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3. INVENTORIES (Details) - Inventory Detail (USD $)
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Inventory Detail [Abstract]      
Raw materials $ 13,368,153 $ 10,958,796 $ 13,363,226
Work-in-process 1,035,510 660,910 663,388
Finished goods 64,013,146 66,657,704 54,341,967
Reserve for obsolescence or lower of cost or market (108,150) (105,740) (110,480)
Total $ 78,308,659 $ 78,171,670 $ 68,258,101