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8. CONCENTRATIONS (Details - Concentration sales)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Sep. 30, 2020
Sales Revenue, Net [Member] | Distribution [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 82.00% 85.00% 80.00% 84.00%  
Sales Revenue, Net [Member] | Distribution [Member] | Customer A [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 28.00% 37.00% 28.00% 35.00%  
Sales Revenue, Net [Member] | Distribution [Member] | Customer B [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 19.00% 20.00% 18.00% 17.00%  
Sales Revenue, Net [Member] | Distribution [Member] | Customer C [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 28.00% 16.00% 25.00% 24.00%  
Sales Revenue, Net [Member] | Distribution [Member] | Customer D [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 7.00% 12.00% 9.00% 8.00%  
Sales Revenue, Net [Member] | Design [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 46.00% 60.00% 47.00% 57.00%  
Sales Revenue, Net [Member] | Design [Member] | Customer 1 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 6.00% 21.00% 9.00% 15.00%  
Sales Revenue, Net [Member] | Design [Member] | Customer 2 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 9.00% 16.00% 11.00% 13.00%  
Sales Revenue, Net [Member] | Design [Member] | Customer 3 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 10.00% 14.00% 9.00% 18.00%  
Sales Revenue, Net [Member] | Design [Member] | Customer 4 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 20.00% 0.00% 17.00% 0.00%  
Sales Revenue, Net [Member] | Design [Member] | Customer 5 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk 1.00% 9.00% 1.00% 11.00%  
Accounts Receivable [Member] | Distribution [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     85.00%   82.00%
Accounts Receivable [Member] | Distribution [Member] | Customer A [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     23.00%   23.00%
Accounts Receivable [Member] | Distribution [Member] | Customer B [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     30.00%   22.00%
Accounts Receivable [Member] | Distribution [Member] | Customer C [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     19.00%   20.00%
Accounts Receivable [Member] | Distribution [Member] | Customer D [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     13.00%   17.00%
Accounts Receivable [Member] | Design [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     45.00%   59.00%
Accounts Receivable [Member] | Design [Member] | Customer 1 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     20.00%   24.00%
Accounts Receivable [Member] | Design [Member] | Customer 3 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     11.00%   5.00%
Accounts Receivable [Member] | Design [Member] | Customer 4 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     12.00%   6.00%
Accounts Receivable [Member] | Design [Member] | Customer 5 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     2.00%   10.00%
Accounts Receivable [Member] | Design [Member] | Customer 6 [Member]          
Revenue, Major Customer [Line Items]          
Concentration Risk     0.00%   14.00%