Definition of KN95 mask

Respiratory protective equipment GB2626-2006 standard promulgated by the State Administration of Quality Supervision, Inspection and Quarantine and the National Standardization Management Committee, units that produce dust masks must obtain production and operation licenses in accordance with law, and the production technical specifications of all dust masks must meet the corresponding standards. The standard stipulates the production and technical specifications of respiratory protection products, and has strict requirements on the material, structure, appearance, performance, filtration efficiency (dust resistance), respiratory resistance, detection method, product identification, and packaging of dust masks. The material of the dust mask must be non-irritating and allergenic to the skin, and the filter material is not harmful to the human body; the structure of the dust mask should be convenient to use; The filtration efficiency of oily particles must be greater than 95%. Among them, the value of 95% is not the average value, but the minimum value, so the average value of actual products is mostly set above 99%.