Raws li kev tsim cov thawj peb-txheej magnesium oxide board, ib txheej ntxiv ntawm huab cua tiv thaiv zoo nkauj granular khoom ntxiv rau saum npoo.Cov txheej txheem no tseem ua tiav los ntawm cov tshuaj tiv thaiv ntuj tsim uas sib xyaw ua ke nrog cov khoom zoo nkauj nrog MgO, tsim ib qho chaw cohesive.Tag nrho cov qauv ntawm lub rooj tsavxwm tseem yog ib qho tseem ceeb thaum muab cov teebmeem tshwj xeeb zoo nkauj.Nws hloov qhov xav tau rau cov khoom siv pleev xim rau saum npoo xws li cov xim pob zeb tiag tiag, marble, vuas, thiab lwm yam khoom siv sab nrauv.Qhov tseem ceeb tshaj, nws txo cov sij hawm xav tau rau kev tuav tes.Thaum cov phab ntsa sab nrauv raug teeb tsa, tsis tas yuav muaj kev pleev xim ntxiv lossis qhuav-dai ntawm cov khoom siv zoo nkauj.