Air cleaning units; Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air purification units; Air purifiers; Air purifying apparatus; Air purifying apparatus and machines; Air purifying units for commercial and residential use; Air sterilizers; Air-conditioning apparatus; Electric air deodorizers; Electric air sanitizing unit; Gas purification machines; Gas recycling system comprised primarily of one or more of the following pieces of equipment, name...