Quarterly report pursuant to Section 13 or 15(d)

INVENTORIES (Details)

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INVENTORIES (Details) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials $ 33,913,945 $ 34,821,694
Work-in-process 3,911,265 5,096,515
Finished goods 22,621,447 23,897,426
Inventories, net $ 60,446,657 $ 63,815,635