Donsen has Long historyProfessional and very good at Pipes fittings and Valves production CompanyDonsen Company established in 2003located in NINGBO which is a developed and beautiful international port city. we are one of the most professional manufacturer specialized in produce plastic pipeline for water supply and irrigation system. In order to enable millions of families to use environmentally friendly and high-quality pipeline products,Donsen adopt all imported high-quality raw materials to produce products In order to ensure product quality, the introduction of a full set of precision testing equipment, as well as integrated feeding system, while using mechanical operation instead of manual, so that safer, more precise and more professional. At present, the company has passed the EU CE certification; NSF certification in the US; SABS certification in South Africa; GOST certification in Russia; WRAS certification in England, SIAA certification in Japan; German SKZ cer