The spread of respiratory droplets is the main route of transmission of the new coronavirus. Now that the epidemic has not been alleviated, mask protection should be done when going out to resist the v...

Masks are needed at any time during the epidemic, so how do you distinguish the front and back of disposable masks and white masks? Next I will show you at a glance Distinguish between front and back o...

Due to the recent epidemic, everyone is buying masks, but how to wear them is not clear to many people. Lets take a look at some strategies. How to wear a mask If the N95 mask model bought by the liste...

This winters smog has achieved initial results, but in many areas, influenza has become more common in recent days. Cold flu bacteria are mainly spread through droplets, that is, enter the body through...