Brown corundum abrasive, haholo-holo e entsoeng ka Al2O3, e na le boima bo bohareng, boima bo boholo, likaroloana tse bohale, theko e tlaase, 'me e loketse ho sebetsana le litšepe tse nang le matla a phahameng a thata.Microcrystalline corundum abrasive le black corundum abrasive ke tse nkiloeng ho tsona.
Nako ea poso: Mar-01-2023