Industrial N95 masks can also protect against viruses, the so-called N95 is the standard of mask production. It is called KN95 in China, and N95 in foreign countries or internationally, which means that the protection ability of the mask is above 95%, that is, the defense ability of tiny particles of 0.3μm is above 95%, and the small particles of >0.3μm can be blocked outside the mask, and the small particles formed by viruses, bacteria and pathogenic microorganisms are generally >0.7μm in size, so the use of N95 industrial masks Or medical or not can be effective protection against viruses, its nothing special.