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Short-Term Line of Credit (Details Narrative) - USD ($)
1 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Line of credit $ 250,000 $ 250,000
New Agreement [Member] | Harris Bank [Member]    
Aggregate amount of revolving line of credit $ 3,000,000  
Eligible percentage of domestic accounts receivable 75.00%  
Percentage of foreign accounts receivable of inventory 40.00%  
Annual interest rate of loan 5.50%