What is the difference between N95 and KN95 Masks?

The main difference of N95 and KN95 mask are the standard.The N95 mask is from USA,and the KN95 Mask are refers to a standard in China.
Both of them are efficient at filtering out at least 95% protection against all particles that are greater than 0.3 µm in diameter (bacteria, viruses, pollution particles, fine particles, dust, smog, pollen, etc.)
And the difference are KN95 masks are foldable and flat packed whereas the N95 Masks are not.
To be certified as a KN95 mask, the Chinese government requires the manufacturer to run mask fit tests on people with an < 8% leakage. The N95 mask standard does not require manufacturers to run fit tests. N95 masks have slightly stricter requirements for pressure drop while inhaling and pressure drop while exhaling. This makes N95 masks slightly more breathable than KN95 masks. 
So,we as manufacture and supplier of the KN95 with 4/5 protective filter layers and a filtering rate of 95% with anti-dust and anti-pollution protection. They are best suited for shipping and their flat design allows for more masks per box.
Q: Why should you wear a mask?

1.Any type of mask,even basic cloth face coverings ,are a simple way to slow or stop the spread of the virus. They reduce viral transmission if you are wearing correctly. If everyone wears them and wear them correctly over their nose and mouth, it could stop and prevent 70% of viral transmission.So, we have to s washing our hands before putting on your face mask and making sure it covers your nose and mouth once in place. It should also fit snugly against your face and remain there until you leave a public setting.
2.You’re protecting others from illness.
Mask -wearing is most effective way to protect yourself from illness. Face masks combined with other preventive measures, such as getting vaccinated, frequent hand-washing and physical distancing, can help slow the spread of the virus.