The difference between kn95 and N95

2020-03-31 20:43:12 31

Kn95 is the standard set in Chinese standard gb2626-2006

Kn95 and N95 have the same protection effect, but different national standards have different names


Do you need a breathing valve

The breathing valve is a one-way valve

It's closed when you inhale

It's open when you exhale

Breathing out reduces resistance

But now it is in an extraordinary period. It is not recommended to take a breathing valve to avoid self illness and virus transmission~

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