Advanced technologies in spotlight at global trade fair
    
        
    
      
    
      
    
        
          
          chinadaily.com.cn |
          Updated: 2021-09-06 13:49
          
          
          
          
        


        
      
    
      
    
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   A visitor looks at the tunnel robot at the construction consulting and building services exhibition hall at the China International Fair for Trade in Services in Beijing, on Sept 3, 2021. [Photo/China News Service] 
 
     

     

        
    

        
        
      
    
        
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