Many people may think it's all the same, as long as you're wearing it. This is not the case. The front and back functions of masks are different.
Viruses are the smallest particles among the particles we can come into contact with daily.
Common masks include the following types: ordinary cotton masks, disposable masks (such as medical surgical masks, ordinary medical masks), and medical protective masks (N95/KN95 masks).
The disposable three-layer mask is made of two layers of fiber non-woven fabrics that are professionally used in medical and health, and a layer of filter and spray cloth with a filtering and antibacterial effect of more than 99% is added by ultrasonic welding.
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