Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

ACCOUNTS RECEIVABLE (Details)

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ACCOUNTS RECEIVABLE (Details) - USD ($)
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
ACCOUNTS RECEIVABLE      
Accounts receivable, gross $ 29,346,829 $ 33,413,662  
Less: allowance for doubtful accounts (2,221,870) (2,020,373) $ (1,919,152)
Accounts receivable, net $ 27,124,959 $ 31,393,289