,768 80,240 Purchase-Raw material 22,817 129,219 17,651 Total Sales $ 11,894,944 $ 11,194,197 $ 13,442,273 Income from disposal of fixed assets $ 6,458 $ — $ — Purchase-Fixed assets $ 3,863,858 $ 5,655,016 $ 8,186,294 Purchase-Raw material $ 32,755 $ 129,219 $ 17,651 Rental expense $ 1,050,661 $ 1,021,891 $ 1,014,556 Interest expense $ — $ 850,380 440,368 Proceeds from related parties loans $ 245,957,818 $ 126,400,842 $ 63,172,079 Repayment of related parties loans $ 276,575,346 $ 148,463,137 $ 83,754,652

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2017
EARNINGS PER SHARE [Abstract]
Schedule of Calculation of Earnings Per Share	Year ended December 31, 2015 2016 2017 Numerator used in basic and diluted earnings per share: Net income attributable to Daqo New Energy Corp. ordinary shareholders—basic and diluted $ 12,956,889 $ 43,493,756 $ 92,841,128 Denominator used in basic and diluted earnings per share: Weighted average number of ordinary shares outstanding used in computing earnings per share-basic 258,015,851 261,742,244 265,070,961 Plus: Dilutive effects of share options 3,396,082 3,075,511 6,020,839 Dilutive effects of RSUs - - 1,834,519 Weighted average number of ordinary shares outstanding used in computing earnings per share—diluted 261,411,933 264,817,755 272,926,319 NET INCOME ATTRIBUTABLE TO DAQO NEW ENERGY CORP. PER ORDINARY SHARE—Basic $ 0.05 $ 0.17 $ 0.35 NET INCOME ATTRIBUTABLE TO DAQO NEW ENERGY CORP. PER ORDINARY SHARE—Diluted $ 0.05 0.16 0.34

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2017
COMMITMENTS AND CONTINGENCIES [Abstract]
Schedule of Future Minimum Lease Payments	Future minimum lease payments are as follows: Year ending December 31 2018 $ 1,058,012 2019 11,925 Total $ 1,069,937

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2017
SEGMENT INFORMATION [Abstract]
Summary of Financial Information by Segment	The following table summarizes the Group’s revenue by segment: Year ended December 31, 2015 Polysilicon Wafer Elimination Total Revenue – External $ 125,916,457 56,124,511 - 182,040,968 Revenue - Intersegment 23,485,364 - (23,485,364) - Total Revenue 149,401,821 56,124,511 (23,485,364) 182,040,968 Total Cost of revenue 121,193,840 46,763,308 (23,466,065) 144,491,083 Gross Profit $ 28,207,981 9,361,203 (19,299) 37,549,885 Year ended December 31, 2016 Polysilicon Wafer Elimination Total Revenue – External $ 167,530,309 61,570,902 - 229,101,211 Revenue - Intersegment 28,688,793 - (28,688,793) - Total Revenue 196,219,102 61,570,902 (28,688,793) 229,101,211 Total Cost of revenue 125,320,832 52,413,007 (29,061,146) 148,672,693 Gross Profit $ 70,898,270 9,157,895 372,353 80,428,518 Year ended December 31, 2017 Polysilicon Wafer Elimination Total Revenue – External $ 294,073,020 58,779,131 - 352,852,151 Revenue - Intersegment 29,126,674 - (29,126,674) - Total Revenue 323,199,694 58,779,131 (29,126,674) 352,852,151 Total Cost of revenue 181,595,921 55,992,555 (28,209,010) 209,379,466 Gross Profit $ 141,603,773 2,786,576 (917,664) 143,472,685
Schedule of Revenues of Major Customers	The following customers individually accounted for 10% or more of revenues: Year ended December 31, 2015 2016 2017 Customer A $ 35,094,472 $ 48,739,001 $ 43,258,204 Customer B * * $ 39,219,089 Customer C $ 18,125,773 * $ 39,099,677 Customer D $ 20,465,558 * * Customer E $ 19,595,911 * * * Represents less than 10%

ORGANIZATION AND PRINCIPAL AC43

ORGANIZATION AND PRINCIPAL ACTIVITIES (Details) - USD ($)	1 Months Ended	12 Months Ended
	Aug. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Proceeds from non-controlling interest				$ 2,516,457
Xinjiang Daqo Investment [Member]
Related Party Transaction [Line Items]
Equity interest acquired (as a percent)	1.00%
Daqo Group [Member] | Xinjiang Daqo [Member]
Related Party Transaction [Line Items]
Ownership percentage	100.00%
Proceeds from non-controlling interest	$ 2,500,000

SUMMARY OF PRINCIPAL ACCOUNTI44

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Additional Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 31, 2017	Feb. 17, 2016
Basis of presentation
Working capital	$ 74,100,000
Net income	93,855,400	$ 43,923,997	$ 13,047,584
Cash flow from operations	142,700,000
Restricted cash
Restricted cash	11,989,559	15,893,467
Inventories
Inventory write-down			62,422
Prepaid land use rights
Lease Expenses	572,722	557,162	595,716
Impairment of long-lived assets
Long-lived asset impairment	2,987,668	198,689	1,622,588
Shipping and handling
Shipping and handling costs	4,385,217	3,147,594	2,708,962
Government subsidies
Unrestricted cash government subsidies	6,668,867	4,742,635	3,578,865
Government grants related to assets		323,769	690,889
Foreign currency translation
Aggregate amount of cash and cash equivalents and restricted cash denominated in RMB	66,433,887	28,839,371
Noncontrolling interest
Noncontrolling interest	2,792,480	1,629,161
Treasury Stock
Share repurchase program, authorized amount	5,000,000
Purchase price of treasury stock			1,350,164
Investment accounted for under cost-method
Cost Method Investments	687,074	581,581
Operating Leases, Future Minimum Payments Due	1,069,937
Allocated Share-based Compensation Expense	4,200,273	2,702,089	3,687,951
Syed Fire Safety Service Co [Member]
Investment accounted for under cost-method
Cost Method Investment, Ownership Percentage					15.29%
Cost Method Investments				$ 63,793	$ 581,581
Ordinary shares [Member]
Basis of presentation
Net income
Treasury Stock
Number of shares repurchased			2,356,900

SUMMARY OF PRINCIPAL ACCOUNTI45

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Concentration of Credit Risk) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Concentration of credit risk
Accounts receivable, allowance for doubtful accounts	$ 7,993	$ 10,163
Accounts receivable	2,971,930	4,836,499
Customer A [Member]
Concentration of credit risk
Accounts receivable	1,286,454	1,368,956
Customer B [Member]
Concentration of credit risk
Accounts receivable	984,918	1,576,400
Customer C [Member]
Concentration of credit risk
Accounts receivable	$ 682,264	$ 1,294,342

SUMMARY OF PRINCIPAL ACCOUNTI46

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Property, Plant and Equipment) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, plant and equipment
Interest expense capitalized	$ 87,478	$ 1,757,547	$ 2,825,879
Buildings and plant [Member]
Property, plant and equipment
Estimated useful lives	30 years
Machinery and equipment [Member]
Property, plant and equipment
Estimated useful lives	15 years
Furniture, fixtures and equipment [Member] | Minimum [Member]
Property, plant and equipment
Estimated useful lives	3 years
Furniture, fixtures and equipment [Member] | Maximum [Member]
Property, plant and equipment
Estimated useful lives	5 years
Motor vehicles [Member]
Property, plant and equipment
Estimated useful lives	6 years

SUMMARY OF PRINCIPAL ACCOUNTI47

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Share-based Compensation) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	$ 4,200,273	$ 2,702,089	$ 3,687,951
Selling, general and administrative expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	3,679,145	2,501,957	3,323,948
Cost of sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	$ 521,128	$ 200,132	$ 364,003

EXIT and DISPOSAL ACTIVITIES (D

EXIT and DISPOSAL ACTIVITIES (Details) ¥ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015CNY (¥)	Nov. 30, 2015USD ($)	Dec. 31, 2013USD ($)
Operating results reported as discontinued operations:
Impairment charge	$ 2,987,668	$ 198,689	$ 1,622,588
Relocation costs			1,100,000	¥ 7
Maintenance expenses			300,000
Wages [Member]
Operating results reported as discontinued operations:
Maintenance expenses			200,000
Electricity fees [Member]
Operating results reported as discontinued operations:
Maintenance expenses			100,000
Selling, general and administrative expenses [Member]
Operating results reported as discontinued operations:
Relocation costs		2,600,000	100,000
Significant Production Assets [Member]
Operating results reported as discontinued operations:
Relocation costs	200,000
Carrying Value [Member] | Significant Production Assets [Member]
Operating results reported as discontinued operations:
Carrying value of assets	3,000,000	200,000			$ 1,600,000	$ 144,700,000
Impairment charge		200,000	$ 1,600,000
Carrying value of assets relocated	200,000	$ 34,100,000
Property Plant And Equipment, Expected to be Relocated	$ 11,700,000

FOLLOW-ON EQUITY OFFERINGS (Det

FOLLOW-ON EQUITY OFFERINGS (Details) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 28, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
America depositary shares (ADSs) issued, shares	1,540,000
Follow-on equity offering, net of issuance costs, shares	38,500,000
Issuance cost for ordinary shares	$ 2,000,000			$ 2,033,041
Follow-on equity offering, net of issuance costs	$ 28,000,000			$ 27,996,959

ALLOWANCE FOR DOUBTFUL ACCOUN50

ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis of allowances for accounts receivable is as follows:
Beginning of the year	$ 10,163	$ 1,087,465	$ 3,189,110
Reversal during the year	(2,750)	(1,053,041)	(2,026,567)
Foreign exchange effect	580	(24,261)	(75,078)
Closing balance	7,993	10,163	1,087,465
Allowances reversed during the period	$ 2,750	$ 1,053,041	$ 2,026,567

PREPAID EXPENSE AND OTHER CUR51

PREPAID EXPENSE AND OTHER CURRENT ASSETS (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Spare parts	$ 6,308,655	$ 5,732,914
Prepaid value added tax (“VAT”)	627,463	1,808,141
Prepaid insurance fee	333,425	259,650
Others	913,024	226,962
Total	$ 8,182,567	$ 8,027,667

INVENTORIES (Details)

INVENTORIES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Inventory [Line Items]
Raw materials	$ 6,087,516	$ 2,947,296
Work-in-process	7,693,833	4,878,905
Finished goods	5,821,975	4,454,499
Total	19,603,324	12,280,700
Inventory write-down			$ 62,422

PROPERTY, PLANT AND EQUIPMENT53

PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total	$ 579,128,691	$ 557,427,884
Depreciation of property, plant and equipment	38,824,055	33,822,082	$ 31,361,026
Long-lived asset impairment	2,987,668	198,689	$ 1,622,588
Buildings and plant [Member]
Property, Plant and Equipment [Line Items]
Cost	325,775,766	286,302,082
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	464,556,735	371,703,665
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	26,701,699	21,355,517
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Cost	356,560	334,025
Depreciable Asset [Member]
Property, Plant and Equipment [Line Items]
Less: Accumulated depreciation	(260,287,516)	(206,725,215)
Total	557,103,244	472,970,074
Construction in process [Member]
Property, Plant and Equipment [Line Items]
Cost	22,025,447	$ 84,457,810
Construction in process [Member] | Phase 3B expansion [Member]
Property, Plant and Equipment [Line Items]
Cost	$ 22,000,000

BORROWINGS (Schedule of Bank Bo

BORROWINGS (Schedule of Bank Borrowings) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Short-term bank borrowings	$ 68,400,950	$ 55,582,070
Long-term bank borrowings, current portion	30,899,168	50,398,250
Total borrowings, current	99,300,118	105,980,320
Long-term bank borrowings, non-current portion	113,588,232	111,948,913
Total	$ 212,888,350	$ 217,929,233

BORROWINGS (Short-Term Borrowin

BORROWINGS (Short-Term Borrowings) (Details)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Short-term Debt [Line Items]
Interest rate on short-term bank borrowings	5.10%	5.00%	5.40%

BORROWINGS (Long-Term Borrowing

BORROWINGS (Long-Term Borrowings) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jul. 19, 2017	Jun. 30, 2014
Debt Instrument [Line Items]
Long-term bank borrowings	$ 144,487,400
Huaxia Bank [Member]
Debt Instrument [Line Items]
Maximum borrowing amount of credit facility	$ 115,300,000			$ 3,100,000
Fixed interest rate				16.00%
Weighted average interest rate	5.50%
Proceeds from Lines of Credit	$ 3,100,000
Bank of China [Member]
Debt Instrument [Line Items]
Maximum borrowing amount of credit facility			$ 115,300,000
Amount repaid	35,400,000	$ 35,400,000	44,600,000
Amount of collateral					$ 61,300,000
Long-term bank borrowings	64.6	35,400,000	$ 70,700,000
Chongqing Rural Commercial Bank [Member]
Debt Instrument [Line Items]
Maximum borrowing amount of credit facility	$ 96,100,000
Interest rate spread over rate issued by People's Bank of China	20.00%
Amount repaid	$ 18,400,000	13,100,000
Fixed interest rate	5.90%		5.90%
Line of Credit Facility, Maximum Amount Outstanding During Period		$ 54,900,000	$ 96,100,000
Proceeds from Lines of Credit	$ 21,900,000
Chongqing Rural Commercial Bank [Member] | Facility One [Member]
Debt Instrument [Line Items]
Maximum borrowing amount of credit facility	$ 76,800,000
Bank Facilities [Member]
Debt Instrument [Line Items]
Weighted average interest rate	5.90%	5.80%	44.60%
Long-term bank borrowings	$ 144,487,400	$ 162,347,163
Bank Facilities [Member] | Huaxia Bank [Member]
Debt Instrument [Line Items]
Long-term bank borrowings	3,074,200	0
Bank Facilities [Member] | Bank of China [Member]
Debt Instrument [Line Items]
Long-term bank borrowings	0	33,118,850
Bank Facilities [Member] | Chongqing Rural Commercial Bank [Member]
Debt Instrument [Line Items]
Long-term bank borrowings	$ 141,413,200	$ 129,228,313

BORROWINGS (Schedule of Princip

BORROWINGS (Schedule of Principal Maturities of Bank Borrowings) (Details)	Dec. 31, 2017USD ($)
Debt Instrument [Line Items]
2,018	$ 30,899,168
2,019	35,972,752
2,020	33,820,812
2,021	24,598,212
2,022	15,375,612
2,023	3,820,844
Total	$ 144,487,400

ACCRUED EXPENSES AND OTHER CU58

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Accrued payroll and welfare	$ 5,608,653	$ 3,798,472
Accrued professional fees	406,887	374,944
Other tax payables	5,080,274	1,802,962
Interest payable	364,708	390,467
Others	4,673,886	1,953,196
Total	$ 16,134,408	$ 8,320,041

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived asset impairment	$ 2,987,668	$ 198,689	$ 1,622,588
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived asset impairment	2,987,668	198,689
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property, plant and equipment - identified untransferrable relocation assets
Carrying Value [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property, plant and equipment - identified untransferrable relocation assets	$ 2,987,668	$ 198,689

MAINLAND CHINA CONTRIBUTION P60

MAINLAND CHINA CONTRIBUTION PLAN AND PROFIT APPROPRIATION (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined contribution plan expenses	$ 3,420,774	$ 3,147,927	$ 4,087,334
Aggregate balance of statutory common reserves	31,991,537	$ 21,969,950	$ 17,720,748
Restrictions of statutory reserves	$ 256,018,805

INCOME TAXES (Narrative) (Detai

INCOME TAXES (Narrative) (Details) ¥ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Operating Loss Carryforwards [Line Items]
Income tax paid	$ 9,526,485		$ 2,998,658	$ 2,726,825
Deferred Tax Assets, Valuation Allowance	$ 41,316,449		$ 38,729,208	$ 42,362,849	$ 50,109,751
Statutory enterprise income tax rate	25.00%	25.00%	25.00%	25.00%
State Administration of Taxation, China [Member]
Operating Loss Carryforwards [Line Items]
Statutory enterprise income tax rate	25.00%	25.00%
Preferential tax rate	15.00%	15.00%	15.00%	15.00%
PRC State Council, income tax rate	10.00%	10.00%
Xinjiang Daqo New Energy Co., Ltd. [Member]
Operating Loss Carryforwards [Line Items]
Income tax paid | ¥		¥ 0.1
Chongqing Daqo New Energy Co., Ltd. [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses carried forward	$ 84,700,000
Deferred Tax Assets, Valuation Allowance	$ 41,316,449		$ 38,729,208

INCOME TAXES (Schedule of Incom

INCOME TAXES (Schedule of Income Tax Expenses) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current Tax Expenses	$ 17,417,528	$ 7,357,623	$ 1,786,092
Deferred Tax Expenses (Benefit)	(85,302)	466	(648,271)
Total	$ 17,332,226	$ 7,358,089	$ 1,137,821

INCOME TAXES (Schedule of Defer

INCOME TAXES (Schedule of Deferred Income Tax Assets and Liabilities) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Net operating loss carried forward	$ 21,182,813	$ 20,039,534
Allowance for doubtful accounts	1,998	1,524
Government grants related to assets	211,707	217,661
Long-lived assets impairment & depreciation	19,618,474	18,113,967
Others	1,015,525	942,466
Sub-total	42,030,517	39,315,152
Valuation Allowance	(41,316,449)	(38,729,208)	$ (42,362,849)	$ (50,109,751)
Total	$ 714,068	$ 585,944

INCOME TAXES (Schedule of Chang

INCOME TAXES (Schedule of Changes of Valuation Allowance) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Beginning balance	$ 38,729,208	$ 42,362,849	$ 50,109,751
Reversal	(24,771)	(932,833)	(5,708,268)
Foreign exchange effect	2,612,012	(2,700,808)	(2,038,634)
Ending Balance	$ 41,316,449	$ 38,729,208	$ 42,362,849

INCOME TAXES (Schedule of Effec

INCOME TAXES (Schedule of Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effective income tax rate:
PRC Enterprise Income Tax	25.00%	25.00%	25.00%
Preferential income tax rate of a subsidiary	(10.00%)	(10.00%)	(8.00%)
Additional tax deductions	(1.00%)	(1.00%)	(12.00%)
Different tax rate in other jurisdictions	2.00%	1.00%	8.00%
Changes in valuation allowance		(1.00%)	(3.00%)
Tax credits			(3.00%)
Withhold tax			1.00%
Effective tax rate	16.00%	14.00%	8.00%

INCOME TAXES (Schedule of Eff66

INCOME TAXES (Schedule of Effect of Tax Holidays) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
The aggregate dollar effect	$ 11.3	$ 5.2	$ 1.3
Per share effect-basic and diluted	$ 0.04	$ 0.02	$ 0.01

SHARE BASED COMPENSATION (Narra

SHARE BASED COMPENSATION (Narrative) (Details) - USD ($)	Feb. 03, 2017	Sep. 09, 2015	Jan. 12, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares authorized				21,000,000
Granted		12,569,166	6,274,166	0		8,134,375
Weighted average fair value of stock options granted						$ 0.59
Incremental cost associated with the modification		$ 282,581	$ 241,557
Share-based compensation				$ 4,200,273	$ 2,702,089	$ 3,687,951
Unrecognized compensation cost related to non-vested stock options				$ 833,150
Unrecognized compensation cost, recognition period				1 year 29 days
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price		$ 0.59	$ 0.87	$ 0.49
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Adjustment Description		The total incremental cost associated with the modification was $282,581, of which $123,322 was recognized immediately for the options vested prior to the date of the modification and the remaining share-based compensation charges of $159,259 will be recognized over the remaining vesting period of the modified options.	The total incremental cost associated with the modification was $241,557, of which $60,107 was recognized immediately for the options vested prior to the date of the modification and the remaining share-based compensation charges of $181,470 will be recognized over the remaining vesting period of the modified options.
Restricted Stock or Unit Expense				$ 2,640,410
Share-based Compensation Award, Batch One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted		$ 0.38
Share-based Compensation Award, Batch Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted		0.35
Share-based Compensation Award, Batch Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted		0.38
Share-based Compensation Award, Batch Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted		0.37
Share-based Compensation Award, Batch Five [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted		$ 0.40
Executive officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted			$ 0.52
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted			$ 0.55
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, recognition period				3 years 2 months 1 day
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 0.98
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options				$ 9,713,940
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				12,653,992
Restricted Stock Units (RSUs) [Member] | Share Incentive Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	12,653,992

SHARE BASED COMPENSATION (Sched

SHARE BASED COMPENSATION (Schedule of Assumptions Used with Binomial Option Valuation Model) (Details) - Employee Stock Option [Member]	12 Months Ended
	Dec. 31, 2015
January 12, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free rate of return	2.82%
Volatility rate	93.00%
Dividend yield	0.00%
July 06, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free rate of return	3.20%
Exercise multiple	3
Volatility rate	91.00%
Dividend yield	0.00%
Post-vesting forfeiture rate	5.00%
September 09, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Minimum [Member] | January 12, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple	1.8
Post-vesting forfeiture rate	5.00%
Minimum [Member] | September 09, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free rate of return	2.94%
Exercise multiple	1.8
Volatility rate	91.00%
Post-vesting forfeiture rate	5.00%
Maximum [Member] | January 12, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple	3
Post-vesting forfeiture rate	8.00%
Maximum [Member] | September 09, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free rate of return	3.08%
Exercise multiple	3
Volatility rate	92.00%
Post-vesting forfeiture rate	8.00%

SHARE BASED COMPENSATION (Summa

SHARE BASED COMPENSATION (Summary of Stock Option Activity) (Details) - USD ($)	Sep. 09, 2015	Jan. 12, 2015	Dec. 31, 2017	Dec. 31, 2015
Number of Options
Options outstanding			15,259,141
Granted	12,569,166	6,274,166	0	8,134,375
Forfeited			(24,965)
Expired			(3,584)
Exercised			(5,596,050)
Options outstanding			9,634,542
Options vested or expected to vest			19,017,508
Options exercisable			8,282,615
Weighted Average Exercise Price
Options outstanding			$ 0.5
Granted			0
Forfeited			0.59
Expired			0.59
Exercised	$ 0.59	$ 0.87	0.49
Options outstanding			0.5
Options vested or expected to vest			0.46
Options exercisable			$ 0.48
Weighted Average Remaining Contract Life
Options outstanding			5 years 7 months 2 days
Options vested or expected to vest			5 years
Options exercisable			5 years 4 months 2 days
Aggregate Intrinsic Value
Options outstanding			$ 18,935,239
Options vested or expected to vest			38,124,185
Options exercisable			$ 16,408,217

SHARE BASED COMPENSATION (sum70

SHARE BASED COMPENSATION (summary of the non-vested RSU activity) (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 31, 2017$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested RSUs on January 1, 2017 | shares	0
Granted | shares	12,653,992
Vested | shares	(2,366,374)
Forfeited | shares	(46,875)
Nonvested RSUs on December 31, 2017 | shares	10,240,743
Nonvested RSUs on January 1, 2017 | $ / shares	$ 0
Granted | $ / shares	0.98
Vested | $ / shares	0.98
Forfeited | $ / shares	0.98
Nonvested RSUs on December 31, 2017 | $ / shares	$ 0.98

RELATED PARTY TRANSACTIONS AN71

RELATED PARTY TRANSACTIONS AND BALANCES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 28, 2012
Related Party Transaction [Line Items]
Sales	$ 13,442,273	$ 11,194,197	$ 11,894,944
Related party balances:
Amounts due from related parties	8,997,439	1,528,712
Amounts due to related parties	6,769,898	26,829,605
Daqo Group [Member]
Related party balances:
Amounts due to related parties	6,075	15,076,133
Purchases of Fixed Assets [Member]
Related Party Transaction [Line Items]
Purchases	8,186,294	5,655,016	3,863,858
Purchases of Raw Materials [Member]
Related Party Transaction [Line Items]
Purchases	17,651	129,219	32,755
Rental Expenses [Member]
Related Party Transaction [Line Items]
Expense	1,014,556	1,021,891	1,050,661
Rental Expenses [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Expense	37,756	27,997
Proceeds From Interest Free Loans [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Other transactions			15,043,550
Repayment of Interest Free Loans [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Other transactions	2,696,513	10,974,807	20,217,257
Income (Loss) from Disposal of Fixed Assets [Member]
Related Party Transaction [Line Items]
Other transactions			6,458
Repayment of Interest Bearing Loan [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Other transactions	15,495,451	15,059,000
Interest Expenses Related Party [Member]
Related Party Transaction [Line Items]
Expense	440,368	850,380
Interest Expenses Related Party [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Expense	440,368	850,380
Proceeds From Related Parties Loans [Member]
Related Party Transaction [Line Items]
Other transactions	63,172,079	126,400,842	245,957,818
Repayment Of Related Parties Loans [Member]
Related Party Transaction [Line Items]
Other transactions	83,754,652	148,463,137	276,575,346
Zhengjiang Daqo Solar Co. Ltd [Member]
Related Party Transaction [Line Items]
Sales	13,442,273	11,194,197	11,111,239
Related party balances:
Amounts due from related parties	$ 8,585,337	1,449,824
Zhengjiang Daqo Solar Co. Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Daqo Solar Co Ltd [Member]
Related Party Transaction [Line Items]
Sales			783,705
Daqo Solar Co Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Daqo Solar Co Ltd [Member] | Proceeds From Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions	$ 40,089,689	60,300,896	127,060,826
Daqo Solar Co Ltd [Member] | Repayment of Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions	40,388,195	68,766,506	151,990,672
Xinjiang Daqo Investment Co., Ltd [Member]
Related party balances:
Amounts due to related parties	$ 84,541	79,197
Xinjiang Daqo Investment Co., Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Xinjiang Daqo Investment Co., Ltd [Member] | Proceeds From Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions	$ 14,356,000	56,270,085	72,946,700
Xinjiang Daqo Investment Co., Ltd [Member] | Repayment of Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions	14,356,000	38,715,449	73,252,506
Daqo New Material [Member]
Related party balances:
Amounts due to related parties	$ 6,014,190	8,323,271
Daqo New Material [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Daqo New Material [Member] | Purchases of Fixed Assets [Member]
Related Party Transaction [Line Items]
Purchases	$ 7,390,693
Daqo New Material [Member] | Rental Expenses [Member]
Related Party Transaction [Line Items]
Expense	976,800	993,894	1,050,661
Daqo New Material [Member] | Proceeds From Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions	6,029,877	9,607,344	11,082,241
Daqo New Material [Member] | Repayment of Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions	10,818,493	12,262,592	11,285,114
Chongqing Daqo Tailai [Member]
Related party balances:
Amounts due to related parties	$ 494,954	2,107,488
Chongqing Daqo Tailai [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Chongqing Daqo Tailai [Member] | Purchases of Fixed Assets [Member]
Related Party Transaction [Line Items]
Purchases	$ 715,361	3,534,248	375,528
Chongqing Daqo Tailai [Member] | Purchases of Raw Materials [Member]
Related Party Transaction [Line Items]
Purchases			9,938
Chongqing Daqo Tailai [Member] | Proceeds From Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions		222,517	6,367,640
Chongqing Daqo Tailai [Member] | Repayment of Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions		2,684,783	6,367,640
Chongqing Daqo Tailai [Member] | Income (Loss) from Disposal of Fixed Assets [Member]
Related Party Transaction [Line Items]
Other transactions			6,458
Daqo Transformer [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Jiangsu Daqo [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Nanjing Daqo Electric [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Zhenjiang Klockner-Moeller Electrical Systems Co., Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Nanjing Daqo [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%			100.00%
Nanjing Daqo [Member] | Proceeds From Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions			13,456,861
Nanjing Daqo [Member] | Repayment of Interest Free Loans [Member]
Related Party Transaction [Line Items]
Other transactions			13,456,861
Other Subsidiaries of Daqo Group [Member]
Related party balances:
Amounts due from related parties	412,102	78,888
Amounts due to related parties	1,364	221,441
Other Subsidiaries of Daqo Group [Member] | Purchases of Fixed Assets [Member]
Related Party Transaction [Line Items]
Purchases	80,240	2,120,768	3,488,330
Other Subsidiaries of Daqo Group [Member] | Purchases of Raw Materials [Member]
Related Party Transaction [Line Items]
Purchases	17,651	129,219	22,817
Other Subsidiaries of Daqo Group [Member] | Proceeds From Interest Free Loans [Member]
Related Party Transaction [Line Items]
Expense			$ 5,296
Nanjing Intelligent Apparatus Co., Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Nanjing Intelligent Software Co., Ltd. [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Shanghai Sailfar Electric Technology Co., Ltd. [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Jiangsu Daquan High Voltage Switchgear Co Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	75.00%
Jiangsu Daqo Kai-fan Electric Co Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Zhenjiang Electric Equipment Co Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Nanjing Daqo Transformer [Member]
Related party balances:
Amounts due to related parties	$ 168,774	$ 1,022,075
Jiangsu Daqo ETE Electronic Systerm Co., Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	75.00%
Jiangsu Daquan Kai-fan Switchgear Co., Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%
Nanjing Yidian Huichuang information technology Co., Ltd [Member] | Daqo Group [Member]
Related Party Transaction [Line Items]
Equity interest held	100.00%

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Numerator used in basic and diluted earnings per share:
Net income attributable to Daqo New Energy Corp. ordinary shareholders-basic and diluted	$ 92,841,128	$ 43,493,756	$ 12,956,889
Denominator used in basic and diluted earnings per share:
Weighted average number of ordinary shares outstanding used in computing earnings per share-basic	265,070,961	261,742,244	258,015,851
Weighted average number of ordinary shares outstanding used in computing earnings per share-diluted	272,926,319	264,817,755	261,411,933
NET INCOME ATTRIBUTABLE TO DAQO NEW ENERGY CORP. PER ORDINARY SHARE-Basic	$ 0.35	$ 0.17	$ 0.05
NET INCOME ATTRIBUTABLE TO DAQO NEW ENERGY CORP. PER ORDINARY SHARE-Diluted	$ 0.34	$ 0.16	$ 0.05
Outstanding employee options excluded from computation of diluted earnings per share	263,900	10,899,141	12,563,541
Employee Stock Option [Member]
Denominator used in basic and diluted earnings per share:
Dilutive effects	6,020,839	3,075,511	3,396,082
Restricted Stock Units (RSUs) [Member]
Denominator used in basic and diluted earnings per share:
Dilutive effects	1,834,519	0	0

COMMITMENTS AND CONTINGENCIES73

COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Capital commitments:
Commitments outstanding for the purchase of property, plant and equipment	$ 39,900,000
Lease commitments:
Lease expense	1,014,556	$ 1,024,970	$ 1,050,661
2,018	1,058,012
2,019	11,925
Total	$ 1,069,937

SEGMENT INFORMATION (Details)

SEGMENT INFORMATION (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenue	$ 352,852,151		$ 229,101,211		$ 182,040,968
Total Cost of revenue	209,379,466		148,672,693		144,491,083
Gross profit	$ 143,472,685		$ 80,428,518		$ 37,549,885
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	34.00%		21.00%		51.00%
Polysilicon [Member]
Segment Reporting Information [Line Items]
Revenue	$ 323,199,694		$ 196,219,102		$ 149,401,821
Wafer [Member]
Segment Reporting Information [Line Items]
Revenue	58,779,131		61,570,902		56,124,511
Operating Segments [Member] | Polysilicon [Member]
Segment Reporting Information [Line Items]
Total Cost of revenue	181,595,921		125,320,832		121,193,840
Gross profit	141,603,773		70,898,270		28,207,981
Operating Segments [Member] | Wafer [Member]
Segment Reporting Information [Line Items]
Total Cost of revenue	55,992,555		52,413,007		46,763,308
Gross profit	2,786,576		9,157,895		9,361,203
Elimination [Member]
Segment Reporting Information [Line Items]
Revenue	(29,126,674)		(28,688,793)		(23,485,364)
Total Cost of revenue	(28,209,010)		(29,061,146)		(23,466,065)
Gross profit	(917,664)		372,353		(19,299)
Customer A [Member]
Segment Reporting Information [Line Items]
Revenue	43,258,204		48,739,001		35,094,472
Customer B [Member]
Segment Reporting Information [Line Items]
Revenue	39,219,089			[1]		[1]
Customer C [Member]
Segment Reporting Information [Line Items]
Revenue	39,099,677			[1]	18,125,773
Customer D [Member]
Segment Reporting Information [Line Items]
Revenue		[1]		[1]	20,465,558
Customer E [Member]
Segment Reporting Information [Line Items]
Revenue		[1]		[1]	19,595,911
Revenue - External [Member]
Segment Reporting Information [Line Items]
Revenue	352,852,151		229,101,211		182,040,968
Revenue - External [Member] | Polysilicon [Member]
Segment Reporting Information [Line Items]
Revenue	294,073,020		167,530,309		125,916,457
Revenue - External [Member] | Wafer [Member]
Segment Reporting Information [Line Items]
Revenue	58,779,131		61,570,902		56,124,511
Revenue - External [Member] | Elimination [Member]
Segment Reporting Information [Line Items]
Revenue	0
Revenue - Intersegment [Member]
Segment Reporting Information [Line Items]
Revenue	0		0
Revenue - Intersegment [Member] | Polysilicon [Member]
Segment Reporting Information [Line Items]
Revenue	29,126,674		28,688,793		23,485,364
Revenue - Intersegment [Member] | Wafer [Member]
Segment Reporting Information [Line Items]
Revenue	0
Revenue - Intersegment [Member] | Elimination [Member]
Segment Reporting Information [Line Items]
Revenue	$ (29,126,674)		$ (28,688,793)		$ (23,485,364)
[1]	Represents less than 10%

FINANCIAL STATEMENT SCHEDULE I

FINANCIAL STATEMENT SCHEDULE I (BALANCE SHEET) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 60,676,605	$ 15,987,478	$ 14,490,011	$ 7,068,483
Prepaid expenses and other current assets	8,182,567	8,027,667
Total current assets	142,362,550	73,302,858
TOTAL ASSETS	748,781,233	656,708,076
CURRENT LIABILITIES
Accrued expenses and other current liabilities	16,134,408	8,320,041
Total current liabilities	216,511,379	249,750,421
EQUITY
Ordinary shares ($0.0001 par value 500,000,000 shares authorized as of December 31, 2016 and 2017; 279,214,103 and 279,214,103 shares issued as of December 31, 2016 and 2017, respectively and 262,956,278 and 270,918,702 shares outstanding as of December 31, 2016 and 2017, respectively)	27,328	26,532
Additional paid in capital	247,076,428	240,111,533
Retained earnings	133,273,480	40,432,352
Accumulated other comprehensive income (loss)	13,107,187	(8,721,820)
Treasury shares	(1,748,836)	(1,748,836)
Total shareholders' equity	391,735,587	270,099,761
TOTAL LIABILITIES AND EQUITY	$ 748,781,233	$ 656,708,076
Ordinary shares:
Ordinary shares, par value	$ 0.0001	$ 0.0001
Ordinary shares, shares authorized	500,000,000	500,000,000
Ordinary shares, shares issued	279,214,103	279,214,103
Ordinary shares, shares outstanding	270,918,702	262,956,278
Parent Company [Member]
CURRENT ASSETS
Cash and cash equivalents	$ 4,536,809	$ 2,943,502	$ 2,563,083	$ 4,493,150
Prepaid expenses and other current assets	700,064	223,559
Total current assets	5,236,873	3,167,061
Investments in subsidiaries	386,872,629	267,322,549
TOTAL ASSETS	392,109,502	270,489,610
CURRENT LIABILITIES
Accrued expenses and other current liabilities	373,915	389,849
Total current liabilities	373,915	389,849
EQUITY
Ordinary shares ($0.0001 par value 500,000,000 shares authorized as of December 31, 2016 and 2017; 279,214,103 and 279,214,103 shares issued as of December 31, 2016 and 2017, respectively and 262,956,278 and 270,918,702 shares outstanding as of December 31, 2016 and 2017, respectively)	27,328	26,532
Additional paid in capital	247,076,428	240,111,533
Retained earnings	133,273,480	40,432,352
Accumulated other comprehensive income (loss)	13,107,187	(8,721,820)
Treasury shares	(1,748,836)	(1,748,836)
Total shareholders' equity	391,735,587	270,099,761
TOTAL LIABILITIES AND EQUITY	$ 392,109,502	$ 270,489,610
Ordinary shares:
Ordinary shares, par value	$ 0.0001	$ 0.0001
Ordinary shares, shares authorized	500,000,000	500,000,000
Ordinary shares, shares issued	279,214,103	279,214,103
Ordinary shares, shares outstanding	269,686,178	262,956,278

FINANCIAL STATEMENT SCHEDULE 76

FINANCIAL STATEMENT SCHEDULE I (STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
OPERATING EXPENSES
Total operating expenses	$ (14,763,416)	$ (14,978,848)	$ (11,325,195)
Income from operations	128,709,269	65,449,670	26,224,690
Interest income	487,230	407,996	493,995
Exchange gain	(3,544)	(7,422)	640,678
Income tax expense	(17,332,226)	(7,358,089)	(1,137,821)
Net income attributable to Daqo New Energy Corp. ordinary shareholders	92,841,128	43,493,756	12,956,889
Other comprehensive (loss) income:
Comprehensive income attributable to Daqo New Energy Corp. shareholders	114,670,135	25,991,623	1,700,019
Parent Company [Member]
OPERATING EXPENSES
General and administrative	(4,987,820)	(3,175,482)	(4,142,634)
Total operating expenses	(4,987,820)	(3,175,482)	(4,142,634)
Income from operations	(4,987,820)	(3,175,482)	(4,142,634)
Interest income			1,641
Exchange gain			118,679
Income tax expense			(108,992)
NET LOSS BEFORE SHARE OF RESULTS OF SUBSIDIARIES	(4,987,820)	(3,175,482)	(4,131,306)
Equity in earnings of subsidiaries	97,828,948	46,669,238	17,088,195
Net income attributable to Daqo New Energy Corp. ordinary shareholders	92,841,128	43,493,756	12,956,889
Other comprehensive (loss) income:
Foreign currency translation adjustments	21,829,007	(17,502,133)	(11,256,870)
Total other comprehensive income (loss):	21,829,007	(17,502,133)	(11,256,870)
Comprehensive income attributable to Daqo New Energy Corp. shareholders	$ 114,670,135	$ 25,991,623	$ 1,700,019

FINANCIAL STATEMENT SCHEDULE 77

FINANCIAL STATEMENT SCHEDULE I (STATEMENT OF CHANGES IN EQUITY) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 28, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Balance		$ 271,728,922	$ 241,656,490	$ 206,768,070
Net income		92,841,128	43,493,756	12,956,889
Share-based compensation		4,200,273	2,702,089	3,687,951
Option Exercised		$ 2,765,418	1,051,586	275,783
Option Exercised, shares		5,596,050
Follow-on equity offering, net of issuance costs of $2,033,041	$ 28,000,000			27,996,959
Follow-on equity offering, net of issuance costs of $2,033,041, Shares	38,500,000
Repurchase of ordinary shares				(1,350,164)
Capital injection from non-controlling Shareholders				2,516,457
Restricted shares vested
Balance		394,528,067	271,728,922	241,656,490
Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		$ 26,532	$ 26,320	$ 22,358
Balance, shares		262,956,278	260,836,578	223,577,853
Share-based compensation
Option Exercised		$ 560	$ 212	$ 112
Option Exercised, shares		5,596,050	2,119,700	1,115,625
Follow-on equity offering, net of issuance costs of $2,033,041				$ 3,850
Follow-on equity offering, net of issuance costs of $2,033,041, Shares				38,500,000
Repurchase of ordinary shares
Repurchase of ordinary shares, Shares				(2,356,900)
Capital injection from non-controlling Shareholders
Restricted shares vested		$ 236
Restricted shares vested, Shares		2,366,374
Balance		$ 27,328	$ 26,532	$ 26,320
Balance, shares		270,918,702	262,956,278	260,836,578
Treasury Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		$ (1,748,836)	$ (1,748,836)	$ (398,672)
Share-based compensation
Option Exercised
Follow-on equity offering, net of issuance costs of $2,033,041
Repurchase of ordinary shares				(1,350,164)
Capital injection from non-controlling Shareholders
Restricted shares vested
Balance		(1,748,836)	(1,748,836)	(1,748,836)
Additional paid in capital [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		240,111,533	236,358,070	203,125,494
Share-based compensation		4,200,273	2,702,089	3,687,951
Option Exercised		2,764,858	1,051,374	275,671
Follow-on equity offering, net of issuance costs of $2,033,041				27,993,109
Repurchase of ordinary shares
Capital injection from non-controlling Shareholders				1,275,845
Restricted shares vested		(236)
Balance		247,076,428	240,111,533	236,358,070
Retained earnings (accumulated losses) [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		40,432,352	(3,061,404)	(16,018,293)
Share-based compensation
Option Exercised
Follow-on equity offering, net of issuance costs of $2,033,041
Repurchase of ordinary shares
Capital injection from non-controlling Shareholders
Restricted shares vested
Balance		133,273,480	40,432,352	(3,061,404)
Accumulated other comprehensive income (loss) [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		(8,721,820)	8,780,313	20,037,183
Share-based compensation
Option Exercised
Follow-on equity offering, net of issuance costs of $2,033,041
Repurchase of ordinary shares
Capital injection from non-controlling Shareholders
Restricted shares vested
Balance		13,107,187	(8,721,820)	8,780,313
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		270,099,761	240,354,463	206,768,070
Net income		92,841,128	43,493,756	12,956,889
Other comprehensive loss		21,829,007	(17,502,133)	(11,256,870)
Share-based compensation		4,200,273	2,702,089	3,687,951
Option Exercised		2,765,418	1,051,586	275,783
Follow-on equity offering, net of issuance costs of $2,033,041				27,996,959
Repurchase of ordinary shares				(1,350,164)
Capital injection from non-controlling Shareholders				1,275,845
Balance		391,735,587	270,099,761	240,354,463
Parent Company [Member] | Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		$ 26,532	$ 26,320	$ 22,358
Balance, shares		262,956,278	260,836,578	223,577,853
Option Exercised		$ 560	$ 212	$ 112
Option Exercised, shares		5,596,050	2,119,700	1,115,625
Follow-on equity offering, net of issuance costs of $2,033,041				$ 3,850
Follow-on equity offering, net of issuance costs of $2,033,041, Shares				38,500,000
Repurchase of ordinary shares, Shares				(2,356,900)
Restricted shares vested		$ 236
Restricted shares vested, Shares		2,366,374
Balance		$ 27,328	$ 26,532	$ 26,320
Balance, shares		270,918,702	262,956,278	260,836,578
Parent Company [Member] | Treasury Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		$ (1,748,836)	$ (1,748,836)	$ (398,672)
Repurchase of ordinary shares				(1,350,164)
Balance		(1,748,836)	(1,748,836)	(1,748,836)
Parent Company [Member] | Additional paid in capital [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		240,111,533	236,358,070	203,125,494
Share-based compensation		4,200,273	2,702,089	3,687,951
Option Exercised		2,764,858	1,051,374	275,671
Follow-on equity offering, net of issuance costs of $2,033,041				27,993,109
Capital injection from non-controlling Shareholders				1,275,845
Restricted shares vested		(236)
Balance		247,076,428	240,111,533	236,358,070
Parent Company [Member] | Retained earnings (accumulated losses) [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		40,432,352	(3,061,404)	(16,018,293)
Net income		92,841,128	43,493,756	12,956,889
Balance		133,273,480	40,432,352	(3,061,404)
Parent Company [Member] | Accumulated other comprehensive income (loss) [Member]
Condensed Financial Statements, Captions [Line Items]
Balance		(8,721,820)	8,780,313	20,037,183
Other comprehensive loss		21,829,007	(17,502,133)	(11,256,870)
Balance		$ 13,107,187	$ (8,721,820)	$ 8,780,313

FINANCIAL STATEMENT SCHEDULE 78

FINANCIAL STATEMENT SCHEDULE I (STATEMENT OF CHANGES IN EQUITY) (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2015USD ($)
Follow-on equity offering, issuance costs	$ 2,033,041
Parent Company [Member]
Follow-on equity offering, issuance costs	$ 2,033,041

FINANCIAL STATEMENT SCHEDULE 79

FINANCIAL STATEMENT SCHEDULE I (STATEMENT OF CASH FLOWS) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 28, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES
Net income		$ 92,841,128	$ 43,493,756	$ 12,956,889
Share-based compensation		4,200,273	2,702,089	3,687,951
Adjustments to reconcile net income to net cash used in operating activities:
Prepaid expenses and other current assets		898,903	3,415,637	30,465
Amount due to a related party		849,447	1,815,307	2,178,445
Income tax payable		7,253,601	4,420,313	940,732
Amount due from related party		(6,739,322)	(1,318,195)	5,481,362
Net cash provided by operating activities		142,704,394	98,671,937	66,426,213
INVESTING ACTIVITIES
Disposition of minority interest in subsidiary				5,110,085
Net cash used in investing activities		(63,109,224)	(66,123,053)	(74,132,349)
FINANCING ACTIVITIES
Repurchase of ordinary shares				(1,350,164)
Proceeds from follow-on equity offering				30,030,000
Insurance cost for follow-on equity offering	$ (2,000,000)			(2,033,041)
Proceeds from options exercised		2,238,854	1,051,586	275,783
Net cash provided by (used in) financing activities		(37,354,319)	(30,279,523)	15,242,079
Net increase in cash and cash equivalents		44,689,127	1,497,467	7,421,528
Cash and cash equivalents at the beginning of the year		15,987,478	14,490,011	7,068,483
Cash and cash equivalents at the end of the year		60,676,605	15,987,478	14,490,011
Parent Company [Member]
OPERATING ACTIVITIES
Net income		92,841,128	43,493,756	12,956,889
Equity in earnings of subsidiaries		(97,828,948)	(46,669,238)	(17,088,195)
Share-based compensation		4,200,273	2,702,089	3,687,951
Adjustments to reconcile net income to net cash used in operating activities:
Prepaid expenses and other current assets		50,059	(29,976)	11,099
Changes in other current liabilities		91,941	(58,806)	(96,166)
Amount due to a related party			0	(286,526)
Income tax payable		0	(108,992)	108,992
Amount due from related party
Net cash provided by operating activities		(645,547)	(671,167)	(705,956)
INVESTING ACTIVITIES
Capital contributed to subsidiaries			0	(33,256,774)
Disposition of minority interest in subsidiary			0	5,110,085
Net cash used in investing activities			0	(28,146,689)
FINANCING ACTIVITIES
Repurchase of ordinary shares			0	(1,350,164)
Proceeds from follow-on equity offering			0	30,030,000
Insurance cost for follow-on equity offering			0	(2,033,041)
Proceeds from options exercised		2,238,854	1,051,586	275,783
Net cash provided by (used in) financing activities		2,238,854	1,051,586	26,922,578
Net increase in cash and cash equivalents		1,593,307	380,419	(1,930,067)
Cash and cash equivalents at the beginning of the year		2,943,502	2,563,083	4,493,150
Cash and cash equivalents at the end of the year		$ 4,536,809	$ 2,943,502	$ 2,563,083