Isiseko sobhedu se-PVC esigqunywe nge-PVC esongelweyo esongelwe ngokusongelwa ngentambo yolawulo sibekwe kwigumbi elikhulu lemagnethi, kwintambo, kumbhobho, wangcwatywa ngqo, waxhonywa, kwaye unokumelana nezihlandlo ezimiselweyo zoxinzelelo olukhulu.