The KN95 mask meets the highest standards for medical masks in the United States, has good filtration, and is not only anti-particulate but also anti-droplet. The filtration efficiency of particles as small as 0.1 microns is 99.8%, and the filtration efficiency of bacterial or viral vectors (common
In COVID-19's prevention and control, the mask used to cover the nose and mouth every day is one of the most important protective tools. Recently, the University of Florida conducted an experiment on the effectiveness of masks to study the ability of masks to block the transmission of viruses when p
FFP3 masks are the most effective protection against bacteria, viruses (and thus against the new Coronavirus), fungal spores and toxic fine particles, as FFP3 masks must capture at least 99% of the particles in the air. What should we know before we buy an FFP3 mask?What is the reason for choosing F