... places.2. Composition and Characteristic MF27 Full-Eyepiece Gas Mask components are full-eyepiece gas face piece, the cartridge (double), the ... full-eyepiece gas mask designed of the full-eyepiece type. Its components are faceblank,full-eyepiece lens and five harness which can ... , so it can be against the different kind of toxic. Its life time is long, resistance is small, and it is ...