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2. Summary of Significant Accounting Policies (Details Narrative) - USD ($)
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Noncontrolling interest percentage 51.80% 48.20%
Noncontrolling interest $ 921,010 $ 1,001,128
Decrease in noncontrolling interest (80,118)  
Allowance for doubtful accounts 0 0
Capitalized product development costs 100,000 360,248
Product development costs incurred 291,386 368,226
Research and development costs 3,372,016 3,445,124
Advertising costs 16,488 22,539
Warranty expense 0 0
Shipping and handling expense 814,926 1,452,456
Inventory reserve 295,502 143,410
Goodwill impairment 0 0
Amortization expense 488,049 471,235
Products purchased 24,874,119 39,347,065
Accounts payable $ 7,609,585 $ 12,862,564
Sales [Member] | Customer 1 [Member]    
Concentration of credit risk 54.00% 69.00%
Sales [Member] | Customer 2 [Member]    
Concentration of credit risk 21.00% 23.00%
Sales [Member] | Customer 3 [Member]    
Concentration of credit risk 11.00%  
Sales [Member] | Verizon, Sprint, Anydata [Member]    
Concentration of credit risk More than 10%  
Sales [Member] | Verizon and Sprint [Member]    
Concentration of credit risk More than 10%  
Accounts Receivable [Member] | Customer 1 [Member]    
Concentration of credit risk 48.00% 68.00%
Accounts Receivable [Member] | Customer 2 [Member]    
Concentration of credit risk 36.00% 13.00%
Accounts Receivable [Member] | Customer 3 [Member]    
Concentration of credit risk 9.00%  
Purchases [Member] | Supplier Concentration Risk [Member]    
Concentration of credit risk 87.00% 94.00%
Products purchased $ 19,507,215 $ 37,628,062
Accounts payable $ 5,834,383 $ 10,783,241