aluminium oxide power,A white crystalline power,aluminium oxideis obtained by calcining aluminum hydroxide. Although there are many variations of alumina crystals, the one that is the stablest and most used is α-alumina. It has high melting point, is thermally stable, has diamond hardness. Moreover,aluminium oxide has high electric resistance and is stable against alids and alikalis. Used as raw materials for aluminous refractory, ceramic product, sparking plugs and grinding material. Customers choose the products according chemical composition and physical properties