1. The alumina rods has strong hardness, second only to diamond in hardness. 2. Alumina rods have the advantages of wear resistance, corrosion resistance, and resistance to impacts, 3. Alumina rods are non-toxic and odorless, suitable for use as machine parts in the medical and food industries. 4. High temperature resistance, long-term use at 1600 ℃, short-term use at 1800 ℃. 5. Alumina rods have electrical insulation properties and can be used as insulating components for electronic experiments.