Rubber metal parts for valve 1.Certificate: ISO9001:2008 2.Material: NBR, NR, EPDM, metal, etc 3.Different sizes Product NameRubber metal partsCertificateISO9001:2008Country of OriginChinaAdvantagea ... a wide range of rubber products. We located in Xinjiazhuang Industry Zone, Tongji Office , Jimo , Qingdao City, China. We mainly produce ...