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INTANGIBLE ASSETS - Estimated amortization expense of intangible assets (Details) - USD ($)
Sep. 30, 2019
Sep. 30, 2018
INTANGIBLE ASSETS    
2020 $ 129,432  
2021 91,967  
2022 91,967  
2023 91,967  
2024 91,967  
Thereafter 237,471  
Total $ 734,771 $ 864,203