KN95 Respirator yokhala ndi Breathing Valve ndi ya masks a N95 ndi omwe amasefa osachepera 95 peresenti ya tinthu tating'onoting'ono tamlengalenga. N95 ndi muyezo wokhazikitsidwa ndi National Institute for Occupational Safety and Health, kapena NIOSH. Masks omwe amadutsa mulingo uwu amatchedwa N95 masks.
Werengani zambiriTumizani Kufunsira