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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - Inventories - USD ($)	May 31, 2022	May 31, 2021
Inventories Abstract
Raw materials	$ 1,717,000	$ 1,812,000
Work in progress	763,000	1,687,000
Finished products	782,000	1,324,000
Total Gross Inventory	3,262,000	4,823,000
Inventory Reserve	(846,000)	(1,617,000)
Net Inventory	$ 2,416,447	$ 3,206,255

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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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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