KN95
Conforms to the KN95 mask level in the Chinese GB standard GB2626, can filter non-oily (such as smog) particles, Filtration efficiency up to 95%.
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Conforms to the KN95 mask level in the Chinese GB standard GB2626, can filter non-oily (such as smog) particles, Filtration efficiency up to 95%.
Need more information on KN95