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Note 4 - Inventories (Tables)
3 Months Ended
Jan. 31, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

January 31,

   

October 31,

 
   

2020

   

2019

 

Finished goods

  $ 5,170,602     $ 5,845,973  

Work in process

    3,287,286       3,321,216  

Raw materials

    8,434,081       8,632,230  

Production supplies

    288,170       296,208  

Total

  $ 17,180,139     $ 18,095,627