<a href="http://www.snxamedical.com/fac....e-mask/disposable-fa target="_self">Disposable face masks </a>are made of more than three layers of 28g non-woven fabrics; The bridge of the nose is made of environment-friendly all plastic strip, which does not contain any metal. It is equipped with breathable and comfortable. It is especially suitable for electronic factories and daily life. Disposable mask (medical surgical mask) can prevent respiratory tract infection to a certain extent, but can not prevent haze.