Kukhiqizwa i-PVC engakanani unyaka ngamunye?
Context:I-Polyvinyl chloride (ngenye indlela: poly ((vinyl chloride), colloquial: polyvinyl, noma nje i-vinyl; esifushanisiwe: i-PVC) i-polymer yesithathu ekhiqizwa kakhulu emhlabeni epulasitiki (ngemuva kwe-polyethylene ne-polypropylene). Kukhiqizwa amathani angaba yizigidi ezingu-40 e-PVC unyaka ngamunye.
Unyaka ngamunye kukhiqizwa amathani ayizigidi ezingu-40 e-PVC.