1. Protection against trace organic gases and odors2. Protection of particles produced during the processing of
grinding, cleaning, sawing and bagging, or in the processing of
ore, coal, iron ore, flour, metal, wood, pollen and certain other
substances. Liquid or non-oily particulate matter produced by
spraying that does not emit oily aerosols or vapors. Such as
casting, laboratory, agriculture, chemical, primer, cleaning, etc.
The kn95 mask is not a disposable mask. In this special case
(resource shortage), it can be reused. But there are conditions:
1. When kn95 receives contamination such as saliva, blood, tears
and other body fluids, it must be replaced
2. The user obviously feels that the breathing resistance is
greater than before and must be replaced
3. Masks are damaged and must be replaced
4. It is recommended to replace it after using it 4 times.