[50Pcs] Pink Face Mask Disposable Non Medical Surgical 3-Ply Earloop Mouth Cover
Each box has 50 pcs, not individually packaged.
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This Standard Specifies the terms and definitions, technical requirements,test methods,inspection rules,packaging,Storage and transportation requirements of daily protective masks.This Standard applies to protective masks wore in the daily life to filter out particulate matters in the air pollution environment. This Standard does not apply to respiratory protection products used in hypoxic environment,underwater operations,escaping,fire protection,medical and industrial dust prevention and other special industries,nor for respiratory protection products for infants and children.The particle protective performance of mask is divided from high to low into Grade A, Grade B, Grade C and Grade D ,Respirators of all levels can reduce the concentration of inhaled particulate matter (PM2s) to S 75ug /m3 in the corresponding air pollution environment