How to wear a 3m mask?

How to wear a 3m mask?
m After wearing the mask each time, you must carry out a tightness check: cover your mouth and nose with your hands and exhale. If you feel a hundred gas leaking from the nose clip, readjust the nose clip. If you feel gas leaking from both sides of the mask, Further adjust the headband position towards the back of the brain. If you can't get the seal, don't wear a mask to enter the danger zone. .

The following are the steps to wear a 3m mask:
1. Face the side of the mask without the nose clip, with the ear straps down so that the nose clip is above the mask.
2. Facing the side of the mask without the nose clip, the nose clip is located above the mask, and each of the two hands pulls one ear strap.
3. Adjust the position of the mask on the face to get a better fit and comfort. After opening the mask, use the lower edge to wrap the chin, and the entire edge of the mask is tightly attached to the face. Make sure that there is no hair, etc. on the edge of the mask that affects the tight fit of the mask.
4. Pull the upper headband over the top of the head and place it higher in the back of the head. Pull the lower headband over the top of the head and place it under the ear behind the neck.
5. Use two fingers to place in the middle of the metal nose clip, press inwards and outwards, use both hands to press inward while moving to the sides, and shape the bridge of the nose.