Alumina (aluminum oxide) or aluminium oxide, is a chemical compound of aluminium and oxygen. The chemical formula is Al2O3 is lookin nabaeptharong square, Lake gulls ngamo Paix gateway า (Octahedral), eight have a hardness according to mos gate lathao with 9, which has a secondary strength from the diamond, because of the properties of which are c high strength . Thickness sure ... either There is tons of akan abrasion resistance made treats, and organization asan, chemical resistant, made to onsung Pedro nachonwon electric good drivers at high temperature. There is a high fire-resistant and colorless color can enamel on the gem. Allow gem to withstand scratches.
การแปล กรุณารอสักครู่..
