高纯氧化铝具有化学稳定性好、熔点高、机械强度高、硬度高、导热性好、绝缘性高等性能。由改进后的拜耳工艺制造。

应用：蓝宝石，红宝石，工程陶瓷，陶瓷基底，喷涂材料，光电玻璃，半导体器件，绝缘体，电力设备等。

High purity alumina by its chemical stability, high melting point, high mechanical strength, high hardness, good thermal conductivity, high insulation and other properties. Manufactured by the improved Bayer process.
Application: Sapphire, ruby, engineering ceramics, ceramic substrate, spray material, photoelectric glass, semiconductor devices, insulators, electrical power devices and more.