1. Hnav tsis kam: txhua leej txhua tus paub tias kuv yuav tsis hais ntxiv, nws yog ib qho ntawm cov kev ntsuas zoo ntawm cov ntaub ntawv refractory.
2. Thermal conductivity: Nyob rau hauv cov xwm txheej ntawm chav tsev kub gradient, tus nqi ntawm tshav kub ntws los ntawm chav tsev cheeb tsam ntawm cov khoom muaj feem xyuam rau lub porosity.
3. Kev cuam tshuam tsis zoo: Tsis tas yuav hais, qhov cuam tshuam tsis zoo yog qhov zoo thiab kev pabcuam lub neej ntev.
4. Slag tsis kam: muaj peev xwm tiv taus qhov yaig ntawm slag ntawm qhov kub thiab txias yam tsis muaj kev puas tsuaj.
