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ACCOUNTS RECEIVABLE (Tables)
 12 Months Ended
Dec. 31, 2013
ACCOUNTS RECEIVABLE  
Schedule of accounts receivable

 

 
   2012   2013  
 
   RMB
   RMB
  

Accounts receivable

     55,948     66,155  

Less: Allowance for doubtful accounts

     (3,260 )   (3,347 )
           
​ ​ ​ ​ ​ ​ ​ ​

 

     52,688     62,808  
           
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
           
Schedule of movement of allowance for doubtful accounts

 

 
   2011   2012   2013  
 
   RMB
   RMB
   RMB
  

Balance at beginning of period

     1,965     2,022     3,260  

Additions

     801     1,575     789  

Write-offs

     (744 )   (337 )   (702 )
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Balance at end of period

     2,022     3,260     3,347  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​