Cov raj tooj liab ntawm kev lag luam feem ntau yog tooj dag thiab tooj liab. Cov ntsiab lus ntawm tooj liab raj tooj liab yog qis dua 70%, siab impurity cov ntsiab lus, siab hardness, feem ntau yog nyob rau hauv daim ntawv ntawm tuab-walled hlab rau ua handicrafts, threaded khoom thiab lwm yam ntaub ntawv nyob rau hauv kev ua lag luam;
Ntshav tooj liab raj tooj liab cov ntsiab lus ntawm 99.9% lossis ntau dua, cov khoom siv lub cev yog qhov tseem ceeb hauv: siab plasticity, ductility, yooj yim rau txheej txheem molding, zoo stability, yog ib tug sustainable kev loj hlob ntawm ntsuab tsev ntaub ntawv.
Txawm koj xav taucov kav dej tooj liab, tooj liab rods ,tooj liab daim hlau, peb muaj cov khoom thiab kev txawj ntse kom tau raws li koj xav tau.
