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INVENTORIES (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
INVENTORIES [Abstract]      
Raw materials $ 2,343,104 $ 1,362,944  
Work-in-process 5,626,531 5,411,360  
Finished goods 2,746,304 2,807,480  
Total 10,715,939 9,581,784  
Inventory write-down $ 62,422 $ 175,568 $ 29,905,734