Medical Face Mask

a single-use medical product that covers the mouth and nose of the wearer and serves a barrier for direct transmission of infectious particles from the mask wearer to other people around. A modern mask commonly consists of a filter layer (MELT BLOWN), which is settled between the two outer layers of non-woven material (spunbond), plus a flexible aluminum insert that maintains a snug fit mask in the shape of a nose [1]. The mask is fixed upon the face with elastic ear loops.

Face Mask KN95

In compliance with GB2626 standard requirements, KN type face masks are classified according to their filtering efficiency for non-oily particles. The KN95 face mask refers to a filtration efficiency of over 95% for non-oily particles with size larger than 0.075 microns, but the diameter of the new coronavirus pneumonia virus is about from 0.1 to 0.12 microns. This means wearing a KN95 face mask can effectively prevent the virus penetration.

Respiratory mask N95

Respiratory mask N95 A respiratory face mask perhaps is the easiest way to limit the negative effects of smog on a human-being. Respirators consist of three layers: the external layer protects against biological fluids, the medium one serves as a filter that isolates respiratory organs from 95% harmful particles diametered up to 0.3 microns, and the internal layer protects from dampness. Respiratory masks of N95 type also effectively protect against particles with a diameter of 2.5 microns and even less. These respiratory masks have FFP2 protection level.