The Difference Between N95, KN95 And FFP2 Masks - Topper
Mar 24, 2020·N95 is certified as the level of United States breathing apparatus, by the National Institute of Occupational Safety and Health (NIOSH). The N95 certified respirator has a filtration efficiency of not less than 95% of non-oily particles, and the mask must be marked "NIOSH" and "N95". KN95 is a respirator with the certification level that complies with China's mandatory standard GB 2626-2006.