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OTHER NON-CURRENT ASSETS (Tables)
 12 Months Ended
Dec. 31, 2017
OTHER NON-CURRENT ASSETS  
Schedule of other non-current assets

 

 

As of December 31,

 

 

 

2016

 

2017

 

 

 

 

 

 

 

Rental deposits

 
2,914

 
3,110

 

 

 

 

 

 

 

 

 
2,914

 
3,110