Disposable Surgical Face MaskBfe 99% From Factory

China Hot Selling Disposable Surgical Face Mask Bfe 99%

Surgical Face Mask, Diaposable Face Mask, Protective Mask manufacturer / supplier in China, offering Hot Selling Disposable Surgical Face Mask Bfe 99%, Hot Selling Manufacture Disposible Masks, Hot Selling KN95 Face Mask with CE Certificate 1000PCS in Stock and so on.ASTM Mask Protection Standards Surgical & Procedure The filtration efficiency and protective ability of a face mask is compromised when the mask becomes wet, torn or dislodged. Generally speaking, the higher protection value of a mask the longer it will maintain filtration; however, there is no set rule for how long a mask should be worn as it depends on humidity levels, respiration rate, nasal discharge, talking, etc.