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Note 6 - Inventories
3 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Inventory Disclosure [Text Block]
Note
6.
Inventories
 
Inventories consist of the following as of:
 
    December 31, 2019   September 30, 2019
Raw materials   $
8,384,548
    $
7,115,298
 
Work-in-progress    
778,957
     
540,962
 
Finished goods    
1,466,936
     
1,356,720
 
Inventories, net   $
10,630,441
    $
9,012,980