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INVENTORIES. (Details) (USD $)
Sep. 27, 2014
Dec. 28, 2013
INVENTORIES    
Raw materials $ 17,797,423 $ 20,877,513
Work-in-progress 2,941,077 3,673,301
Finished goods 4,524,031 7,945,441
Total $ 25,262,531 $ 32,496,255