A high-quality air conditioner filter can absorb powder tip particles, relieve respiratory pain, reduce irritation to allergy sufferers, make driving more comfortable, and protect the air conditioning cooling system. Please note that there are two types of air-conditioning filter elements, one without activated carbon and the other with activated carbon (consult before purchasing). The air-conditioning filter element containing activated carbon not only has the above functions, but also absorbs a lot of odors, etc. effect. The air-conditioning filter element is generally replaced every 10,000 kilometers.