The N95 and the KN95 are very similar but their standards are different. We can simply say
that the KN95 are the Chinese standards for masks where N95 are the US standards. Each
country has its own standards in terms of safety masks; mask standards for Europe (FFP2),
Australia (P2), Korea (KMOEL), and Japan (DS).N95s and KN95s are both rated to capture
95% of particles, although only KN95s are required to pass fit tests. N95s have slightly
stronger requirements for breath ability.