Qhov tsis txaus ntseeg ntawm qhov cub hluav taws xob
1) Yuav tsum nce tus nqi ntawm cov cuab yeej xa hluav taws xob.
2) Cov nqi zog siab.
3) Thaum cov cua sov tiv thaiv kub tshaj li ntawm 1000 ° C, qhov khoom siv refractory yuav raug hluav taws xob, yog li nws yuav tsum tau them sai sai rau qhov teeb meem rwb thaiv tsev.