1.disposable medical surgical face mask 2.made of 2ply non woven +2ply filter paper 3.with ISO:13485, EN, CE certifications 1.disposable medical surgical face mask2.made of 2ply non woven +2ply filter paper3.with ISO:13485, EN, CE certificationThis kind of face mask is used to filter the particles in the air, and help to prevent the droplets, liquid, and blood, bacteria filter efficiency 95%.