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 ━━━ Davydenko won iso16949 certification  ━━━


 
 



 

 ━━━ISO14001 environment system certification ━━━










 

  ━━━Metal particles awarded patent ━━━


 
        
 
 

           ━━━Heyuan Municipal CPPCC come Davydenko research ━━━







 

 ━━━International cooperation to come visit Davydenko ━━━








 















 
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