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Note 6 - Inventories - Schedule of Inventory (Details) - USD ($)
Jun. 30, 2019
Sep. 30, 2018
Raw materials $ 5,405,868 $ 4,487,273
Finished goods 1,235,468 1,768,544
Work in process 289,592 875,417
Inventories, gross 6,930,928 7,131,234
Reserve for obsolescence (518,086) (397,051)
Inventories, net $ 6,412,842 $ 6,734,183