资讯

A standard medical face mask is the most effective way to prevent the inhalation of aerosol particles without causing substantial breathing resistance, a study of 32 face masks shows.
A surgical mask is made from pleated synthetic fabric that expands to fit around your face. It can trap 60 to 80 percent of particles in the lab, but in the real world, gaps make surgical masks ...
When we see someone wearing a mask we no longer think ‘that person has a disease, I need to stay away.'” Since the pandemic began, wearing a blue medical mask has gained positive connotations.
The medical mask market has witnessed significant evolution in recent years, driven largely by the global response to infectious diseases and the increased emphasis on healthcare safety standards.
A knotted medical mask can block 63% of particles that could contain coronavirus from escaping, a significant improvement from blocking only 42% of particles when unknotted, according to the CDC ...