Annual report pursuant to Section 13 and 15(d)

Note 4 - Concentrations (Details Textual)

v3.21.2
Note 4 - Concentrations (Details Textual)
12 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Property, Plant and Equipment, Net, Ending Balance $ 4,997,658 $ 4,952,819
MEXICO    
Property, Plant and Equipment, Net, Ending Balance $ 1,768,837 $ 1,686,209
Revenue Benchmark [Member] | Customer Concentration Risk [Member]    
Number of Major Customers 2 2
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member]    
Concentration Risk, Percentage 28.00% 30.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Number of Major Customers 1 2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]    
Concentration Risk, Percentage   25.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Customer [Member]    
Concentration Risk, Percentage 17.00%