It is recommended to use a mask to prevent dust from PM2.5

It is recommended to use a mask to prevent dust from PM2.5
 
Tips for using PM2.5 dust mask (N95 mask)
1) Choose a dust mask smaller than 2.5 microns that is standard.
2) Choose the right size to cover the nose and under the chin.
3) “Should discard” when the mask is found damaged or the inside of the mask is dirty.
4) The mask should be snug against the face and press the metal part firmly against the bridge of the nose to prevent the escape of germs if the mask is insufficiently tight or loose.
5) The mask should be replaced every day if possible.
6) If you wear it and have dizzy or nausea, you should stay away from pollution. Remove the mask and consult a doctor.


Caution:
People with heart or lung problems should consult a doctor before using the mask.

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