6
Metal hardware; Building and construction materials and elements of metal; High pressure metal cylinders [containers]; Bottles [containers] of metal for compressed gas or liquid air; Junctions of metal for pipes; Pipe extensions of metal; Pipework of metal; Copper tubes [other than parts of machines]; Pipes and tubes of metal; Pipes, tubes and hoses, and fittings therefor, including valves, of metal; Tubes of copper alloys; Screws of metal; Nuts, bolts and fasteners, of metal; Semi-finished articles of copper or its alloys; Collars of metal for fastening pipes; Set screws of metal; Bushings of metal [other than parts of machines]; Metal brackets; Dowel rods of metal; Anchors of metal; Elbows of metal for pipes; Gulleys of metal; Spigots [stoppers] of metal
9
Measuring, detecting, monitoring and controlling devices; Detectors; Smoke detectors; Pressure gauges; Pressure indicators; Pressure indicator plugs for valves; Precision balances; Refrigerant meters; Refrigerant scales; Humidity sensors; Temperature sensors; Pollutant sensors; Apparatus, instruments and cables for electricity; Conduit couplings [electric]; Connections for electric lines; Plug-in connectors; Copper wire, insulated; Central heating programmers; Transformers [electricity]; Electric linear actuators; Photovoltaic inverters
11
HVAC systems (heating, ventilation and air conditioning); Refrigerating and freezing equipment; Heating, ventilating, and air conditioning and purification equipment (ambient); Air treatment equipment; Central air conditioning installations; Electric space cooling apparatus; Installations for the cooling of air; Air-conditioning apparatus; Portable air conditioners; Air-conditioning installations; Fans [parts of air-conditioning installations]; Cooling appliances and installations; Cooling apparatus and appliances; Refrigerating chambers; Cooling elements; Air freezing installations; Industrial cooling installations; Filters for air conditioning; Filters for use with apparatus for air conditioning; Power filters for airconditioning
17
Fittings, not of metal, for flexible pipes; Fittings, not of metal, for rigid pipes; Insulation and barrier articles and materials; Flexible pipes, tubes, hoses and fittings therefor (including valves), and fittings for rigid pipes, all non-metallic; Seals, sealants and fillers; Thermal insulation articles and materials; Rubber shock absorbers for industrial machinery; Insulated pipe supports; Non-metal elbows for pipes; Non-metallic couplings for pipes
19
Non-metal vent covers for HVAC ducts; Branching pipes, not of metal; Brackets, not of metal, for building; Ties (Non-metallic -) for use in building; Ducts, not of metal, for ventilating and air-conditioning installations; Louvre vents (Non-metallic -) for buildings; Fire protection screenings (Non-metallic -) for electric ducts; Fire protection materials (Non-metallic -) for use in building