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CONCENTRATION OF RISKS (Narrative) (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 17, 2014 | Apr. 16, 2012
Foreign currency exchange rate risk |  |  |  |  |
Daily floating range of RMB trading prices against the U.S. dollar (as a percent) |  |  |  | 2.00% |
Appreciation and depreciation of the RMB against US dollar (as a percent) | 7.20% | 4.40% | 2.50% |  |
Minimum [Member] |  |  |  |  |
Foreign currency exchange rate risk |  |  |  |  |
Daily floating range of RMB trading prices against the U.S. dollar (as a percent) |  |  |  |  | 0.50%
Maximum [Member] |  |  |  |  |
Foreign currency exchange rate risk |  |  |  |  |
Daily floating range of RMB trading prices against the U.S. dollar (as a percent) |  |  |  |  | 1.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 28.00% | 25.00% | 23.00% |  |
Supplier Concentration Risk [Member] | Cost of Goods, Total [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 72.00% | 94.00% | 86.00% |  |
Number of entities comprising risk benchmark | 5 | 5 | 5 |  |

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