KN95 is a Chinese standard mask, derived from the Chinese national standard GB 2626-2006 "Respiratory protective equipment self-priming filter anti-particulate respirator", this standard is a mandatory national standard in China, proposed by the State Administration of Work Safety The personal protective equipment standardization technical committee (SAC / TC 112) is under the jurisdiction. KN95 mask is a kind of mask with filtering efficiency of particulate matter in our country.
KN95 masks and N95 masks are actually the same in terms of particle filtration efficiency.