The implementation standard of medical protective masks is GB19083-2010; The implementation standard of medical surgical masks is YY 0469-2011; The implementation standard of disposable medical masks is YY/T0969—20 13. The product registration number will be marked on the outer packaging of medical masks subject to the licensing supervision of medical devices according to regulations. The numbering rule is usually: X machine mark+registration year +264+ number.

Mask:

Mask is a kind of sanitary product, which is usually worn on the nose and mouth to filter the air entering the nose and mouth to block harmful gases, smells, droplets, viruses and other substances. It is made of gauze or paper. The dust barrier efficiency of the mask is based on its barrier efficiency to fine dust, especially to breathable dust below 2.5 microns. Because dust with this particle size can directly enter alveoli, it has the greatest impact on human health. Gauze mask, its dustproof principle is mechanical filtration, that is, when dust collides with gauze, some large particles of dust are blocked in emery cloth through layers of barriers. For some fine dust, especially dust smaller than 2.5 microns, it will enter the respiratory system through the mesh of gauze. Dust mask, its filter material is made of activated carbon fiber felt pad or non-woven fabric, and breathable dust smaller than 2.5 microns is blocked in the process of passing through this filter material, which plays a role in filtering air.