According to China Surgical Mask Manufacturers , common types of masks can be divided into flat masks, foldable masks, and cup masks. The wearing method can be divided into three types: head-mounted masks, ear-band masks, and neck-band masks.
 
1. Flat masks, also known as strap-on masks, are mainly used in the medical and health fields, such as medical surgical masks. Compared with foldable masks and cup masks, the tightness of flat masks is the worst, and basically cannot be used to prevent haze and dust, so it is not recommended to use in dusty environments. The correct way to wear a flat mask is as follows:

①The medical surgical mask has two sides, white and blue, with the white side facing inward and the side with the metal strip facing up. First, tie the two lower straps to the back of the neck, and tighten them so that the bottom of the mask reaches the root of the chin.

②Pull up the upper edge of the mask, cover the mouth and nose, and pull the two straps on the top to the back of the ears and tie them on the head, and those with elastic straps can be tied to the ears.

③ Use the index fingers of both hands to press the metal wire at the root of the nose on the mask to make it close to the skin of the nose, and then gradually move the index fingers to both sides so that the entire mask is close to the facial skin.

④ After taking off the mask, wrap it in tape or a paper bag, then put it in a covered trash can for disposal, and wash your hands in time; do not reuse disposable masks.

2. Folding masks, representing the product N95 masks. This type of mask has a unique design shape, with a good nose clip and headband, to ensure a good fit with the face. Under the same effect, the breathing resistance of the mask is small and it is more comfortable to wear. The correct way to wear it is as follows:

① Face the side of the folded mask without the nose clip, so that the nose clip is above the mask, hold the mask on the face with your hands, and hold the mask against your chin.

②Pull the upper headband over the top of the head and place it on the top of the head.

③Pull the lower headband over the top of your head and place it on the back of your neck and below your ears.

④Place the fingers of both hands on the metal nose clip, and move the fingertips to both sides along the nose clip while pressing inward until the nose clip is completely pressed into the shape of the bridge of the nose.

3. The airtightness of the cup-shaped mask is the best of the three types. Because the design of the mask is concave and convex, and there is an airtight pad at the bridge of the nose of the mask, it is more comfortable to wear while ensuring the airtightness of the mask. The correct way to wear it is as follows:

①Hold the medical mask in your hand, the nose clip at the fingertips, and let the headband hang under the hand.

② Make the mask support the chin and cover the nose.

③Fix the position of the medical mask with your hands, place the upper headband above the ears, higher behind the head, and place the lower headband below the ears.

④Put the tips of both fingers on the metal nose clip, start from the middle position, press the nose clip inward with your fingers, and move and press to the sides respectively to shape the nose clip according to the shape of the bridge of the nose.