2шт kn95 респираторная анти-грипп и pm2. 5 лицо пыль крыша рот анти-инфекционная защитная маска

2pcs kn95 respiratory mask anti-virus and pm2.5 face dust roof mouth anti-infection safety mask features: kn95 level respiratory protection,filtering efficiency up to 95%,filters almost 95% of bacteria , pm 2.5 pollution ash.the production of our masks strictly follows gb2626-2006 (chinas kn95 standard).the technical requirements and test methods of gb2626-2006 (chinas kn95 standard) are basically consistent with 42 cfr 84 (us standard). activated carbon layer inside can effectively absorb...