... cold catalyst, active carbon, vitamin C, aromatics, anti-sensitive or catalyzer. It’s used in the purification industrial ... filter mediaAdopt high efficiency paper filter element, catechin, anti-sensitive, vitamin C, aromatics, active carbon, photocatalyst, cold ... times3). Safety: non-toxic, harmless, no sensitive reaction. Application:1). Central air conditioner, air HFPA purifier, air cleaner, auto ...