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PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($)
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Property, Plant and Equipment [Line Items]      
Subtotal $ 28,040,143 $ 26,286,001  
Construction in progress 158,975 148,197  
Less: accumulated depreciation (20,780,090) (18,768,876)  
Property and equipment, net 7,419,028 7,665,322  
Depreciation expense 1,055,314 1,137,822 $ 1,198,142
Property and buildings      
Property, Plant and Equipment [Line Items]      
Subtotal 9,114,893 8,429,891  
Machinery and equipment      
Property, Plant and Equipment [Line Items]      
Subtotal 18,175,739 17,179,561  
Automobiles      
Property, Plant and Equipment [Line Items]      
Subtotal 611,923 575,080  
Office and electric equipment      
Property, Plant and Equipment [Line Items]      
Subtotal $ 137,588 $ 101,469