What are the filter materials of the face mask? The filter material of a good protective mask has a high filtration efficiency when the mask is in good contact with the user’s face. The breathing resistance is small and the user feels comfortable. There are many kinds of materials for the filter materials of dust-proof…
What are the precautions for the use of face masks? From the perspective of human physiological structure, the blood circulation of human nasal mucosa is very strong. The passage in the nasal cavity is very tortuous, and the nose hair forms a filtering “barrier”. When air is drawn into the nostrils, the airflow forms a…
What are the prohibitions on wearing masks? Don’t pull your chin or hang it on your arm When some people wear a mask, they pull the mask to their chin to expose their mouth and nose. This not only loses the protection of the mouth and nose, but also contaminates the inner layer of the…
