Masks will now be classified; check to see if you’ve chosen the right one!
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Masks will now be classified; check to see if you’ve chosen the right one! Wearing a mask has become the most cost-effective way to protect against fogging, but do you think that just wearing any ordinary anti-fogging mask is enough to prevent air pollution? At present, the vast majority of people still don’t know how to choose a mask. The editor offers some advice: check your mask right away to see if you have chosen the right one!
These should be shown to the boss and the procurement department