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Note 3 - Inventories
9 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Inventory Disclosure [Text Block]
3.
    INVENTORIES
 
The components of inventories were as follows:
 
   
March 31, 2020
   
June 30, 2019
 
Raw materials
  $
1,915,307
    $
1,848,340
 
Finished goods
   
4,622,349
     
6,604,408
 
Inventories, gross    
6,537,656
     
8,452,748
 
Reserve for obsolete inventory
   
(1,546,095
)    
(1,601,300
)
Inventories, net
  $
4,991,561
    $
6,851,448