Foldable devices to flying cars: Tech reshapes future

        

      

      

        
          
          chinadaily.com.cn |
          Updated: 2019-01-03 13:04
          
          
          
          
        


        
      

      

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   The world's longest 3D-printed concrete bridge, which is now open to foot traffic in a park in Shanghai, is seen on Dec 23, 2018. [Photo/IC] 
 
 


        


        
        
      

        
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