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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Cash flows from operating activities        
Net income (loss) $ 2,356,438 $ 813,455 $ (311,004)  
Net loss from discontinued operations 51,352 263,847 92,725  
Net income (loss) from continuing operations 2,407,790 1,077,302 (218,279)  
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:        
Changes in allowances - accounts receivables (116,862) 115,712    
Changes in allowances - advances to suppliers (758,232) 702,486    
Changes in allowances - inventories (19,323) 17,902    
Depreciation and amortization 68,418 65,232 36,522  
Non-cash lease expenses 91,573 17,437    
Gain from disposal of property and equipment (55,801)      
Accrued interest expense for convertible notes   135,867 1,087,774  
Amortization of deferred financing costs   1,093,440 2,113,492  
Share-based compensation 1,260,674      
Changes in operating assets and liabilities:        
Accounts receivables (13,040,158) 3,929,713 (6,058,202)  
Advances to suppliers (40,989,649) (9,115,037) (8,685,398)  
Inventory, net (1,212,031) 380,175 (118,874)  
Other current assets (258,117) 54,749 (51,300)  
Accounts payable 26,404 (84,425) (108,022)  
Operating lease liabilities (75,879) (46,082)    
Other current liabilities (559,915) (172,089) 605,480  
Net cash used in operating activities from continuing operations (53,231,108) (1,827,618) (11,396,807)  
Net cash provided by operating activities from discontinued operations 324,095 211,195 623,520  
Net cash used in operating activities (52,907,013) (1,616,423) (10,773,287)  
Cash flows from investing activities        
Purchases of property, plant and equipment (4,686)   (13,297)  
Purchases of intangible assets (1,363) (82,195) (43,124)  
Short-term deposits (2,772,430)      
Advances to a third party (107,817)      
Prepayment for investment in a subsidiary (9,241,432)      
Net cash used in investing activities from continuing operations (12,127,728) (82,195) (56,421)  
Net cash used in investing activities from discontinued operations (130,492) (165,045) (38,484)  
Net cash used in investing activities (12,258,220) (247,240) (94,905)  
Cash flows from financing activities        
Gross proceeds from capital contribution   428,100    
Gross proceeds from bank acceptance notes payable   3,139,400    
Repayment of bank acceptance notes payable (3,388,525)      
Payments of deferred financing costs     (716,318)  
Gross proceeds from issuance of convertible note     7,500,000  
Net proceeds from stock issuance 126,010,538      
Proceeds from warrant exercised for cash 19,050      
Borrowings from bank loans 2,310,358 570,800    
Repayments of bank loans (628,931)      
Repayment of advances from related parties 2,147,199 938,071 87,800  
Proceeds from advances from related parties 489,997      
Net cash provided by financing activities from continuing operations 122,665,288 3,200,229 6,695,882  
Net cash (used by) provided by financing activities from discontinued operations (252,488) 1,416 (639,842)  
Net cash provided by financing activities 122,412,800 3,201,645 6,056,040  
Effect of exchange rate changes on cash and restricted cash (150,204) 73,354 40,802  
Net increase (decrease) in cash and restricted cash 57,097,363 1,411,336 (4,771,350)  
Cash and restricted cash, end of year 59,262,514 2,165,151 753,815 $ 5,525,165
Less: Cash from discontinued operations (10,610) (66,245) (16,437) (71,938)
Cash and restricted cash from continuing operations 2,165,151 753,815 5,525,165  
Reconciliation of cash and restricted cash        
Cash 481,906 118,688 4,853,227  
Restricted cash 1,617,000 618,690 600,000  
Cash and restricted cash from continuing operations 59,251,904 2,098,906 737,378 5,453,227
Cash from discontinued operations 10,610 66,245 16,437 71,938
Cash and restricted cash, beginning of year 2,165,151 753,815 5,525,165  
Cash and restricted cash, end of year 59,262,514 2,165,151 753,815 $ 5,525,165
Supplemental disclosure information:        
Income taxes paid 22,100 29,771 13,777  
Interest paid 116,700 87,249 118,237  
Non-cash financing activities        
Right of use assets obtained in exchange for operating lease obligations $ 593,457 827,118    
Conversion of notes to nil, 7,927,846 and 657,858 shares of common stock, respectively   4,580,289 1,950,092  
Accrued interest for convertible notes   $ 135,867 1,087,774  
Repayment of convertible notes by a related party on behalf of the Company     $ 2,617,882