Nrhiav ib lub chaw tsim khoom zoo, cov khoom siv refractory?
Peb tau tsom mus rau kev hnav-resistant ceramics, silicon carbide, ceramic-fiber-raws li refractories, refractory bricks thiab castables, xa high-kev ua tau zoo zog-txuag thermal rwb thaiv tsev daws teeb meem rau cov neeg muas zaub thoob ntiaj teb.