1
Chemical preparations and substances for treating water; water treatment chemicals, in particular for boiler water, cooling water, humidifier water and drinking water
11
Water purification installations, water purification devices and machines; installations, apparatus and machines for water treatment and purification, namely for the decalcification of water to improve water content, except water ionisation apparatus, included in class 11; apparatus for water treatment, namely for the decalcification of water to remove and improve water contents, namely physical and chemical (through osmosis, UV or ozone) water treatment, except water ionisation apparatus, included in class 11; apparatus and installations for water treatment and after-treatment, namely for the decalcification of water to clear and improve water content, except water ionisation apparatus, included in class 11; refrigerating and air conditioning apparatus and components therefor, included in class 11; steam generators and parts therefor, included in class 11; air-conditioning installations; air conditioning apparatus, the aforesaid goods other than in connection with heavy fittings and valves
37
Custom installation and assembly of machines and installations for water purification and treatment; chemical purification, in particular for boiler water, cooling water, humidifier water and drinking water installations and installation parts
39
Storage and delivery of chemicals and installations, apparatus and machines for water treatment and processing, namely for the decalcification of water to remove and improve water content
40
Water processing and water treatment, in particular for the recovery and treatment of boiler water, cooling water, humidifier water and drinking water