About KN95 masks:
KN95 mask can isolate smaller particles, and fit tighter to the face, it is not easy to leak air from the periphery, and the filtration efficiency of particulate matter can reach 95% under standard conditions.

The kn95 mask is not a disposable mask.
In this special case (resource shortage), it can be reused.
But there are conditions:
1. When n95 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. However, masks cannot be reused if people go to the come into contact with an infected person, or are suspected to be infected. 

Features:
1.Products are standard masks Suitable for many places and crowds Avoid breathing dust or germs to protect human health.
2. Please Note: US (42CFR84 standard) N95 = European Union (EN149 standard) FFP2 = Australia (Australia, New Zealand AS1716 standard) P2 = China KN95 = Korea KF94 Please be kindly noted,the listed product is produced and distributed abroad and subject to the laws of its country of origin.
Good Quality: with FDA AND CE Certifications
Material: Spunbond non-woven Fabric with melt-blown, non-woven fabric
Feature: Breathable/Dust-proof