The automobile industry is one of the fields where NdFeB magnets are widely used. In each car, generally 30 parts use permanent magnets. It is said that the number of micro-motors used in foreign luxury cars has reached 70, which is used to complete various control actions on the car. As the car develops toward miniaturization, light weight and high performance, the magnets used in the car Performance requirements are getting higher and higher, which will accelerate the development of NdFeB magnets, especially bonded NdFeB magnets.