1. Wash your hands before wearing a mask.
2. Hold the ear rope with both hands, the dark side of the color is outside (blue), the color is light (sue white).
3. Put the side of the mask with a wire (a small piece of hard) on the nose, pinch the wire according to your nose and then pull the mask cover completely down so that the mask completely covers the nose and mouth.
4. Disposable masks generally replace one for 8 hours, can not be reused.