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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, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Segment reporting [Line Items]        
Net Revenues $ 28,493 ¥ 198,363 ¥ 190,898 ¥ 330,977
CHINA        
Segment reporting [Line Items]        
Net Revenues 23,581 164,167 149,548 302,304
SINGAPORE        
Segment reporting [Line Items]        
Net Revenues $ 4,912 ¥ 34,196 ¥ 41,350 ¥ 28,673