'Grey hair' engineering team restarts old production line
    
        
    
      
    
      
    
        
          By Yang Cheng in Tianjin | 
          chinadaily.com.cn |
          Updated: 2020-02-24 16:22
          
          
          
          
        


        
      
    
      
    
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   The "grey hair commando" team at the workshop. [Photo by Liu Yuanyuan and Wu Tianqi/For chinadaily.com.cn] 
 
     

     

        
    

        
        
      
    
        
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