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Cordless vacuum cleaners have become a popular home appliance, but pain points include exhaust dirt and filter cleaning. This vacuum cleaner uses a combination of a 3-layer exhaust filter made of the same material as the disposable masks manufactured in-house and a cyclone with a 5-cylinder 2-stage centrifuge to separate even fine particles and achieve cleaner exhaust. As a result, clogging of the filter can be suppressed, and the suction power can be maintained at 90% or more without replacing the filter for 3 months.