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          For rail inspectors, tiny flaws are big trouble
          
      
          
      
          
        
          By  Yang Jun in Guiyang | 
          chinadaily.com.cn |
          Updated: 2021-03-03 16:38
        
        
          
          
          
          
        

      
          


      
          
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   Railway staff use high speed railway detector to inspect railway tracks in Kaili city, Guizhou province. [Photo by Miao Guoqiang/For chinadaily.com.cn] 
 
           

           

        
      
          
      
      
      
          
        
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