On the basis of high-quality filter paper, PURE cabin filter adds activated carbon components. In addition to efficiently filtering dust, sand, pollen and various tiny solid particles in the air, it can also firmly adsorb harmful gases such as formaldehyde, benzene, and sulfur dioxide in the air. It will also absorb such as second-hand smoke smell, pet odor, and strange odors caused by food spoilage, thereby improving the air quality in the car.