It is used for the protection of oily particles and organic steam odor, and the protection of particles generated in dry construction, mine casting, wood processing, electronics, pharmacy, material handling and polishing operations. The plastic nose clip ensures the good tightness of the protective mask at the nose bridge. The internal sponge nose pad is designed to reduce the pressure on the nose bridge and make it more comfortable. The unique cold flow exhalation valve can reduce the exhalatio