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Note 4 - Inventories - Components of Inventories (Details) - USD ($)
Jan. 31, 2018
Oct. 31, 2017
Finished goods $ 5,131,672 $ 5,869,269
Work in process 3,501,825 2,507,434
Raw materials 8,705,484 8,108,433
Production supplies 282,559 296,313
Total $ 17,621,540 $ 16,781,449