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Note 6 - Inventories - Schedule of Inventory (Details) - USD ($)
Mar. 31, 2020
Sep. 30, 2019
Raw materials $ 5,591,252 $ 5,060,331
Finished goods 920,663 998,607
Work in process 1,068,097 306,809
Inventories, gross 7,580,012 6,365,747
Reserve for obsolescence (658,183) (530,584)
Inventories, net $ 6,921,829 $ 5,835,163