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Note 4 - Inventories - Components of Inventories (Details) - USD ($)
Apr. 30, 2018
Oct. 31, 2017
Finished goods $ 4,831,941 $ 5,869,269
Work in process 3,621,043 2,507,434
Raw materials 10,015,377 8,108,433
Production supplies 295,214 296,313
Total $ 18,763,575 $ 16,781,449