Profile: Shanghai Longain Industry Co., Ltd is a manufacturer of plastic pipes and fittings. We are an ISO 9001:2000 & ISO 14001 certified company. PPR pipe is an updated UPVC water supply pipe, aluminum-plastic pipe, PE pipe, PE-X pipe, and PE-RT pipe. Because it uses random copolymerization technology, polypropylene's strength and high-temperature resistance are guaranteed, thus becoming the main force of water pipe materials.