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INCOME TAXES - Reconciliation (Details)
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Income Tax Disclosure [Abstract]      
Statutory rate 25.00% 25.00% 25.00%
Effect of preferential tax treatment     (3.00%)
Change in valuation allowance (25.00%) (24.00%) (26.00%)
Over provision in prior year     4.00%
Effective income tax rate 0.00% 1.00% 0.00%