What are the classifications and uses of protective masks?The role of the protective mask is to provide the wearer with safe and effective personal respiratory protection. However, in a real application environment, the face screen or lens of the protective mask is prone to fogging, which may cause

Protective maskThe protective mask is an industrial protective mask used to protect the eyes and face from dust, chemicals, heat, poisonous gas, debris and other harmful substances. It is equipped with toothed knobs on the left and right sides of the elastic head clamp. A large arc-shaped thin curve

Scientific common sense about masks（3）7. Can protective masks be washed? Can it be disinfected?3M particulate protective masks (sometimes called disposable masks) cannot be used after cleaning and disinfection, because the cleaning and disinfection methods usually lead to reduced filtration efficien

Scientific common sense about masks（2）4. Is it necessary to use medical protective masks to protect against viruses? What is the difference between medical N95 and N95 protective masks?Medical protective masks are protective masks designed to protect medical workers in a specific medical environment