Ua hoʻokumu ʻia ʻo ZHEJIANG DONSEN ENVIRONMENTAL TECHNOLOGY CO., LTD i ka makahiki 1996, aia ma NINBGO, Kina, he ʻoihana no nā paipu PVC a me nā mea hoʻopili, nā paipu PPR a me nā mea hoʻopili, nā mea hoʻopili PP, nā paipu CPVC a me nā mea hoʻopili, nā paipu PE a me nā mea hoʻopili, nā mea hoʻopili wikiwiki PPR, nā mea hoʻopili paipu plastik keleawe PPR, nā ʻano valve plastik āpau (PVC VALVES, PPR VALVES, PP VALVES etc.), ʻōmole etc. ʻO DONSEN kekahi o nā mea hana me ka ʻōnaehana huahana piha loa ma ke kahua o nā paipu plastik ma Kina. Hoʻohana nui ʻia kā mākou huahana i ka lako wai kīwila, ka hoʻokahe hale, ka lako wai a me ka hoʻomehana, ka hoʻonaninani home a me ka hoʻoinu māla, ka hoʻoinu mahiʻai a me nā mahina ʻai ʻē aʻe.
I mea e hoʻohana ai ka ʻohana i ke ʻano o ke kaiapuni o nā huahana paipu, ua hoʻohana ʻo DONSEN i nā mea maka kiʻekiʻe i lawe ʻia mai e hana
nā huahana, i mea e hōʻoia ai i ka maikaʻi o ka huahana, hoʻolauna ʻo DONSEN i ka laina hana paipu composite alumini paia holomua honua, e like me ka laina hana fiberglass, ka keleawe PPR a me ka laina hana plastic, pālua ka laina hana kūpono a pēlā aku.
I kēia manawa, ua hala ka ʻoihana i ka palapala hōʻoia CE o ka ʻAhahui ʻEulopa. Palapala hōʻoia NSF ma USA; Palapala hōʻoia SABS ma ʻApelika Hema; Palapala hōʻoia GOST ma Rusia; Palapala hōʻoia WRAS ma ʻEnelani, palapala hōʻoia SIAA ma Iapana; Palapala hōʻoia SKZ a Kelemania a me nā palapala hōʻoia ʻē aʻe.
Hoʻouna ʻia aku kā mākou huahana i nā ʻāina he 100 a ʻoi ma ka honua, e like me Rusia, Ukraine, Palani, Italia, Mekiko, Hikina Waena, ʻEulopa, ʻAmelika Hema, ʻĀsia, a pēlā aku. I kēia manawa, aia nā ʻelele o nā huahana moʻo hōʻailona DONSEN ma nā ʻāina āpau o ka honua. E lawelawe ʻo DONSEN iā ʻoe me ka naʻau piha, a ke ʻimi nei i nā ʻelele.