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PREPAID EXPENSE AND OTHER CURRENT ASSETS
12 Months Ended
Dec. 31, 2014
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,  
    2013     2014  
Spare parts   $ 6,264,805     $ 6,385,388  
Prepaid Value added tax (“VAT”)     15,273,592       5,857,017  
Prepaid insurance fee     218,865       226,564  
Others     2,113,428       366,900  
Total   $ 23,870,690     $ 12,835,869