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ACCOUNTS RECEIVABLE (Details)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
USD ($)
Dec. 31, 2012
CNY
Dec. 31, 2011
CNY
Dec. 31, 2010
CNY
ACCOUNTS RECEIVABLE [Abstract]        
Accounts receivable $ 34,253 213,398 260,246  
Allowance for doubtful accounts (496) (3,091) (16,057)  
Accounts receivable, net 33,757 210,307 244,189  
Movement in allowance for doubtful accounts:        
Balance at beginning of the year 2,577 16,057 1,431 2,000
Provisions for the year       15,377 1,431
Written back during the year (2,081) (12,966) (751) (2,000)
Balance at end of the year 496 3,091 16,057 1,431
Accounts receivable used to secure bank borrowings 10,505 65,450 21,677  
Secured debt $ 41,902 261,051 30,599