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, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Trade And Other Receivables Details - Receivables        
Trade receivables $ 136,224 $ 154,642 $ 686,745  
Less: bad debt provision (54,303) (50,426) (488,978) $ (521,111)
Trade receivables, net 81,921 104,216 197,767  
Other receivables (taxes receivable, unbilled revenue and maintenance charges) 325,089 652,724 645,112  
Total trade and other receivables, net current portion 407,010 756,940 842,879  
Other receivables - taxes receivables 0 143,137 0  
Total trade and other receivables, net non-current portion $ 0 $ 143,137 $ 0