1
Solder stripping preparations
3
Bleaching preparations and other substances for laundry use; Cleaning preparations; Polishing preparations; Grease-removing preparations; Abrasives; Emery paper; Emery cloth; Scouring solutions; Rust removers
6
Screws of metal; Screw nuts of metal; Non-electric cables of metal; Non-electric wires of common metal; Pipes and tubes of metal; Junctions of metal for pipes; Cable joints of metal, non-electric, Collars of metal for fastening pipes; Socket welds; Screw connections, Pipe muffs of metal; Elbows of metal for pipes; Valves or sliding valves of metal, Plugs of metal; Metallic drain traps; Water valves of metal; Water-pipes of metal; Drain traps [valves] of metal; Rods of metal for welding; Plugs of steel wool; Tanks of metal; Valves of metal, other than parts of machines
7
Reducers (Pressure -) [parts of machines]; Valves (Clack -) [parts of machines]
8
Hand tools, hand-operated, for treatment of materials; Hand tools, hand-operated, for building; Hand tools, hand-operated, for repair; Hand tools, hand-operated, for maintenance
9
Computer software, recorded; Temperature controlling apparatus; Heat regulating apparatus; Time-delay programming devices; Temperature regulators for heating installations; Measuring, checking (supervision) apparatus and instruments; Manometers; Level indicators; Temperature indicating apparatus; Alarms and safety devices for plumbing installations; Alarms and safety devices for sanitary installations; Alarms and safety devices for gas installations; Alarms and safety devices for heating installations; Apparatus for analysing and detecting gas; Electric, electronic and magnetic apparatus for scale control, for improving water quality and for controlling heating installations
11
Space heating apparatus; Steam generating apparatus; Cooking appliances; Refrigerating apparatus; Apparatus for drying; Apparatus for ventilating; Water supply installations; Sanitary apparatus and installations; Taps [faucets]; Taps [cocks, spigots] [faucets (Am.)] for pipes; Mixer taps for water pipes; Fittings for the draining of water; Toilet tanks; Fittings (sanitary installations), Flushing cocks and mechanisms; Air release valves; Steam traps; Air valves for steam heating installations; Filters; Water purifying installations, water softening installations; Water filtering apparatus; Water intake apparatus; Hydrants; Water pipe installations; Water distribution installations; Cooling installations; Water heating installations
17
Flexible pipes, not of metal; Joint packings; Expansion joints; Sealants for joints; Pipe jackets, not of metal; Clack valves of rubber; Junctions, not of metal, for flexible pipes; Pipe gaskets; Threads of plastic for soldering
37
Construction services; Repair and installation of apparatus for the supply of water, gas, heating and ventilation; Maintenance of water supply apparatus; Maintenance of gas apparatus; Maintenance of heating apparatus; Maintenance of ventilating apparatus
41
Tuition; Training; Entertainment services; Sporting activities; Cultural activities; Publishing; Book lending; Organisation of competitions (education or entertainment); Arranging and conducting of colloquiums; Arranging and conducting of conferences; Arranging and conducting of congresses; Seminars; Arranging and conducting of training courses; Organization of exhibitions for cultural or educational purposes
42
Technical assessment of installations for the supply of water, gas, heating and ventilation; Scientific evaluation and research provided by engineers; Technological evaluation and research provided by engineers; Design and development of water supply installations and apparatus; Design and development of gas supply installations and apparatus; Design and development of heating supply apparatus; Design and development of ventilation supply apparatus; Research and development for others; Conducting technical project studies