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Concentrations of Risk (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Revenues $ 163,300 $ 128,002
Customer A [Member]    
Revenues 72,912  
Accounts receivable 73,082  
Customer B [Member]    
Revenues 61,188 58,299
Accounts receivable 3,969 14,886
Customer C [Member]    
Revenues 26,436 52,523
Accounts receivable $ 0 $ 39,300