Dust and chemical protection The face-to-face contact is made of fine silicone. Good material is a dust-proof mask and chemical filter replacement that is easy to use Double pipe mask Ventilated than general masks Can change the filter cartridge immediately one at a time while in use Passed the standards of leading industrial countries such as Australia, South Korea, Japan, America, Europe
3M 7502 Half Facepiece Respirator Medium Advance silicone material for increased comfort and greater durability Proprietary 3M CoolFlow valve helps makes breathing easier Dual-mode head harness adjusts easily for either standard or drop-down mode Exhalation valve cover directs exhaled breath and moisture downward to reduce fogging
