Automotive motors that require the use of breathable membranes include window motors, wiper motors, sunroof motors, starter motors, and oil pump motors. As for the window motor, since the window motor is installed under the door glass, water is easily splashed on the motor when washing the car, so the waterproof requirements for the motor are relatively high. At present, most window motors adopt a fully sealed design. After the temperature rise of the motor during operation, it is easy to cause a pressure difference between the inside and the outside of the motor, causing the weakest seal to be damaged. At this time, the motor needs a ventilator to balance the internal and external pressure difference. The breathable membrane plays this role. It can balance the internal and external pressure difference through the gas, and prevent water and various oils from flowing into the motor. The motor truly meets the requirements of a fully sealed and waterproof design, which improves the reliability of the automotive motor. Suitable ventilation products for various automotive motors, including TPV respirators, adhesive-backed products and welding diaphragms.