Detailed explanation of the most complete epidemic, Wazir Akbar Khan

Take the famous brand 3m N95 mask as an example, it can be divided into the following categories: N95/8210: The most common N95 model, which reduces respiratory resistance but does not have a breathing valve; N95/8210V: N95 mask with cool flow breather valve, better comfort, but the price will be more expensive; N95/8511: Improved breather valve, the most comfortable to wear, and M-shaped nose clip, of course, the most expensive; N95/9211: a mask specially designed for the wearer of glasses, which can reduce the fogging problem of glasses, but the supply is very small; N95/9105: The cheapest portable N95 is easy to breathe, but the seal is not so good. This picture released by People's Daily is worth referring to: "Guidelines for Different Groups of People to Choose Masks" If you are not short of money, there are N99 masks. The filter rating of the N95 is 95%, while the filter rating of the N99 is 99%, which is better! But the price? If the N95 is 5 Canadian yuan, the price of the N99 will be as high as 50 Canadian yuan! The N95 is making a mountain out of a molehill just to fight the new pneumonia, not to mention the N99? The role of N99 is more like a "mask against biological and chemical weapons", which has long been out of the category of masks. Therefore, even if you are really "not poor in money", there is no need to wear N99 masks. Moreover, N99 masks are much harder to breathe than N95 mask. To sum up, if you can buy medical masks, then the priority is to consider medical masks. If you are really out of stock, you can buy N95. However, if the price really continues to rise,Against Bacteria Breathable KN95 Face Mask, or to weigh: really need to spend several times the money, to buy a perhaps "fuss" N95, or even N99? Reprint statement Welcome to reprint the article of Vanfun Wenfang.com. Please specify the source for reprinting: "This artic