PVA 2699 thiab PVA 179 yog cov khoom polyvinyl alcohol zoo. Txawm li cas los xij, lawv txawv hauv cov khoom uas ua rau lawv pom tau ntau hom kev siv hauv ntau hom lag luam. PVA 2699, piv txwv li, muaj qhov hnyav molecular siab uas ua rau nws muaj peev xwm tsim cov yeeb yaj kiab ruaj khov thiab yog li ntawd, nws yog qhov zoo rau cov kev siv ntim muaj zog. Hauv lwm sab, PVA 179 muaj qhov dissolvability zoo dua hauv dej thiab yog qhov ntau dua thiab yog li ntawd, nws yog polyvinyl alcohol zoo rau cov adhesives, textile thiab ntau lwm yam kev siv. Kev paub txog cov ntsiab lus ntawm cov khoom no pab cov tuam txhab txhim kho lawv cov txheej txheem thiab ua tiav cov txiaj ntsig xav tau.