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Note 3 - Inventory (Tables)
3 Months Ended
Aug. 31, 2023
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

August 31,

   

May 31,

 
   

2023

   

2023

 

Raw materials

  $ 2,830,133     $ 2,299,911  

Finished goods

    2,477,673       2,184,195  

Total inventory

  $ 5,307,806     $ 4,484,106