Polyvinyl chloride ceilings, lossis " PVC qab nthab ," raws li nws feem ntau hu ua, yog ib hom kev sib luag ntawm cov qab nthab niaj hnub no, tab sis nws kuj muaj kev sib cav ntau. PVC yog cov khoom siv yas dav dav uas yog tus thawj coj hauv ntau cov ntaub ntawv sib txawv, los ntawm cov khoom ua si thiab cov cuab yeej mus rau cov khoom siv tsim thiab lwm yam.
