Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

24. Derivative Financial Liabilities (Details - Assumptions)

v3.19.1
24. Derivative Financial Liabilities (Details - Assumptions) - Level 2 of fair value hierarchy [Member] - $ / shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of financial liabilities [line items]      
Average stock price volatility 92.29% 80.08% 100.60%
Bottom of range [Member]      
Disclosure of financial liabilities [line items]      
Conversion price $ 0.50 $ 1.30 $ 1.40
Stock price $ 0.50 $ 1.30 $ 1.80
Risk-free interest rate 1.78% 0.82% 0.44%
Expected term (in years) 7 days 4 days 4 days
Top of range [Member]      
Disclosure of financial liabilities [line items]      
Conversion price $ 1.02 $ 1.80 $ 3.55
Stock price $ 1.02 $ 1.98 $ 3.55
Risk-free interest rate 2.72% 1.90% 0.92%
Expected term (in years) 1 year 1 year 1 year