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Inventory (Tables)
9 Months Ended
Feb. 29, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory

Inventory consists of the following:

 

    February 29, 2020     May 31, 2019  
Raw materials   $ 1,919,222     $ 1,295,991  
Finished goods     1,956,877       1,325,000  
Total inventory   $ 3,876,099     $ 2,620,991