1. Alumina ceramic sticks have superior mechanical strength, fracture toughness≥5.6Mpa.m3/2. 2. Alumina ceramic sticks are non-reactive and non-toxic, making them ideal for use in medical and food processing applications. 3. Alumina ceramic sticks are corrosion-resistant, which makes them a goodness selection for use in undefined environments. 4. Alumina ceramic sticks are electrically insulative, volume resistivity>1014Ohm/cm2 and can be used as an operational physical phenomenon insulator. 5. High temperature resistance, 1600℃ in long use,1800℃ in short use (Al2O3≥99%).