kn95 пылезащитная противотуманная и дышащая сторона 95% фильтрация защитные одноразовые маски для рта n95 ffp2 особенности

please be kindly noted,the listed product is produced and distributed abroad and subject to the laws of its country of origin. about n95 masks: n95 mask can isolate smaller particles, and fit tighter to the face, it is not easy to leak air from the periphery, and the filtration efficiency of particulate matter can reach 95% under standard conditions. the n95 mask is not a disposable mask. in this special case (resource shortage), it can be reused. but there are conditions: 1. when n95 rec...