Face masks protect against viruses

face masks protect against viruses: Mask is used by professional health fiber within two layers, non-woven filter among an additional level of on the 99.999% germ-proof amounted to dissolve gush above filter cloth welded by ultrasonic, nose place use environmental protection resin bar, do not contain any metal, pendant through steam, comfortable. Filtering effect B.F.E as high as 99.9%