> Cov roj hmab npog, uas yog tsim los ntawm cov khoom siv tshuaj tiv thaiv, muaj cov tshuaj tiv thaiv zoo corrosiveness thiab lub cev zoo.
> Nws yog tsim tshwj xeeb los lis cov ntaub ntawv uas yuav yaj, nthuav los yog corrode txoj siv.
> Nws yog tsim rau conveying cov ntaub ntawv nrog tshuaj corrosiveness nyob rau hauv chemical factories, tshuaj chiv factories, ntawv mills, mining kev lag luam, thiab lwm yam.