With high electrical conductivity and low resistivity, high stability and durability, high levels of integration, the fourth semiconductor material which includes  Gallium Oxide Substrate β-Ga2O3 Wafer, Aluminum nitride Substrate AlN wafer and CVD Diamond substrate have vast potential for applications in energy storage, optoelectronic devices, microelectronic devices, sensors and other high-temperature, high-pressure, and high-humidity conditions.