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

15. Trade and Other Receivables (Details - Bad debt provision)

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15. Trade and Other Receivables (Details - Bad debt provision) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Trade And Other Receivables Details 1Abstract      
Beginning balance $ 54,303 $ 50,426 $ 488,978
Provided during the year 38,138 40,022 0
Receivable written off during the year as uncollectible 0 (30,846) (35,612)
Unused amount reversed 0 (12,323) (389,116)
Currency exchange rate and other adjustment (2,555) 7,024 (13,824)
Ending balance $ 89,886 $ 54,303 $ 50,426