06-02-2019
Particle mask for more safety and comfort
One of the features of the new Aura 9300+Gen3 particle mask from 3M is the 3M Cool Flow comfort valve. According to the manufacturer, it opens 37 percent easier than the second generation valve. This allows 36 percent more exhaled air to escape. More
https://www.ist-surfacetechnology.com/product-news/particle-mask-for-more-safety-and-comfort-2264109.html
