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SIGNIFICANT ACCOUNTING POLICIES (Details - Concentration Risk) - Revenues - Customer concentration - customer | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Certain Risks and Concentrations |  |  |
Number of major customers | 2 | 2 | 2
Customer one |  |  |
Certain Risks and Concentrations |  |  |
Concentration risk (as a percent) | 13.00% | 12.00% | 13.00%
Customer two |  |  |
Certain Risks and Concentrations |  |  |
Concentration risk (as a percent) | 15.00% | 11.00% | 11.00%

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