Photocatalyst Filter: Nano-Tio2 was deposited on the surface of filter in various material, that has better absorption than activated carbon. Nano-Tio2 visible-light-induced photocatalysis may decompose deleterious gas such as formaldehyde, benzene, ammonia, nicotinism, etc., and sterilize air which may contain germs suspended therin, deodorize air. Light accelerant is harmless to the human body, and last permanently. Photocatalyst Filter ismainly used in sterilization of air machine. Odor decomposing rate is more than 96%. Bactericidal rate is more than 99%. The size, the material and the air flow rate of filter could be adjusted according to customer's requirement. Quality level is under RoHS reported by SGS