корабли сегодня ffaanti-dust дым открытых в помещении регулируемых многоразовых маска с рм2,5 активировать угольный фильтр сменного 2 mask p

ships today ffaanti-dust smoke outdoor indoor adjustable reusable mask with 2 mask pad for pm2.5.1.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.