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PREPAID EXPENSE AND OTHER CURRENT ASSETS (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
PREPAID EXPENSE AND OTHER CURRENT ASSETS [Abstract]    
Spare parts $ 3,975,860 $ 3,166,462
Prepaid Value added tax ("VAT") 18,705,984 5,399,839
VAT Refundable    1,002,186
Prepaid insurance fee 471,721 1,121,769
Others 780,402 461,886
Total $ 23,933,967 $ 11,152,142