IDonsen yasungulwa ngo-1996, ekwiNINGBO apho kukho isixeko sezibuko samazwe ngamazwe esiphucukileyo nesintle. Njengoko sinamava angaphezu kweminyaka engama-20 kweli candelo, singomnye wabavelisi abaziingcali kakhulu ekuveliseni imibhobho yeplastiki yokubonelela ngamanzi kunye neenkqubo zokunkcenkceshela.

Iimveliso zethu eziphambili ziipayipi zePP-R kunye nezixhobo, izixhobo zoxinzelelo lwePP, iipayipi zeC-PVC kunye nezixhobo, iipayipi zeU-PVC kunye nezixhobo, iipayipi zePE kunye nezixhobo, iipayipi zokufudumeza umgangatho zePE-RT, iimold zeplastiki kunye nazo zonke iintlobo zeevalvu zeplastiki. Imizekelo: ivalvu yePVC, ivalvu yePPR, ivalvu yeC-PVC, ivalvu yeBRASS.