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TAXES - Company's Effective Tax Rate (Details)
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Reconciles the statutory rates, Percent      
China Statutory income tax rate 25.00% 25.00% 25.00%
Effect of favorable income tax rate in the PRC (10.50%) (10.20%) (10.10%)
Non-deductible permanent difference 0.40% 0.10% 0.40%
Effective tax rate 14.90% 14.90% 15.30%