Brown corundum abrasive, makamaka wopangidwa ndi Al2O3, ali sing'anga kuuma, kulimba lalikulu, particles lakuthwa, mtengo wotsika, ndi oyenera pokonza zitsulo ndi mkulu kumakoka mphamvu.Microcrystalline corundum abrasive ndi black corundum abrasive ndizochokera kwawo.
Nthawi yotumiza: Mar-01-2023