Disposable vertical non-woven respirator Features: 1) With multi-layered nonpoisonous, non-allergic, non-stimulating materials. 2) Adjust the bandage strip and the built-in bandage foam cushion to adapt to various face-shapes with comfortable sealing. Special design and the breath is more comfortable. 4) With exhalation valve for breathing easier and reduce hot air build up, more comfortable. Application: Widely use in textile, coal, iron and steel, automobile manufacturing, wood processing, agriculture, gardening, food, metal cutting, mold manufacturing and ect.. Do not: 1. Use the respirator under Oxygen concentraton(below 19% volume) 2. Use the respirators when the hazardous substances is not known or when the consistence of the hazardous substance will soon injure the body; 3. Fire-fighting.