11
Water distribution installations; filters for water purifiers; water purifying installations; water purifying apparatus and machines; water cooling apparatus; water cooling installations; water treatment units for aerating and circulating water; water treatment apparatus for water purification; wastewater purification units; wastewater treatment installations; wastewater treatment tanks for household purposes; wastewater treatment tanks for industrial purposes; bioreactors for use in the treatment of wastewater; water filtration installations; water filtration apparatus; membranes for the filtration of water; reverse osmosis filtration units [water treatment equipment]
37
Repair or maintenance of water purifying apparatus for industrial purposes; maintenance and repair services relating to water treatment structures; construction services for water treatment
40
Water conditioning and purification; Waste water treatment; Treatment of waste water from industrial processes; industrial treatment of effluents; water treatment; water treatment services; waste and/or water treatment services; water treatment and purification
42
Services in the field of process engineering consultancy in the water, sludge and wastewater treatment and purification sector; conducting of chemical and biological analyses on waste water; platforms for as artificial intelligence software as a service [SaaS] for the treatment of water; quality control relating to computer systems for the treatment of water