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2021
DATE
09 - 20
HEPA filter's introduction
HEPA is an acronym that stands for High Efficiency Particulate Air. The National Air Filtration Association (NAFA) defines HEPA filters as a filter having a minimum efficiency of 99.97% on 0.3 micrometer particles.
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2021
DATE
09 - 17
MERV Ratings' meaning
What Are MERV Ratings?Minimum Efficiency Reporting Value (MERV) is an industry standard that measures the overall effectiveness of air filters. As the MERV rating increases the finer the filtration becomes.
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2021
DATE
09 - 15
How to judge whether the mask contains melt blown cloth
The key layer of the mask is the meltblown cloth layer with electrostatic adsorption in the middle. If the static electricity is lost, the anti-epidemic effect of the mask will also decrease.
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2021
DATE
09 - 13
How do masks play a role in epidemic prevention
Brownian motion of particles diffuses and shifts to filter fibers, and is adsorbed by molecular gravity. It is easiest to capture small-scale particles, fine fibers and low-speed particles.
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