Gas Mask EP-9800-E,full face. 1.wear-proof,anti-foggy,impact-resistant 2. ... ,wild vision 3.activated carbon tank Gas Mask EPM-9800-E,full faceDetailed Product Description1.wear-proof,anti-foggy,impact-resistant ... ,wild vision 3.activated carbon tankrespiratory gas masks EPM-9800-E:Application and Feature:when the ambient air is contaminated with ... place:less than 185 cm3 6 Visual field:more than 35°