10 20 40 анти мутность рм2,5 бумаги рот маска утилизации сменная pad слои рот одноразовые маски для лица фильтра колодки крышка health care

10 20 40 anti haze pm2.5 paper mouth mask disposal replaceable pad layers mouth cover health care features: 1.the first layer: high efficient filter cloth filter the dust of micron. 2.the second layer: meltblown cloth to filter industrial pollutants, automobile exhaust, second-hand smoke pollen allergies. 3.the third layer: high efficient filter cloth filter benzene and a smaller function of filtering dust microns. 4.the fourth layer: activated carbon cloth filter density, sma.