... performance in high temperature is moderate. High purity calcined aluminaHighlight:1.It's hard to melt in acid ... resisting,wear-resisting,corrosion-resisting products,such as high alumina refractory products,strong ceramics, high grade abrasive,electromagnetic equipments, ... packing, for your reference. If you are interested in our products, feel free to contact me. High-purity calcined alumina powder