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Warrants (Details) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Warrants [Line Items]    
Exercise price (USD/share)  
Stock options [Member]    
Warrants [Line Items]    
Market price per share (USD/share) 0.69 $ 0.39
Exercise price (USD/share) $ 2.20 $ 2.20
Risk free rate 0.35% 1.81%
Dividend yield 0.00% 0.00%
Expected term/Contractual life (years) 5 years 9 months 18 days 6 years 3 months 19 days
Expected volatility 334.28% 279.93%