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          Joint effort needed to clear the air
          

          By John Zeng | China Daily | Updated:  2013-03-04 07:51
 



          



          

          

          

          


          


          Joint effort needed to clear the air
          


          Just 5.7 percent of cars now on the road meet China IV or V emission standards. Li Shengli / For China Daily
          
          		

          
          

          

          

          


          Old cars, diesels currently are the biggest offenders
          


          

          Joint effort needed to clear the air
          

          

          


          


          


          
 
 



          


          

          



          


          

          

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