Alumina ceramics is a kind of material with alumina (AL2O3) as the main body and used for thick film integrated circuit. Alumina ceramics has good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic is needed for washing. Alumina ceramics is a widely used ceramic. Because of the superior performance of alumina ceramics, the application of modern society has become more and more widely used to meet the needs of daily use and special performance.