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Note 9 - Prepaid Expenses and Other - Summary of Prepaid Expenses and Others (Details) - USD ($)
Mar. 31, 2020
Sep. 30, 2019
Deposits for inventory $ 347,194 $ 1,064,640
Prepaid insurance 211,638 194,285
Prepaid rent 87,782
Dues and subscriptions 65,365 88,031
Trade shows and travel 149,167 106,626
Other 221,280 240,473
Prepaid expenses and other $ 994,644 $ 1,781,837