Clean hands before wearing a mask

If the mask package says how to wear it, follow the instructions to wear the mask

When wearing a mask, be sure to keep it close to your face

The colored side of the mask faces out

Tie all the ropes that hold the mask or fasten the rubber bands to your ears

The mask should completely cover the mouth, nose and chin

The concealed wire side of the mask should be fixed to the bridge of the nose to prevent air leakage

In general, masks should be replaced every 4 hours

If breathing is difficult, the mask is broken or twisted, and it cannot fit well, the mask must be replaced immediately