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Note 7 - Inventories (Tables)
9 Months Ended
Mar. 31, 2026
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

March 31,

  

June 30,

 
  

2026

  

2025

 

Raw materials

 $7,152,348  $4,507,764 

Work in process

  6,088,970   7,321,779 

Finished goods

  2,468,766   3,053,726 

Allowance for obsolescence

  (2,365,379)  (2,024,431)

Total inventories, net

 $13,344,705  $12,858,838