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Inventories (Details) (USD $)
Jun. 30, 2012
Dec. 31, 2011
INVENTORIES [Abstract]    
Raw materials $ 993,442 $ 1,244,119
Work in process 2,087,873 825,466
Finished goods 1,357,343 1,566,145
Total Inventories $ 4,438,658 $ 3,635,730