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PREPAID EXPENSE AND OTHER CURRENT ASSETS
 12 Months Ended
Dec. 31, 2012
PREPAID EXPENSE AND OTHER CURRENT ASSETS [Abstract]  
PREPAID EXPENSE AND OTHER CURRENT ASSETS

5. PREPAID EXPENSE AND OTHER CURRENT ASSETS

Prepaid expense and other current assets consist of the following:

 

                 
     December 31,  
     2011      2012  

Spare parts

    $ 3,166,462       $ 3,975,860   

Prepaid Value added tax ("VAT")

      5,399,839         18,705,984   

VAT Refundable

      1,002,186         -     

Prepaid insurance fee

      1,121,769         471,721   

Others

      461,886         780,402   
    

 

 

     

 

 

  

Total

    $ 11,152,142       $ 23,933,967