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2. Summary of Significant Accounting Policies (Details - Restricted Cash) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Accounting Policies [Abstract]        
Cash and cash equivalents $ 630,109 $ 282,736    
Restricted cash 269,399 272,397    
Total $ 899,508 $ 555,133 $ 708,626 $ 110,543