v3.26.1
Significant Accounting Policies (Details)
6 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2026
CNY (¥)
Sep. 30, 2025
USD ($)
Significant Accounting Policies [Line Items]        
Depositor amount $ 70,000   ¥ 500,000  
Restricted cash 6,826,537     $ 3,141,756
Time deposits 433,798     100,164
Credit loss reversals (335,966) $ 4,818    
Allowance for advance to suppliers 892,723     1,183,298
Allowance for credit losses of notes receivable 128,561      
Allowance for credit losses of other receivable 7,294      
Write-downs recognized of inventories    
Residual value percentage 5.00%   5.00%  
Impairment charge recognized for long-lived assets    
Advance from customers 2,163,518     1,317,816
Advance from customers recognized revenue 1,289,145 1,216,185    
Shipping and handling costs 580,338 488,242    
Advertising costs 74,529 83,884    
Deferred government grants 1,159,756     1,123,753
Government grants $ 379,803 243,044    
Percentage of tax benefit 50.00%      
After-tax profit percentage 10.00%      
Registered capital 50.00%      
Securities percentage 10.00%      
Cash and cash equivalents $ 2,259,613 $ 9,205,552   6,483,489
Suppliers [Member]        
Significant Accounting Policies [Line Items]        
Allowance for advance to suppliers $ 244,451     $ 197,935
PRC GAAP [Member]        
Significant Accounting Policies [Line Items]        
After-tax profit percentage 10.00%      
Registered capital 50.00%      
Accounts Receivable [Member]        
Significant Accounting Policies [Line Items]        
Allowance for credit losses of other noncurrent assets $ 107,740      
Minimum [Member]        
Significant Accounting Policies [Line Items]        
VAT rates 6.00%      
Maximum [Member]        
Significant Accounting Policies [Line Items]        
VAT rates 13.00%