PVC (ib lub npe rau Polyvinyl Chloride) yog cov khoom siv yas siv hauv cov kav dej.Nws yog ib qho ntawm tsib lub ntsiab yeeb nkab, lwm hom yog ABS (acrylonitrile butadiene styrene), tooj liab, galvanized steel, thiab PEX (cross-linked polyethylene).Cov kav dej PVC yog cov khoom siv sib zog, ua rau lawv yooj yim rau kev ua haujlwm ...
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