KN95
(uncountable) An air particulate filtration standard originating in the People's Republic of China, which requires filtration of 95% of air particulates 0.3 microns and larger.
Something secret or unexplainable; an unknown. / Someone or something with an obscure or puzzling nature. / (obsolete) A secret or mystical meaning.
(computing) A software system for organizing text into a hierarchy.
An iconodule.
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