11
Sanitary installations, water supply and sanitation equipment; Filters for industrial and household use; Heating, ventilating, and air conditioning and purification equipment (ambient); Water purifying apparatus; Apparatus for decalcifying water; Apparatus for descaling water; Filter apparatus for water supply installations; Water filtering apparatus; Water filtering apparatus for industrial use; Water filtering apparatus for domestic use; Appliances for water filtration [other than machines]; Aquarium filtration apparatus; Industrial-water purifying apparatus; Tap-water purifying apparatus; Water treatment apparatus for water softening; Water treatment apparatus for water softening for domestic use; Settler apparatus for sewage; Settler apparatus for water; Settler apparatus for waste; Water purifying apparatus and machines; Hand held portable water purification apparatus; Apparatus for filtering drinking water; Water softening apparatus; Water disinfection apparatus; Sewage purification apparatus; Water desalinating apparatus utilizing reverse osmosis; Transportable instruments for processing water; Water distilling units; Water filtering units for aquariums; Water filters; Filters for water purifiers; Filters for water filtering apparatus; Water filtering installations; Reverse osmosis elements for domestic use in reducing the salt content of water; Reverse osmosis elements for industrial use in reducing the salt content of water; Ion exchange installations; Rainwater purification installations; Reverse osmosis elements for reducing the brackishness of water; Installations for water treatment under osmotic process; Water softening installations; Water purification installations; Reverse osmosis elements for reducing the salt content of water; Reverse osmosis units; Cartridge filtration units [water treatment equipment]; Membrane filtration units for water treatment apparatus; Reverse osmosis filtration units [water treatment equipment]
40
Demineralisation of water; Water purification; Water treating; Water treatment [demineralising] services; Water treatment and purification