Air conditioning apparatus; Air purification units; Air purifying apparatus; Air-conditioning apparatus; Air-conditioning installations; Air-conditioning, air cooling and ventilation apparatus and instruments; Apparatus for disinfecting water; Electric and battery operated aromatherapy units; Electro-chemical flue gas scrubbing machines; Evaporators for air conditioners; Fibrous filtering media for general industrial use in the purification of air and industrial fluids; Gas purification machi...