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Related Party Transactions (Details)
12 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2021
CNY (¥)
Sep. 30, 2020
USD ($)
Sep. 30, 2020
CNY (¥)
Sep. 30, 2019
USD ($)
Sep. 30, 2019
CNY (¥)
Taizhou Huadi Industrial Ltd. [Member]            
Related Party Transactions (Details) [Line Items]            
Raw materials purchased from related party $ 6,376,512   $ 14,521,129   $ 11,641,219  
Outstanding balance 5,550,504   5,342,512   5,251,600  
Material sold to related party     3,228,396   1,276,462  
Accounts receivable     1,880,762   498,125  
Huizhi Wang [Member]            
Related Party Transactions (Details) [Line Items]            
Borrowed working capitals $ 1,844,111 ¥ 12,000,000 $ 1,427,429 ¥ 10,000,000 $ 699,526 ¥ 5,000,000
Annual interest rate 8.00%   8.00%   8.00%  
Juelin Wang [Member]            
Related Party Transactions (Details) [Line Items]            
Borrowed working capitals $ 998,894 6,500,000 $ 713,715 5,000,000 $ 699,526 5,000,000
Annual interest rate 8.00%   8.00%   8.00%  
Bing Zhang [Member]            
Related Party Transactions (Details) [Line Items]            
Borrowed working capitals $ 1,844,111 ¥ 12,000,000 $ 713,713 5,000,000 $ 699,526 5,000,000
Annual interest rate 8.00%       8.00%  
Jueqin Wang [Member]            
Related Party Transactions (Details) [Line Items]            
Outstanding balance $ 359,716   341,374   $ 254,319  
Repaid the borrowed amount | ¥       500,000    
Di Wang [Member]            
Related Party Transactions (Details) [Line Items]            
Borrowed working capitals     142,743 1,000,000    
Yiyu Wang [Member]            
Related Party Transactions (Details) [Line Items]            
Outstanding balance     919,053      
Borrowed working capitals         $ 1,748,814 ¥ 12,500,000
Annual interest rate         8.00%  
Repaid the borrowed amount     $ 893,571 ¥ 6,260,000