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Inventories (Details) - USD ($)	Nov. 30, 2015	Feb. 28, 2015
Inventories Tables
Finished goods	$ 623,819	$ 441,026
Work in process	271,341	220,577
Raw materials	1,676,081	1,692,202
Total	2,571,241	2,353,805
Less: Allowance	177,272	294,628
Net inventories	$ 2,393,969	$ 2,059,177

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