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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Cash flows from operating activities:      
Net Income $ 1,366,257 $ 3,108,144 $ 4,940,441
Adjustments to reconcile net income to net cash provided by operating activities:      
Amortization of the Right-of-use assets 22,451 62,410 62,410
Stock based compensation 20,000    
Depreciation and amortization 1,224,672 1,201,229 1,105,588
Provision of doubtful accounts (186,814) (7,918) 188,095
Inventory reserve 444,894 92,059 (290,968)
Deferred tax expense 189,838 (46,187) (86,495)
Unrealized loss (gain) from available-for-sale securities 853,000 (323,400)  
Investment income (40,196) (69,494) (57,984)
Loss from assets disposal 8,755    
Changes in operating assets and liabilities:      
Accounts receivable 1,027,671 (545,175) (660,667)
Bank acceptance notes receivable 8,744,826 387,673 (5,583,925)
Inventories 2,230,723 46,801 1,402,620
Advances to suppliers 41,869 (855,977) 498,378
Other current assets (1,198,646) (1,020,875) 125,261
Accounts payable (805,443) 2,015,833 613,339
Advance from customers (1,827,461) (1,221,897) 1,461,407
Advance from customers - related parties (17,066) (17,467) 29,973
Deferred revenue (275,963) (407,563) (314,238)
Tax payables 584,693 (1,142,721) 988,423
Accrued expenses and other payables 301,165 (897,496) 722,284
Operating lease liabilities (55,036) (12,945) (67,928)
Net cash provided by operating activities 12,654,188 345,034 5,076,014
Cash flows from investing activities:      
Purchase of property and equipment (3,232,269) (3,491,564) (449,766)
Purchase of intangible assets (26,683) (1,810) (8,798)
Proceeds from long term investment     82,972
Purchase of available-for-sale securities   (20,000,000)  
Acquisition of non-controlling interest   (706,658)  
Net cash used in investing activities (3,258,953) (24,200,032) (375,592)
Cash flows from financing activities:      
Proceeds from bank loans 3,204,541   7,135,009
Repayment of bank loans (3,051,944) (7,681,081) (4,994,506)
Proceeds from (Repayment of) bank notes payable (6,090,126) 7,804,778  
Cash receipts from equity issuance, net of issuance cost   23,869,641  
Net cash provided by (used in) financing activities (5,937,529) 23,993,338 2,140,503
Effect of exchange rate change on Cash (1,086,067) 601,903 431,765
Net increase in cash and cash equivalents 2,371,640 740,243 7,272,690
Cash, cash equivalent and restricted cash at beginning of period 12,607,373 11,867,130 4,594,440
Cash, cash equivalent and restricted cash at end of period 14,979,013 12,607,373 11,867,130
Supplemental cash flow information      
Cash paid for interest $ 122,237 152,499 280,169
Cash paid for income taxes   $ 820,972 275,607
Operating lease right of use assets obtained in exchange of lease liabilities     $ 143,443