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Best Choice VTAR 
4 Pack Plug-In Negative Ion Ionizer for Home, Office, Kitchen, Bedroom, Bathroom - Filterless, Quiet Operation, Portable 40-100 Million Ions/Minute for Refreshed Air：It releases high concentrations of negative ions to neutralize odorous subsHydklcd 
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2 Pack Plug-In Negative Ion Ionizer for Home, Office, Kitchen, Bedroom, Bathroom - Filterless, Quiet Operation, Portable Negative Ion Function: Generates 40 to 100 million negative ions per minute. Negative ions help improve mood and health34% Off Zenthalis 
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