Add Introduction：Zirconia is a material with high mechanical strength and fracture toughness at room temperature. Its coefficient of thermal expansion is similar to that of metals, and it is suitable for bonding with metal materials. Zirconia has relatively fine grains, which can achieve high roughness processing. It also has excellent biocompatibility and is widely used in the biomedical industry. Excellent hardness, wear resistance, and comfortable skin fit when used for wearable devices