Particle protection masks in 3m masks can provide effective protection against viruses, and the filtering efficiency of the masks should reach KN90/95/100, N90/95/100 or FFP1/2/3 standards. Ordinary medical surgical masks, the filtration efficiency should be greater than 30%, can also be used in the prevention of new coronavirus pneumonia.
Particle protection mask protection is better than single-use medical masks and medical surgical masks, medical personnel engaged in patient care, incident scene investigation, sampling and testing of disease control personnel, as well as hospital isolation area cleaning, security and other service personnel to take more stringent protective measures when engaged in the prevention and control of the epidemic.