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PROPERTY, PLANT AND EQUIPMENT, NET (Tables)
12 Months Ended
Dec. 31, 2012
PROPERTY, PLANT AND EQUIPMENT, NET [Abstract]  
Schedule of Property, Plant and Equipment, Net

Property, plant and equipment, net, consist of the following:

 

                 
     December 31,  
     2011     2012  

Cost

                

Buildings and plant

   $ 222,690,125      $ 437,805,571   

Machinery and equipment

     261,834,469        344,782,948   

Furniture, fixtures and equipment

     4,119,045        9,233,575   

Motor vehicles

     591,714        519,923   

Less: Accumulated depreciation

     (96,375,060     (133,746,851
    

 

 

   

 

 

 

Property, plant and equipment, net

   $ 392,860,293      $ 658,595,166   

Construction in process

     243,614,398        19,300,108   
    

 

 

   

 

 

 

Total

   $ 636,474,691      $ 677,895,274