08-16
Use timeFrom the perspective of human physiological structure, because the blood circulation of the nasal mucosa is very strong, the passage in the nasal cavity is very tortuous, and the nasal hair for…
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1. The mask is contaminated, such as blood stains or droplets and other foreign objects.2. The user feels that the breathing resistance becomes greater.3. The mask is damaged.4. Dust-proof filter cotto…
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Dust blocking efficiencyThe dust blocking efficiency of a mask is based on its blocking efficiency for fine dust, especially for respirable dust below 2.5 microns. Because the dust of this particle siz…
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Flat maskCotton masks, non-woven masks, polymer masks, activated carbon powder filter masks, activated carbon fiber felt masks.Air-supplied maskIt refers to a clean air source isolated from harmful sub…
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1. Metal distinctionIt is distinguished by metal strips. Usually, the color of medical masks is mostly the same. Generally, the metal strip is on the upper side and protrudes to the outside-the outside…
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1. The light-colored side of the disposable mask faces inward (the reverse side), and the end with the metal strip faces up (upper), that is to say, the light-colored side is close to our face, and the…
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