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INVENTORIES (Details) (USD $)	Oct. 31, 2012	Jan. 31, 2012
INVENTORIES [Abstract]
Raw materials	$ 14,650,885	$ 12,673,210
Work in progress	2,618,133	2,808,747
Finished goods	1,629,932	2,365,186
Inventories, net	$ 18,898,950	$ 17,847,143

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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