Divided by use: driving motors and control motors. Driving motors are divided into: motors for power tools (including drilling, polishing, grinding, grooving, cutting, reaming and other tools), home appliances (including washing machines, electric fans, refrigerators, air conditioners, tape recorders, video recorders, and video players) , vacuum cleaners, cameras, hair dryers, electric shavers, etc.) and other general small mechanical equipment (including various small machine tools, small machinery, medical equipment, electronic instruments, etc.). Control motors are further divided into: stepper motors and servo motors.