Brown corundum abrasive, inonyanya kuumbwa neAl2O3, ine kuomarara kwepakati, kuomarara kukuru, zvimedu zvinopinza, mutengo wakaderera, uye inokodzera kugadzira simbi dzine simba rakawanda.Microcrystalline corundum abrasive uye black corundum abrasive ndizvo zvinobva kwavari.
Nguva yekutumira: Mar-01-2023