The disposable face mask is made of more than three layers of non-woven fabrics of 28 grams; the bridge of the nose is made of environmentally friendly all-plastic strips, does not contain any metal, and has a breathable strap, which is comfortable and especially suitable for electronic factories and daily use. Disposable masks (medical surgical masks) can prevent respiratory infections to a certain extent, but cannot prevent haze.
http://www.beeda-teyouda.com/disposable-face-mask/
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