Wearing the KN95 mask has a filtration efficiency of more than 95% for particles with an aerodynamic diameter ≥ 0.3 µm. The aerodynamic diameter of airborne bacteria and fungal spores mainly varies between 0.7-10µm, which is also within its protection range.

Therefore, this type of mask can be used for respiratory protection of certain particulate matter, such as dust produced during grinding, cleaning and processing of minerals, flour and certain other materials, and is also suitable for liquid or non-oily non-oily respirators produced by spraying. Particles of harmful volatile gases.

It can effectively filter and purify the inhaled abnormal smell (except toxic gas), and help reduce the exposure level of certain inhalable microbial particles (such as mold, anthrax bacillus, tuberculosis bacillus, etc.), but it cannot eliminate contact infection, illness or death risks of.