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Document and Entity Information
 12 Months Ended
Dec. 31, 2012
Document Information [Line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2012
Document Fiscal Year Focus 2012
Document Fiscal Period Focus FY
Trading Symbol DQ
Entity Registrant Name DAQO NEW ENERGY CORP.
Entity Central Index Key 0001477641
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer No
Entity Current Reporting Status Yes
Entity Filer Category Non-accelerated Filer
Entity Common Stock, Shares Outstanding 172,877,433