Product name: Carbon Mask

1. Made from melt blown polypropylene, applicable to general workplace.
2. Large-size comfortable active carbon high-filtration respirator with breathing valve boasts unidirectional exhalation function of "only out".
3. Adapts for high-temperature, high-humidity and fuggy sites, specially good for manual workers.
4. Soundly obstruct low-toxicity gas, filter organic gas, sour odor and fine dust.