Under the national goals of "carbon peaking" and "carbon neutrality", improving energy efficiency is a serious challenge faced by all electricity-related industries. As the power source of electrical appliances and various other machinery, motors are not only widely used in various industries, but also large consumers of electricity. According to statistics, the electricity consumption of the motor accounts for about 42%~50% of the total electricity consumption, the electricity consumption of the three-phase asynchronous motor accounts for about 90% of the total electricity consumption of the motor, and the motor of 37kW and below accounts for 50% of the total electricity consumption of the motor. Setting a reasonable limit value of motor energy efficiency will not only help China achieve the "dual carbon" goal as scheduled, but also promote the energy efficiency upgrade of motor productsEC motor is an electronic commutation motor. It is an integrated drive and control motor composed of a permanent magnet synchronous motor and a special controller. It has high efficiency and can basically reach the energy efficiency level of IE4 or IE5; EC motor is still an intelligent motors which can realize precise parameter control and status output, and can also be connected to the dedicated industrial Internet of Things IoT through the corresponding communication protocol, so as to realize remote intelligent monitoringEC motor is also a variable speed motor, especially in low speed use, more efficient, low power consumption, low noise, long life; widely used in intelligent ventilation, animal husbandry ventilation, speed regulation water pump, cooling water tower and other air conditioning industriesThe high speed vibrating blade cutter is widely used for cutting flexible fabrics such as corrugated cardboard, carbon fiber, leather, PVC, glass fiber, fiber cotton, prepreg, aramid, ceramic fiber, XPE material, wire loop, silicone, rubber, acrylic, KT board and so on. The vibrating knife cutting machine has fast cutting speed and high precision, which can solve production problems such as customization of small and medium batches of special-shaped cutting products