The transmission belt is the power generated by rotating the motor or engine of the prime mover, and is transmitted to the mechanical equipment through the belt by the pulley, so it is also called the power belt. It is the core component of electromechanical equipment, with a wide variety of applications and a wide range of uses. Giant motors ranging from large to several thousand kilowatts, small to less than one kilowatt of micro-motors, and even precision machinery including home appliances, computers, robots, etc. are inseparable from the transmission belt. Its biggest feature is that it can be freely variable speed, far and near transmission, simple structure and convenient replacement. Therefore, from the original machinery to the modern automatic equipment, there are transmission belts. The products have undergone many evolutions and the technology has matured.