6
Building materials of metal; Water-pipes of metal; Access covers (Metal -); Street gutters of metal; Gutters and gutter pipes of metal; Drain pipes, drain traps (valves), regulating valves, flap valves, sewers and drain covers of metal; Metal drains for use in construction of basement waterproofing systems; Ducts made of metal for trunking conduits for liquids; Overflow channels of metal; Branching tubes of metal for pipelines and sewers; Guttering of metal for the dispersal of wastewater and rainwater; Pipes, tubes and hoses, and fittings therefor, including valves, of metal; Fittings of metal for pipes
17
Articles of rubber for use in connecting pipes and for insulation and barrier purposes; Flexible pipes consisting of rubber and plastic; Flexible pipes, not of metal; Rubber hoses and rubber pipes; Fittings, not of metal, for pipes in the form of gaskets, rubber and hoses
19
Building materials (non-metallic); Non-metallic rigid pipes for building; Access covers of non-metallic materials; drainage gullies not of metal; Gutters and gutter pipes, not of metal; Run-off channels, not of metal; Run-off channels, not of metal; Drain pipes, drain traps (valves), regulating valves in the form of valves, not of metal, for regulating or shutting off water flow (water, wastewater, slurry) and other liquid media, flap valves, sewers and drain covers, not of metal; Drains (not of metal) for use in construction of basement waterproofing systems; Ducts (not of metal) for trunking conduits for liquids; Overflow channels, not of metal; Branching tubes, not of metal, for pipelines and sewers; Guttering, not of metal, for the dispersal of wastewater and rainwater; Pipes, tubes and hoses, and fittings therefor, including valves, not of metal; Fittings, not of metal, for pipes in the form of connectors, bends, T-connectors and reducers
37
Plumbing installation advisory services; advisory services relating to the repair and maintenance of environmental control systems
42
Consultation in environment protection; Civil engineering consultancy; Technical consultancy in the field of environmental engineering and environmental science; Advisory services relating to the design of ponds; Technical consultancy services relating to civil engineering; Consultancy services relating to environmental planning
44
Advisory services relating to water gardening; Advisory services relating to the design of turf; Consultancy relating to agriculture and fish farming