Quarterly report pursuant to Section 13 or 15(d)

Inventory (Tables)

v3.20.1
Inventory (Tables)
9 Months Ended
Feb. 29, 2020
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 29,

   

May 31,

 
   

2020

   

2019

 

Raw materials

  $ 186,351     $ 323,635  

Finished goods

    543,979       423,198  

Total

  $ 730,330     $ 746,833