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Inventories - Inventories (Details) - USD ($)
Jan. 31, 2017
Oct. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 1,856,895 $ 1,813,545
Work in process 1,454,729 1,291,729
Finished goods 367,841 733,841
Inventories $ 3,679,465 $ 3,839,115