... 2).ISO,SGS,RoHS approval 3).non-toxic, harmless Vacuum cleaner air HEPA filter screenHEPA series filter materialAdopt high efficiency ... methanthiol, hydrogen sulfide etc, but also has the superstrong power to kill stubborn bacteria and fungus. Product Property:1).Broad ... Application:1). Central air conditioner, air HFPA purifier, air cleaner, Fragrance machine etc.2). Medical nano silver masks, exposure ...