"Haipai Si" is an emerging scientific and technological entity enterprise that produces and sells metal products such as thin-walled and thick-walled stainless steel water pipes, stainless steel double clamps, welded and grooved pipe fittings for sanitary use. Widely used in cold and hot water, direct drinking water, heating, gas, food, pharmacy, medical gas transportation, chemical industry and municipal domestic water and other engineering projects, won unanimous praise from users. answer