1
Chemicals used in industry and science; chemicals for the treatment, processing and purifying of water, drinking water or waste water; filtering materials (chemical preparations)
7
Water and/or wastewater processing machinery and equipment, particularly clarifiers, dissolved air flotation, aerators, sedimentation drivers, thickeners, travelling screens, digestor covers, mixers, flocculators, trough skimmers, and rotary distributors
11
Apparatus for heating, steam generating, refrigerating, drying, ventilating, water supply and sanitary purposes; apparatus and installations for the treatment, processing, purifying and recycling of water, drinking water and waste water, including clarifiers, dissolved air flotation, aerators, sedimentation drivers, thickeners, travelling screens, digestor covers, mixers, flocculators, trough skimmers, and rotary distributors, the aforesaid apparatus and installations being in particular for the pharmaceutical industry, the food and drink industries, for the manufacture of wafers and microchips and for municipal drinking water and waste water treatment; water purification units; water distillation units; water demineralization units; apparatus and installations for the treatment of surface water and artesian water to create drinking water or ultra-pure water; apparatus and installations for purifying household and industrial waste water; apparatus and installations for water treatment using reverse osmosis processes; filters (parts of household and industrial installations); apparatus and installations for filtering liquids, in particular water, drinking water or waste water; parts for the aforesaid equipment, apparatus and installations
37
Repair and construction rebuilding services in the fields of water and/or wastewater processing facilities and equipment, installation, assembly, commissioning, maintenance, servicing and repair of apparatus and installations for the treatment, processing, purifying and recycling of water, drinking water and wastewater
42
Engineering and design consulting services in the fields of water and/or wastewater treatment processing facilities and equipment; scientific and technological services and research and design relating thereto, industrial analysis and research services, project development, planning and engineering, all the above-mentioned services in the field of the treatment, processing, purifying and recycling of water, drinking water and waste water