electric deodorizing unit for household purposes; dehumidifiers for household use; air purifying apparatus for building; sterilization units for buildings in the nature of apparatus that floods a room or space with anti-bacterial gas that eliminates all bacteria in the room or space; air sterilizers; air purifiers; filters for air purifiers; air purifying apparatus and machines; air purifying apparatus; air sterilizing apparatus; household air cleaners; air filters for air cleaners; oxygen ge...