... O ring is one of the main products in our factory, it is made from Nitrile(NBR), HNBR ,EPDM, ... , Valve accessories, Air-conditioner, Sanitary ware and so on.We have O ring tooling 2000sets in house, our products ... Acid resistance, Alcohol resistance, Aliphatic-solvent resistance and so on. Factory history8 yearsFactory area3700m2CertificateISO/TS16949Machines(20sets)Rubber mixer, Automatic slitting ...