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Inventory (Details) - USD ($)	Feb. 28, 2021	May 31, 2020
Inventory Disclosure [Abstract]
Finished goods	$ 23,723	$ 29,839
Raw materials	277,800	258,285
Inventory, net	$ 301,523	$ 288,124

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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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-Name Accounting Standards Codification
-Topic 210
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-Section S99
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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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-Name Accounting Standards Codification
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-SubTopic 10
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