... is high polymer aggregate or fiber glass added catechin, photocatalyst, cold catalyst, active carbon, vitamin C, aromatics, ... or air filter mediaAdopt high efficiency paper filter element, catechin, anti-sensitive, vitamin C, aromatics, active carbon, photocatalyst, ... , no sensitive reaction. Application:1). Central air conditioner, air HFPA purifier, air cleaner, auto cabin, Fragrance machine etc.2 ...