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Note 4 - Inventories - Components of Inventories (Details) - USD ($)
Jul. 31, 2019
Oct. 31, 2018
Finished goods $ 5,965,837 $ 5,454,629
Work in process 4,169,232 3,877,670
Raw materials 8,385,386 7,871,145
Production supplies 292,056 271,311
Total $ 18,812,511 $ 17,474,755