what`s the difference between kn95 and n95 face mask

1. KN95 mask is actually a mask conforming to the GB2626 standard of China.

2. N95 mask is certified by American NIOSH, and the standard is non-oily particulate filtration efficiency ≥ 95%.

3. KN95 and N95 masks should be worn correctly.

4. If KN95 or N95 mask is normally used, one can be replaced within 4 hours.

5. Special circumstances require timely replacement.