11
Water filtering apparatus; Water filtering installations; Water conduits installations; Water purification tanks; Water purification units; Water distilling units; Apparatus for decalcifying water; Water purification installations; Water desalinating apparatus; Water sterilizers; Water softening units; Water purifying apparatus; Water distribution installations; Water conditioning units; Water treatment filters; Water softening apparatus; Water supply installations; Water conditioning installations; Water disinfection apparatus; Water conditioning apparatus; Water filtering units; Strainers for water lines; Water purifying apparatus and machines; Filter apparatus for water supply installations; Water filters for industrial purposes; Pressure supervision apparatus [safety apparatus for water apparatus]; Pressure relief valves [safety apparatus] for water apparatus; Hydrants for water supply; Electrostatic filters for water filtration; Water purification, desalination and conditioning installations; Water softening installations; Installations for water treatment under osmotic process; Chlorinating units for water treatment; Water purifying units for producing potable water; Reverse osmosis elements for reducing the salt content of water; Reverse osmosis elements for reducing the brackishness of water; Ultra-violet water sterilisation units for industrial use; Reverse osmosis elements for industrial use in reducing the salt content of water
40
Water purification; Demineralisation of water; Water treating; Regeneration of water; Desalination of water; Rental of water treatment equipment; Rental of water and air purification equipment; Air and water conditioning and purification