Carbon cabin air filter, a particulate cabin air filter, is composed of non-woven filter material and activated carbon, can also prevent 0.01-2μm particles (gas, bacteria, fungi, odor) from penetrating into the cabin, to ensure the best comfort. This is achieved by adding a layer of activated carbon to the filter medium to form an effective “adsorption” process, which makes the gas condense on the surface. Carbon helps filter pollutants and other harmful airborne substances, absorbing odors and harmful gases such as benzene or ozone.