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Note 4 - Inventories - Components of Inventories (Details) - USD ($)
Jul. 31, 2017
Oct. 31, 2016
Finished goods $ 5,780,827 $ 4,657,779
Work in process 3,144,780 2,591,885
Raw materials 9,083,691 7,515,717
Production supplies 345,627 258,585
Total $ 18,354,925 $ 15,023,966