Dab tsi yog whiteboard markers siv rau?

Whiteboard markers yog qhov zoo tagnrho rau kev sau ntawv ntawm cov ntawv dawb, tshwj xeeb yog coated boards thiab du nto. Cov cwj mem zoo muaj nyob hauv peb cov khoom lag luam tsis smudge, yooj yim rau kev tshem tawm thiab cov txiaj ntsig tau pom meej meej txawm tias nyob deb.