Donsen was established in 1996, mainly produces PP-R pipe fittings and plastic molds. Nowadays Donsen enlarges production range, except PP-R pipe &fitting, newly increases PP compression fitting and CPVC pipe &fitting, U-PVC pipe &fitting, PE-RT floor heating pipe fittings and all kind of plastic ball valve. Donsen is professional pipe &fitting supplier. After 10 years experience and professional technology, guarantee quality requirement, 3 path of control quality process, get ISO9001, ISO14001, Wras, Gost and Nsf certification. Donsen owns mould factory and professional research and development group. To provide customers with convenient, comprehensive, professional pipe series of products is our mission and goals.