Preparations for air purification with aromas; Installation, maintenance and repair of heating, air-purification, cooling, drying, ventilation, temperature-control and air-conditioning apparatus; installation, maintenance and repair of air purification apparatus; installation, maintenance and repair of ventilating apparatus; installation, maintenance and repair of air filters; installation, maintenance and repair of air analysis apparatus; installation, maintenance and repair of fans; Descaling preparations for household use; canned pressurized air for cleaning and dusting purposes; aromatic oils; aromatic oils on paper strips; Water treatment chemicals, particularly for treating water in humidifiers; cartridges containing water treatment chemicals for use in air purifiers and humidifiers; cartridges containing water treatment chemicals for demineralization for use in air purifiers and humidifiers; industrial descaling preparation; Apparatus for steam generating; ventilators for household and industrial use; air humidifiers, particularly air humidifiers for household use; industrial humidifiers; air purifiers, particularly air purifiers for household use; air purifiers for industrial use; ionization apparatus for air treatment; air purification apparatus and machines; air purification devices, particularly air purification devices for household use; air purification devices for industrial use; air sterilizers; water treatment equipment, namely, ultraviolet sterilization units; air filters for household use; air filters for industrial installations; air dehumidifiers, industrial air dehumidifiers; fans for airconditioning apparatus; air filters for air-conditioning units; disinfectant apparatus
