Activated carbon cabin filter can remove air pollutants (such as odor, corrosive gas, toxic gas), effectively improve indoor air quality (IAQ), and protect people’s health. The main reason is that activated carbon has a very strong adsorption capacity for some harmful inorganic gases of organic substances, can effectively remove the odor, and is suitable for various air conditioning and ventilation systems. When the dirty air from outside entering the vehicle and passing through the actived carbon cabin air filter, the active carbon will use physical adsorption and chemical adsorption to adsorb these organic gases on the surface, so as to achieve the function of purified air.