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Note 6 - Inventories
 9 Months Ended
Jun. 30, 2017
Notes to Financial Statements  
Inventory Disclosure [Text Block]
Note
6.
Inventories
 
Inventories consist of the following as of:
 
    June 30, 2017   September 30, 2016
Raw materials   $
7,096,105
     $
5,702,762
  
Work-in-progress    
653,701
      
471,305
  
Finished goods    
1,588,807
      
2,199,088
  
Inventories   $
9,338,613
     $
8,373,155