ZHEJIANG DONSEN ENVIRONMENTAL TECHNOLOGY CO., LTD unakhazikitsidwa mu 1996, yomwe ili ku NINBGO, China, amene ndi akatswiri PVC mipope & zovekera, PPR chitoliro ndi zovekera, PP psinjika zovekera, CPVC chitoliro ndi zovekera, mipope PE ndi zovekera, PPR mwamsanga kukankhira chitoliro PVC mtundu pulasitiki zotsekera VALVES, PPR mavavu, PP mavavu etc.), nkhungu etc. DONSEN ndi mmodzi wa opanga ndi dongosolo lathunthu mankhwala m'munda wa mapaipi pulasitiki mu China.Our mankhwala chimagwiritsidwa ntchito mu boma madzi, nyumba ngalande, madzi ndi Kutentha, kukongoletsa kunyumba ndi ulimi wothirira munda, ulimi ulimi wothirira ndi minda ina.
Pofuna kupanga banja ntchito pa khalidwe chilengedwe cha mankhwala chitoliro, DONSEN kutengera kunja mkulu khalidwe zopangira kubala.
mankhwala, pofuna kuonetsetsa khalidwe mankhwala, DONSEN limayambitsa mayiko apamwamba khoma zotayidwa gulu kupanga chitoliro mzere kupanga chitoliro, monga fiberglass kupanga mzere, PPR mkuwa ndi pulasitiki mzere kupanga, pawiri mzere kupanga bwino etc.
Pakadali pano, kampaniyo yadutsa chiphaso cha CE ku European Union. Chitsimikizo cha NSF ku USA; Satifiketi ya SABS ku South Africa; Chitsimikizo cha GOST ku Russia; WRAS certification ku England, SIAA certification ku Japan; Chitsimikizo cha SKZ yaku Germany ndi ziphaso zina.
Zogulitsa zathu zimatumizidwa kumayiko opitilira 100 padziko lapansi, monga Russia, Ukraine, France, Italy, Mexico, Middle East, Europe, South America, Asia, ndi zina. DONSEN adzakutumikirani ndi mtima wonse, ndikuyang'ana othandizira.