1. Alumina ceramic plates is a high-quality ceramic plate made of 99.3% aluminum oxide ceramic. 2. Alumina ceramic plates have high mechanical strength, and the bending strength of sintered aluminum oxide ceramic products can reach 250MPa. 3. Alumina ceramic plates high electrical resistivity and good electrical insulation performance. 4. Alumina ceramic plates high hardness, Mohs hardness is 9. 5. Alumina ceramic plates high melting point and corrosion resistance. 6. Alumina ceramic plates excellent chemical stability.