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
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
