99.6% Alumina ceramic substrates are cur rently the preferred materials for hybrid integrated circuits and are widely used in high-performance   electronic   devices,   especially   in   situations   where   outstanding   mechanical,   electrical,   thermal performance and corrosion resistance are required.

It is mainly applied in numerous fields such as mobile communication, satellite TV, broadcasting communication, radar, and satellite positioning systems. It is used as a dielectric resonator, filter, dielectric antenna, dielectric guided wave circuit, etc. in modern communication.