Air-conditioning apparatus; Air-conditioning installations; Air purifiers; Air purifying apparatus and machines; Air sterilizers; Apparatus for disinfecting water; Electric air deodorizing apparatus; Electric fans for personal use; Filters for air conditioning; Gas scrubbing apparatus; Germicidal lamps for purifying air; Ionization apparatus for the treatment of air; Ultraviolet ray lamps, not for medical purposes; Water filters; Water purification installations; Water purifying apparatus and...