Harmonic drive uses a structured controllable elastic deformation to realize the transmission of mechanical motion. Harmonic reducer has a series of advantages such as large transmission ratio, simple structure, small size, light weight and high precision. Harmonic gear transmission technology and devices are widely used in radar communications, industrial robots, precision machine tools, instrumentation, textile printing, precision optical equipment, medical equipment and other fields. The following harmonic reducer manufacturers share the transmission characteristics of the harmonic reducer.