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Medical masks are a large category, and medical masks include medical surgical masks. Medical surgical mask is a kind of medical protective fabric, which is mostly composed of one or more layers of non-woven fabrics. Its production processes mainly include meltblown, spunbond, hot air, etc., which he a barrier effect on liquids and can filter particles and bacteria. .
Sterile masks, medical surgical masks and medical protective masks commonly used in medical equipment. Medical surgical masks are mainly used in general operations and operations, and can prevent the filtration rate of 3 micron particles from reaching more than 95%. Medical protective mask is a kind of protective mask with a higher level of protection, which must be worn for disease outbreak protection.
Medical masks are generally divided into three categories: cotton gauze masks, surgical masks, and medical masks. They are characterized by: cotton gauze masks: They can prevent local infections, but they are not very close to the human face and are not effective. Medical surgical masks: divided into three layers, the external water blocking, the medium blocking the air particles above 5 microns is greater than 90%, the internal moisture absorption. Medical protective mask: certified by the American Occupational Safety and Health Association. n-refers to non-oil-free particles, 95 means that under the test conditions specified in the standard, the filtration rate reaches 95%, which has good compactness. During body city puncture, when working in the operating room or nursing patients with weakened immune function, surgical masks should be worn.
I think you he all seen the domestic disaster,
Also noticed the outbreak of an epidemic abroad,
At present, you must wear a mask, which is just needed~.
All kinds of masks are sold in the circle of friends, all kinds.
With anti-smog, industrial dust-proof, warm cotton cloth,
There are three without products.
I would like to remind you not to go to the doctor in a hurry,
Medical antiseptics must be used when choosing masks.
Wearing an incorrect mask to go out is equivalent to not wearing a mask.
It's not just that you don't guarantee your safety,
It also allows you to take the virus home if you think it’s safe.