There are three ways to distinguish between the front and back of white masks, which are thread distinction, metal bar distinction, and fabric distinction.

1, thread distinction

White mask positive and negative can be distinguished by thread. To see the threads on the outer wall of the mask, if there is a thread, it is toward the outside. And if there is no thread, it is worn facing inward.

2, metal bars

White masks can be distinguished by metal bars. Because the color of the white mask is the same on both sides, so when you wear it, you can distinguish the front and back by looking at the metal strip. If the upper side of the metal strip protrudes toward the outside, it is the outside, and the opposite is the inside.

3, fabric distinction

White mask positive and negative can be distinguished by the fabric. Can be based on the smoothness of the mask to see, the mask towards the outside part of the water-blocking function, more for the smooth side. The part facing inward, more choose for breathable material, and close to the skin, is conducive to breathing.

White mask wearing common sense

Washing hands before wearing a disposable mask, because there are often bacteria on the hands, you need to use soap or disinfectant hand sanitizer to clean, and to use flowing water to clean. The mask needs to be unfolded, before wearing the disposable mask unfold the mask so that the wrinkles unfold a bit so that it can be put on better.

Put a rope over the ears, in the set of attention to the hand can not touch the inside of the mask, will cause some pollution to the mask, so the mask will not have a protective effect. Lightly pull the mask, the other rope over the other ear, after gently pull the mask, lateral stretching, which is considered to be the basic wearing finished, to bring the right to be able to.

Press lightly on the metal strip at the bridge of the nose, towards the sides to expand, so that the mask and face a better fit, but do not force too much. Pull the lower edge of the mask to make sure the cut fits in place, so that the mask fits the face better and achieves the best protective effect.