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          Heavy smog continues to choke Chinese cities
          

          


          chinadaily.com.cn    |     2017-01-04 07:55
    



 


          


          

          


          



          

          

          


          


          
Heavy smog continues to choke Chinese cities

          


          


          Professor Liu Yong from Beijing University of Chemical Technology shows the smog particles on used masks through an electron microscope on Jan 3, 2017. [Photo/Chinanews.com]
          
          		

          
          

          

          


          

          

          



          

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