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FAIR VALUE MEASUREMENTS (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-lived assets held and used $ 10,532,637    
Long-lived asset impairment 42,754,481 38,512,376   
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-lived assets held and used       
Significant Other Observable Inputs (Level 2) [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-lived assets held and used       
Significant Unobservable Inputs (Level 3) [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-lived assets held and used 10,532,637    
Carrying Value [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-term bank borrowing 187,520,880 165,646,211  
Payables for purchase of property, plant and equipment 1,126,255 4,157,836  
Long-lived assets held and used 53,300,000    
Fair Value [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-term bank borrowing 166,148,388 151,251,136  
Payables for purchase of property, plant and equipment 1,014,716 3,701,431  
Long-lived assets held and used 10,500,000    
Long-lived asset impairment $ 42,800,000