Our factory is specialized in plastic check valves, based on many years of experience in the field, and brought in ISO900: 2000 production management system, using strong technical force, advanced manufacturing processes and equipments, strict testing means, professional production philosophy, we have accessed to ACS, WRAS certifications and passed RoHS test of the SGS certificate. We will supply all series of plastic check valves with high quality to customers in our country and out the country.