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

15. Trade and Other Receivables (Details - Receivables)

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15. Trade and Other Receivables (Details - Receivables) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Trade And Other Receivables Details Abstract        
Trade receivables, net $ 53,753 $ 136,224 $ 154,642  
Other receivables (taxes receivable, unbilled revenue and maintenance charges) 265,264 325,089 652,724  
Less: bad debt provision (89,886) (54,303) (50,426) $ (488,978)
Total trade and other receivables, net current portion 229,131 407,010 756,940  
Other receivables - taxes receivables 3,176 0 143,137  
Total trade and other receivables, net non-current portion $ 3,176 $ 0 $ 143,137