4 ms·
KN94 is the Korean standard. They made their own because the need for a standard arose because of the dust that comes from China. Not sure what KN95 is.
by hatsunearu 6y ago
KN94 is the Korean standard. They made their own because the need for a standard arose because of the dust that comes from China. Not sure what KN95 is.
- taejo 6y agoKF94 is a Korean standard. KN95 is a Chinese standard.