Handle the masks after use as follows: 1. Be careful not to touch the outer surface of the mask with your hands, because viruses and bacteria may be attached to the outer surface of the mask and will contaminate your hands when you touch it. 2. Be careful to use both hands to pull on the elastic band of the mask hanging on your ears and slowly take off the mask, then fold the mask backwards, turning the inside out and the outside backwards to the inside. 3. 4.If the mask is taken off in a public place, the same steps as above, and then throw the mask in a special bin for discarding masks, and send these discarded masks to a special place for incineration and disinfection by special people.