In late 2019, a novel coronavirus emerged in China. Since then, it has rapidly spread throughout the world. This novel coronavirus is called SARS-CoV-2 and the disease that it causes is called COVID-19.
While some with COVID-19 have a mild illness, others may experience difficulty breathing, pneumonia, and even respiratory failure. Older individuals and those with underlying health conditions are most at riskTrusted Source for serious illness.
You may have heard a lot recently about using face masks to prevent infection. Masks can be divided into industrial, medical, and civilian according to the user category.
Industrial masks
Usually implement the American standard starting with N95, N90, etc., or the European standard starting with FFP; the national standard of Chinese masks is GB2626-2006, which is suitable for industrial masks. The filtration rate of KN90 is required to be greater than or equal to 90%, and the filtration rate of KN95 is required to be greater than or equal to 95%. Medical masks that meet the B19083-2003 standard are suitable for medical personnel and related personnel. It is used to protect airborne respiratory infections. The key to respiratory protection is to prevent bacteria and fine particles.
In late 2019, a novel coronavirus emerged in China. Since then, it has rapidly spread throughout the world. This novel coronavirus is called SARS-CoV-2 and the disease that it causes is called COVID-19.
While some with COVID-19 have a mild illness, others may experience difficulty breathing, pneumonia, and even respiratory failure. Older individuals and those with underlying health conditions are most at riskTrusted Source for serious illness.
You may have heard a lot recently about using face masks to prevent infection. Masks can be divided into industrial, medical, and civilian according to the user category.
Industrial masks
Usually implement the American standard starting with N95, N90, etc., or the European standard starting with FFP; the national standard of Chinese masks is GB2626-2006, which is suitable for industrial masks. The filtration rate of KN90 is required to be greater than or equal to 90%, and the filtration rate of KN95 is required to be greater than or equal to 95%. Medical masks that meet the B19083-2003 standard are suitable for medical personnel and related personnel. It is used to protect airborne respiratory infections. The key to respiratory protection is to prevent bacteria and fine particles.