Quarterly report pursuant to Section 13 or 15(d)

Inventory (Tables)

v3.21.1
Inventory (Tables)
9 Months Ended
Feb. 28, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventory, consisting of material, overhead, labor, and manufacturing overhead, is stated at the lower of cost (first-in, first-out) or market, and consists of the following:


   

February 28,

   

May 31,

 
   

2021

   

2020

 

Raw materials

  $ 419,462     $ 134,697  

Finished goods

    550,194       440,545  

Total

  $ 969,656     $ 575,242