The haze weather again, a lot of buddies are put on the mask, but not necessarily in the mask on the correct specification, then you know the right way of the mask?
First is to understand whether disposable masks, masks, masks or other, are positive and negative, take disposable masks, deep color is positive, positive outward.
The face color of the disposable mask is relatively shallow, and the inside face is opposite, that is to say, the light color side is close to our face. In addition, it should be noted that one end of the metal strip is the top of the mask, do not bring upside down.
Clear the mask of positive and negative, above and below, from the right on the mask is not far away. Clean hands, to ensure that the mask color side in shallow (negative), one end of the metal strip must upward (above), the ends of the rope hung on the ears, see here, you think it will take the mask, done?
The answer is definitely negative. The most important step is to press the metal strips on both sides of the nose tightly with both hands, so that the upper end of the mask is close to the nasal bridge. Then pull the mask down so that the mask does not fold and cover your nose and mouth better.