A colorful show of innovation at third CIIE

        

      

      

        
          
          chinadaily.com.cn |
          Updated: 2020-11-05 19:49
          
          
          
          
        


        
      

      

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   A man tries out a device that tests the protective effect of a mask at the third China International Import Expo in Shanghai, Nov 5, 2020. [Photo by Wang Zhuangfei/chinadaily.com.cn] 
 
 

 

        


        
        
      

        
          
          
        

        
          
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