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Note 4 - Inventories - Components of Inventories (Details) - USD ($)
Jan. 31, 2021
Oct. 31, 2020
Finished goods $ 5,289,945 $ 4,663,978
Work in process 3,560,464 4,165,289
Raw materials 8,268,453 8,010,794
Production supplies 261,299 259,706
Total $ 17,380,161 $ 17,099,767