1
Chemical used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins, unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry; chemicals relating to installations and processes for the manufacturing of and trade in water; water-purifying chemicals; acidulated water for recharging accumulators; distilled water; sea water for industrial purposes; hydrogen peroxide; heavy water; potash water; chemicals for the treatment of water for technical and industrial use; chemicals for treatment against organic and bacterial proliferation; chemicals for the cleaning of drinking water; acidic detergents for the washing of membranes; anti-incrustants for reverse osmosis membranes; anti-incrustants and rust removing preparations for drinking water; anti-incrustants and rust removing preparations for closed and open cooling circuits; anti-incrustants and hardness sequestering agents for cooling circuits; chemicals for the removal of insoluble sulphates; film aliphatic polyamides for cooling circuits, for hot water heating installations with components of aluminium; aliphatic polyamides for hot water heating installations, for steam generators and for steam installations powered by demineralised water; biocides for the treatment of industrial water with dispersants
7
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agriculture implements other than hand-operated; incubators for eggs; feedwater regulators; aerated water making apparatus; mineral water making machines; de-aerators (degassers) for feedwater; water pumps; feedwater regulators; mineral water making machines; mineral water treatment machines
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; regulating and safety devices for water apparatus; water purifying apparatus and machines; water heating installations; water-filtering apparatus; water intake apparatus; water distribution installations; cooling installations for water; water supply installations; water purification installations; water coolers and heaters; water sterilizers; water filters; pressure water tanks; water softening apparatus and installations; apparatus for filtering drinking water; water-supply apparatus; water heaters and boilers; flushing tanks; water conduit installations; water purifying apparatus; water coolers; swimming pool chlorinating units; spa baths; chlorinating apparatus for swimming pools; sand trap filters for installations for purifying, demineralising and cleaning own-manufactured and -sold water; pool units; osmosis and reverse osmosis apparatus and installations; waste water and sewage installations; apparatus for the demineralisation of mineral water for household, industrial, semi-industrial and technological use (steam generators, cooling and humidification); mineral water treatment machines for pharmaceutical industries and semi-conductors
37
Building/erection of buildings; repair; installation services; construction of installations in the field of waste disposal, water supply and sewage disposal; maintenance of sewage and fresh water installations