How To Distinguish The Frontal Or The Back Of Masks

The mask is a protective tool that plays a filtering role. The use of the mask plays a very good role in protecting people. Generally, a multi-layer filtering device is used in the mask to filter out the polluted gases and tiny particles in the air, So as to better protect people's respiratory tract and make people's body safer and healthier, which also makes the use of masks more important. Want to prevent new coronavirus infection pneumonia, it is useful to choose disposable medical masks and medical protective masks!

The method of distinguishing the front and back of the mask is by the metal strip. Usually the color of the medical mask is the same, which makes it difficult for people to distinguish. The general metal strip is above and the side that protrudes outward is the outside, and the opposite side is Inside, it can also be distinguished by creases. The upward side of the crease is the inner surface, and vice versa is the outer surface.