News

HEPA KN95 Filter

Performance of the nose mask

I wear HEPA nose mask for 2.5 hours to package the activated carbon bag. There is dust during the package. All the dust is brocked on filter.  There is no...

Performance of the nose mask

I wear HEPA nose mask for 2.5 hours to package the activated carbon bag. There is dust during the package. All the dust is brocked on filter.  There is no...