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6. Customer and Vendor Concentrations (Details Narrative)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Two Customers Percentage of Sales        
Percent concentration 83.00% 75.00% 82.00% 79.00%
Three Customers Percentage of Receivables        
Percent concentration     81.00% 78.00%
One Supplier Percentage of Purchased Inventory        
Percent concentration 93.00% 99.00% 96.00% 99.00%