1.SGS,ISO,for different machines 2.SR,EPDM,SBR,CR,NBR,FPM etc. 3.UV,FR,oil proof,shock proof etc. 4.ODM ... bag outer:carton) or customerizedcertification:ISO9001 ,SGSwe are looking forware for your visit to our factory. Rubber seal/gasketMaterialEPDM,NBR,SR ... .Stable rubber material cooperation,make sure good quality rubber material for production3.SGS,ISO certificate,make the test at a regular ...