Masks are not an ordinary commodity, it requires first-class quality control
N95 mask is a certified product of the National Institute of Occupational Safety and Health (NIOSH). The protection level is equivalent to medical masks and KN95 masks that meet Chinese standards, and FFP2 masks that meet European standards.
N95 is the certification level of the United States breathing apparatus, certified by the National Institute of Occupational Safety and Health (NIOSH). The N95 certified respirator has a filtration efficiency of not less than 95% for non-oily particulate matter, and the mask must be marked with “NIOSH” and “N95”;
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