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Inventories (Details) - USD ($)	Feb. 28, 2019	Feb. 28, 2018
Inventories Tables Abstract
Raw materials	$ 873,483	$ 673,969
Finished goods	571,640	395,410
Work in process	483,271	489,082
Total	1,928,394	1,558,461
Less: Allowance	270,378	204,378
Net inventories	$ 1,658,016	$ 1,354,083

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Inventories

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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