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Note 4 - Inventories - Components of Inventories (Details) - USD ($)
Apr. 30, 2020
Oct. 31, 2019
Finished goods $ 5,109,148 $ 5,845,973
Work in process 3,794,390 3,321,216
Raw materials 7,862,534 8,632,230
Production supplies 271,080 296,208
Total $ 17,037,152 $ 18,095,627