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Inventory (Tables)
6 Months Ended
Nov. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory

Inventory consists of the following:

 

    November 30,     May 31,  
    2020     2020  
Raw materials   $ 1,586,089     $ 1,953,957  
Finished goods     1,643,797       2,275,938  
Total inventory   $ 3,229,886     $ 4,229,895