Dawb corundum abrasive, tseem hu ua dawb txhuas oxide, muaj kev ruaj khov zoo thermal, tiv taus kub siab tshaj 1750 degrees, purity siab, zoo self-sharpening, muaj peev xwm sib tsoo muaj zog, qis calorific nqi, ua haujlwm siab thiab acid-base corrosion tsis kam. Nws tau ua pov thawj nws tus kheej hauv ntau ...
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