Respirator is a kind of sanitary products, generally refers to the mouth and nose is used to filter the air entering the nose and mouth, in order to achieve the role of blocking harmful gases, odors, droplets, viruses and other substances, made of gauze or paper.

Masks have a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent and when working in a polluted environment such as dust, wearing a mask has a very good effect.

N series: no time limit for protection of non-oily suspended particles

R series: Protect non-oily suspended particles and sweaty oily suspended particles for a period of eight hours

P jerin: ba'a iyakance lokacin kariya daga barbashin mara mai mai mai shuɗi da mai amfani da mai mai mai

Lokacin da mai ɗaukar wasu jigon abubuwa ya kasance mai, kuma waɗannan abubuwa suna haɗe da suturar da ba ta saka ba, kayan wutar lantarki za su ragu, ƙuraren ƙura zai shiga. Sabili da haka, kayan matattara don hana mai da gas ɗin ya kamata a sha kulawa na musamman don magance ƙoshin lafiya. Dalilin turɓaya. Don haka kowane bangare an kasu kashi uku: 95%, 99%, 99.97% (watau ana nufin 95, 99, 100), don haka akwai ƙananan fannoni 9 na kayan tace.

From the point of view of human physiology, blood circulation in the nasal mucosa is very strong, the channels in the nasal cavity are very tortuous, and the nasal hairs constitute a filtering "barrier". When air is sucked into the nostrils, the airflow forms a vortex in the tortuous channel, which heats the airflow sucked into the nasal cavity. Some tests have shown that when cold air at minus 7°C is drawn into the lungs through the nasal cavity, the airflow has been heated to 28.8°C, which is very close to the temperature of the human body. If you wear a mask for a long time, the nasal mucosa will become fragile and lose the original physiological function of the nasal cavity, so you cannot wear a mask for a long time. Masks can only be worn in special environments, such as places with many people and no air circulation. Of course, it is necessary to wear a mask to walk in the wild to resist wind and sand, or to move in an environment with air pollution, but the time should not be too long. In addition, in the flu season, go to public places where a large number of pathogens may exist, you should also wear a mask. Wearing a mask is only one of the ways to prevent respiratory infectious diseases. The most important thing is to maintain good living habits.