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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basis of Presentation and Principles of Consolidation (Details) - USD ($)
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Current assets:      
Cash and cash equivalents $ 14,319,234 $ 10,467,357  
Restricted cash 659,779 2,140,016  
Accounts receivable, net 815,325 1,733,306  
Bank acceptance receivable 2,585,886 11,722,096  
Inventories, net 8,879,486 12,495,831  
Advances to suppliers, net 1,215,105 1,380,925  
Other current assets 1,559,174 425,622  
TOTAL CURRENT ASSETS 30,033,989 40,365,153  
Property and equipment, net 10,184,029 9,119,502  
Intangible assets, net 1,726,928 1,927,933  
Long term investment 617,570 639,466  
Right of use assets-lease 86,584 118,154  
Deferred tax assets 212,876 427,120  
TOTAL ASSETS 64,526,617 75,353,263  
Current liabilities:      
Bank loans 140,578    
Accounts payable 5,289,481 6,643,691  
Advance from customers 556,418 2,467,296  
Advance from customers - related parties 0 17,318  
Bank notes payable 1,531,649 7,867,018  
Deferred government grants - current 121,542 351,567  
Taxes payable 815,811 305,305  
Operating lease liabilities, current 23,859 55,847  
Accrued expenses and other payables 701,263 466,838  
TOTAL CURRENT LIABILITIES 9,180,601 18,174,880  
Operating lease liabilities, long term 72,537 106,180  
Deferred government grants - noncurrent 309,943 403,745  
TOTAL LIABILITIES 9,563,081 18,684,805  
Total revenues 64,855,025 57,099,884 $ 50,033,200
Income from operations 1,560,559 3,363,277 5,805,349
Net income attributable to ordinary shareholders 1,076,693 3,152,868 5,063,710
Net cash provided by operating activities 12,654,188 345,034 5,076,014
Net cash used in investing activities (3,258,953) (24,200,032) (375,592)
Net cash provided by (used in) financing activities (5,937,529) 23,993,338 2,140,503
Effect of exchange rate on cash (1,086,067) 601,903 431,765
Net increase in cash and cash equivalents 2,371,640 740,243 7,272,690
VIE and its subsidiaries      
Current assets:      
Cash and cash equivalents 10,027,168 4,161,582  
Restricted cash 659,779 2,140,016  
Accounts receivable, net 815,022 1,733,306  
Bank acceptance receivable 2,585,886 11,722,096  
Inventories, net 8,879,486 12,495,831  
Advances to suppliers, net 1,214,951 1,380,757  
Other current assets 1,493,304 423,331  
TOTAL CURRENT ASSETS 25,675,596 34,056,919  
Property and equipment, net 9,361,862 9,041,995  
Intangible assets, net 1,726,928 1,927,933  
Long term investment 617,570 639,466  
Other long-term assets 172,911 188,913  
Right of use assets-lease 86,584 118,154  
Deferred tax assets 212,876 427,172  
TOTAL ASSETS 37,854,327 46,400,552  
Current liabilities:      
Bank loans 140,578    
Accounts payable 5,266,571 6,642,625  
Advance from customers 556,418 2,467,296  
Advance from customers - related parties   17,318  
Bank notes payable 1,531,649 7,867,018  
Deferred government grants - current 121,542 351,567  
Taxes payable 825,301 371,325  
Operating lease liabilities, current 23,859 55,847  
Accrued expenses and other payables 701,263 466,188  
TOTAL CURRENT LIABILITIES 9,167,181 18,239,184  
Operating lease liabilities, long term 72,537 106,180  
Deferred government grants - noncurrent 309,943 403,745  
TOTAL LIABILITIES 9,549,661 18,749,109  
Total revenues 64,468,807 57,049,381 46,731,913
Income from operations 2,502,014 2,370,647 4,840,614
Net income attributable to ordinary shareholders 2,752,212 2,857,492 4,936,357
Net cash provided by operating activities 12,901,270 2,122,539 4,131,468
Net cash used in investing activities (1,153,972) (1,781,618) (5,648,762)
Net cash provided by (used in) financing activities (5,937,529) 123,697 2,140,503
Effect of exchange rate on cash (1,018,698) 343,759 275,566
Net increase in cash and cash equivalents $ 4,791,071 $ 808,377 $ 898,775