сертификат ce kn95 маска анти-загрязнение pm2. 5 рот маска пыли респиратор моющиеся маски хлопок унисекс n95 маска рот челнок ffp2 маски

main ingredient:non-woven fabric,meltblown fabric,hot air cotton. filtration efficiency:non-oily particulate matter filtration rate more than 95%. product storage:storage temperature : 20 degrees-38 degrees,storage temperature less than 83%.its should be stored in a well-ventilated,dark and dry enviroment and away from fire sources and pollutants. validity:three years.