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2. Summary of Significant Accounting Policies (Details Narrative) - USD ($)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Noncontrolling interest percentage 35.80% 48.20%
Noncontrolling interest $ 489,046 $ 921,010
Increase (decrease) in noncontrolling interest (431,964)  
Net income (loss) of subsidiary (511,622)  
Allowance for doubtful accounts 0 0
Capitalized product development costs 465,352 100,000
Product development costs incurred 465,352 291,386
Research and development costs 2,955,581 3,372,016
Advertising costs 6,105 16,488
Warranty expense 0 0
Shipping and handling expense 4,891,365 4,511,568
Inventory reserve 553,281 295,502
Goodwill impairment 0 0
Amortization expense 422,183 488,049
Products purchased 30,729,411 24,874,119
Accounts payable 5,672,514 7,609,585
Shipping and Handling [Member]    
Shipping and handling expense $ 1,140,229 $ 814,926
Sales [Member] | Transferred At Point In Time [Member]    
Concentration of credit risk 99.00%  
Sales [Member] | Transferred Over Time [Member]    
Concentration of credit risk 1.00%  
Sales [Member] | Customer 1 [Member]    
Concentration of credit risk 57.00% 54.00%
Sales [Member] | Customer 2 [Member]    
Concentration of credit risk 24.00% 21.00%
Sales [Member] | Customer 3 [Member]    
Concentration of credit risk   11.00%
Sales [Member] | Verizon and Sprint [Member]    
Concentration of credit risk More than 10%  
Sales [Member] | Verizon, Sprint, Anydata [Member]    
Concentration of credit risk   More than 10%
Accounts Receivable [Member] | Customer 1 [Member]    
Concentration of credit risk 56.00% 48.00%
Accounts Receivable [Member] | Customer 2 [Member]    
Concentration of credit risk 26.00% 36.00%
Accounts Receivable [Member] | Customer 3 [Member]    
Concentration of credit risk   9.00%
Purchases [Member] | Supplier Concentration Risk [Member]    
Concentration of credit risk 97.00% 87.00%
Products purchased $ 28,858,171 $ 19,507,215
Accounts payable $ 4,401,501 $ 5,834,383