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INVENTORIES. (Details) (USD $)
Dec. 29, 2012
Dec. 31, 2011
INVENTORIES.    
Raw materials $ 21,557,053 $ 22,193,744
Work-in-progress 3,654,801 6,748,162
Finished goods 7,097,077 9,192,956
Total $ 32,308,931 $ 38,134,862