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Note 5 - Inventories - Schedule of Inventory (Details) - USD ($)
Sep. 30, 2017
Sep. 30, 2016
Raw materials $ 3,784,935 $ 4,393,928
Finished goods 1,742,960 775,628
Work in process 147,871 174,485
Inventories, gross 5,675,766 5,344,041
Reserve for obsolescence (418,532) (580,132)
Inventories, net $ 5,257,234 $ 4,763,909