N95 is an American standard, which means that the protection rate for ultrafine dust is greater than 95%.
FFP3 is a European standard, referring to the protection rate of fried powder dust greater than 99%.
But in some countries, the implementation of the national standard GB2626-2006 "self-priming filter anti-particulate respirator" standard, has KN100, KN95 and KN90 levels.
It is indeed KN100 dustproof mask to protect the ultra-fine dust. The protection rate can be more than 99.97%.