1
Chemical preparations for use in industry; chemicals in liquid form except liquid gases, including in capsules and in powder form, for water treatment, in particular for drinking water and swimming pool water; chemicals for use in water treatment, namely, chemicals for preventing slime in water systems and for deodorizing waste and waste water, in particular in liquid form, including in capsules
3
Cleaning preparations, namely, preparations for cleaning structural parts for water conducting systems, in particular conduits, and substrates of all kinds, the cleaning preparations being in particular in liquid form, including in capsules
5
Pharmaceutical preparations for the treatment of infections of sensitive, psoriasis and dermatitis affected skin; veterinary preparations for the treatment of udder and uterus infections in cows, sheep and other cloven hoofed animals and for the treatment of scales and gills of fish and aquatic livestock; sanitary preparations for medical use; disinfectants; deodorizing cleaning preparations; preparations for destroying vermin; fungicides; herbicides; all purpose disinfecting preparations, namely, preparations for disinfecting structural parts for water conducting systems, in particular conduits, and substrates of all kinds, the disinfecting preparations being in particular in liquid form, including in capsules
37
Maintenance, servicing, and installation of water purification installations
42
Engineering
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