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PROPERTY, PLANT AND EQUIPMENT, NET
12 Months Ended
Dec. 31, 2015
PROPERTY, PLANT AND EQUIPMENT, NET [Abstract]  
PROPERTY, PLANT AND EQUIPMENT, NET

8. PROPERTY, PLANT AND EQUIPMENT, NET

 

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

 

  December 31,
    2014     2015  
Cost                
Buildings and plant   $ 233,230,935     $ 313,290,516  
Machinery and equipment     351,409,724       389,373,554  
Furniture, fixtures and equipment     18,469,913       22,418,768  
Motor vehicles     257,408       293,331  
Less: Accumulated depreciation     (169,264,463 )     (188,680,279 )
Property, plant and equipment, net    $ 434,103,517     $ 536,695,889  
Construction in process     124,902,602       7,630,236  
Total   $ 559,006,119     $ 544,326,125  

 

Depreciation expense was $52,250,595, $28,007,943 and $31,361,026 for the years ended December 31, 2013, 2014 and 2015, respectively.

 

The Company recognized impairments for long-lived assets of $158,424,827, $nil and $1,622,588 during the years ended December 31, 2013, 2014 and 2015, respectively.