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No matter which brand of mask: first of all, you have to look at how many layers of protection, the material of each layer, among which activated carbon and meltblown cloth, are necessities, without these two materials, the filterability will be greatly reduced. Let's briefly introduce the HK mask, 5 layers of protection, each layer intercepts different harmful substances, and the filtration is as high as 99%.
The 5 floors are:
1 pp non-woven fabric: effectively prevent inhalation of droplets and water vapor.
2. Activated carbon: adsorption and filtration of particles with a diameter less than or equal to those in the air and elimination of odors.
3. Meltblown cloth: electrostatic adsorption, filtering haze and floating dust.
4. Moisturizing cotton: breathable and warm, comfortable to wear.
5 pp non-woven fabric: skin-friendly and soft, moisture-absorbing and waterproof, keep the inside of the mask dry.
HK masks, originated in Hong Kong, focus on health.
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Activated carbon is very important, you see the anti-haze mask you bought, whether there is an air entrance similar to a gas mask, if it is just like our normal mask, it is a simple piece of cloth, he said that the sky is dazzling, his anti-haze effect is not good at all, after all, the cost is there, activated carbon is an indispensable process, there is activated carbon can largely absorb the tiny particles in the haze, reduce the damage to the lungs, if it is just a piece of cloth, whatever he says, Don't even trust him.
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To choose a mask with KN95 level for anti-haze, the mask should be soft silicone, more elastic, can fit well with the ** on the face, and will not press the bridge of the nose.
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Be sure to choose the kind of mask with filtration, so that it can prevent smog well, but you must consider clearly before buying, whether such a mask has a certain negative effect on your breathing, if there is one, then you must not buy it, but if not, then you can buy it.
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Regular quality 3M masks can meet the needs of anti-haze, you only need to buy them in regular channels, no need to choose extra, and if you find that there are quality problems in the mask, you can protect your rights through the Consumer Association. In fact, the psychological effect of anti-smog masks is greater than the actual effect, after all, you can't go 24 hours without taking off the mask, and environmental problems cannot be solved by a mask.
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The anti-haze mask uses a special filter material, which has a higher filtration level than ordinary protective masks, and the mask relies on a three-dimensional structure design to form a space-sealed space with the face, and relies on people to inhale to force the polluted air to be filtered for breathing. It's a good idea to buy some more filters so that the mask can be changed.
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If we can afford it, we can buy some better masks. After all, you get what you pay for, and a good mask, due to the procedure in which it is made, may be a little higher. You can also choose some masks that can be filtered, and general filtering masks can also remove large amounts of inhalable particulate matter.
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I think the more expensive the product, the more effective it is, just like an anti-fog mask, if you just choose a simple and cheap one, then it won't have any effect. If it is a very effective piece, then it must be more expensive. So I'll pick from the **.
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The number of the regular medical protective mask is; (KN95 N95) production standard is GB19083-2010, and the standard number of medical surgical masks is: YY0469-2011. Usually, the outer packaging of more formal medical surgical masks will be marked with the product registration number.
The numbering rules are usually as follows: x device note (x is the abbreviation of each province, such as Hubei, Zhejiang, Guangdong, etc.) + registration year + 264 (indicating that it belongs to the 64 classification of Class II medical devices) + number. It can be identified by the National Medical Products Administration's **.
How to tell if it's a real medical mask1.Regular medical surgical masks will be marked with the product registration number on the outer packaging.
2.Regular masks can be queried by entering the registration number in the ** of the State Drug Administration.
3.By looking at the production standards, you can distinguish the authenticity and grade of the mask.
4.Printed with 3M9001V is an industrial-grade protective mask, that is, an anti-haze level, which can be used by ordinary people to prevent droplets.
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Everyone should go out less, wear masks, and try not to open windows.