1) Professional manufacturer 2) Size:25,38,50,76,100mm 3) ISO 9001:2008 4) PE,PP,RPP,PVC,CPVC,PVDF 1. Introduction: The Plastic Conjugate Ring is made from heat resistant and chemical corrosion resistant plastics, including polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) and polyvinylidene fluoride (PVDF). It ...