I-ZHEJIANG DONSEN TEKNOLOJI YOKUSINGQONGILEYO CO., LTD yasekwa ngo-1996, e-NINBGO, e-China, eyingcali kwimibhobho ye-PVC kunye nokufakelwa, umbhobho wePPR kunye nokufakelwa, i-PP compression fittings, umbhobho we-CPVC kunye nokufakelwa, imibhobho ye-PE kunye nokufakelwa, i-PPR yofakelo olukhawulezayo lwe-PPR yeplastiki yofakelo lweplastiki Iivalve, iivalve zePPR, iivalve zePP njl.), ukungunda njl.
Ukuze wenze usapho lusetyenziswe kumgangatho wokusingqongileyo weemveliso zombhobho, i-DONSEN yamkele imathiriyeli ekrwada ephuma kumazwe angaphandle ukuvelisa.
iimveliso, ukwenzela ukuba kuqinisekiswe umgangatho wemveliso, i-DONSEN yazisa umgca wokuvelisa umbhobho we-aluminium owenziwe ngamazwe ngamazwe, njengomgca wokuvelisa i-fiberglass, i-PPR yobhedu kunye nomgca wokuvelisa iplastiki, kabini umgca wokuvelisa osebenzayo njl.
Okwangoku, inkampani iphumelele isiqinisekiso se-CE se-European Union. Isiqinisekiso se-NSF e-USA; isiqinisekiso se-SABS eMzantsi Afrika; Ukuqinisekiswa kweGOST eRashiya; Isiqinisekiso se-WRAS eNgilani, isatifikethi se-SIAA eJapan; Isatifikethi se-SKZ saseJamani kunye nesinye isiqinisekiso.
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