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Note 7 - Inventories - Schedule of Inventory (Details) - USD ($)
Mar. 31, 2018
Sep. 30, 2017
Raw materials $ 5,135,966 $ 3,784,935
Finished goods 417,587 1,742,960
Work in process 393,756 147,871
Inventories, gross 5,947,309 5,675,766
Reserve for obsolescence (503,967) (418,532)
Inventories, net $ 5,443,342 $ 5,257,234