In the past, perhaps only in beijing did we know that what was a “breathing pain”. But it’s different now. If you want to say that you haven’t seen smog before, life seems to be a little less what. This morning, Dr. Clove thought quietly for a moment. Perhaps it is also good for the smog to become more and more serious… It makes everyone realize their wish of “self-improvement and non-inhalation”… Masks, as the [gatekeeper] of respiratory tract, naturally become a necessary good product in smoggy days. But there are so many masks on the market, which one can prevent haze? Today, Dr. Clove will tell you about this. Detail 1: There are 3 kinds of common masks, but… Read More …