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Inventories (Details) - USD ($)	Feb. 28, 2017	Feb. 29, 2016
Inventories Tables
Raw materials	$ 1,197,506	$ 1,452,566
Finished goods	369,428	549,106
Work in process	28,460	118,415
Total	1,595,394	2,120,087
Less: Allowance	254,710	174,704
Net inventories	$ 1,340,684	$ 1,945,383

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