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Inventories (Details) - USD ($)	Feb. 29, 2020	Feb. 28, 2019
Inventories Tables Abstract
Raw materials	$ 967,089	$ 873,483
Finished goods	752,999	571,640
Work in process	855,083	483,271
Total	2,575,171	1,928,394
Less: Allowance	193,280	270,378
Net inventories	$ 2,381,891	$ 1,658,016

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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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