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SEGMENT REPORTING (Schdeule of Net Revenue by Country based upon Sales Location that Predominately represents Customer Location) (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2016
CNY (¥)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
CNY (¥)
Dec. 31, 2014
CNY (¥)
Segment reporting [Line Items]        
Net Revenues ¥ 455,042 $ 65,540 ¥ 616,485 ¥ 606,883
PRC [Member]        
Segment reporting [Line Items]        
Net Revenues 443,601 63,892 597,746 606,883
Singapore [Member]        
Segment reporting [Line Items]        
Net Revenues ¥ 11,441 $ 1,648 ¥ 18,739