ZHEJIANG DONSEN ENVIRONMENTAL TECHNOLOGY CO., LTD na faavaeina i le 1996, o loʻo i NINBGO, Saina, lea e faʻapolofesa mo paipa PVC & mea faʻapipiʻi, paipa PPR ma mea faʻapipiʻi, PP faʻapipiʻi mea, paipa CPVC ma mea faʻapipiʻi, paipa PE ma mea faʻapipiʻi, PPR vave tuleia paipa palasitika, vaʻa palasitika PPRES, palasitika palasitika PPRES. PPR VALVES, PP VALVES ma isi), mold etc. DONSEN o se tasi o le au gaosi oloa sili ona atoatoa faiga i totonu o le fanua o paipa palasitika i China.Our oloa e masani ona faʻaaogaina i le vaʻaia o le va o tagata, fale alavai, vai ma faʻamafanafanaina, teuteuga fale ma togalaau faʻatoʻaga, faʻatoʻaga faʻatoʻaga ma isi fanua.
Ina ia mafai ona faʻaoga e le aiga i luga o le siosiomaga tulaga lelei o oloa paipa, DONSEN faʻaulufaleina mai le tulaga maualuga mea mata e gaosia.
oloa, ina ia mautinoa le lelei o oloa, DONSEN faalauiloa faava o malo alumini alumini tu'ufa'atasi laina gaosiga paipa, e pei o le fiberglass gaosiga laina, PPR apamemea ma palasitika gaosiga laina, faaluaina le lelei gaosiga laina ma isi.
I le taimi nei, ua pasia e le kamupani le CE certification a le Iuni a Europa. NSF tusipasi i Amerika; Tusipasi SABS i Aferika i Saute; GOST tusipasi i Rusia; WRAS tusipasi i Egelani, SIAA tusipasi i Iapani; Siamani SKZ tusipasi ma isi tusipasi.
O a tatou oloa e auina atu i fafo i le sili atu i le 100 atunuu i le lalolagi, e pei o Rusia, Iukureini, Farani, Italia, Mekisiko, Sasaʻe Tutotonu, Europa, Amerika i Saute, Asia, ma isi. DONSEN o le a auauna atu ia te oe ma le loto atoa, ma saili mo sui.