1
Chemicals for use in swimming pools; Chemicals for the purification of water used in swimming pools; Chlorine for swimming pools
6
Metal hoses for swimming pools; Swimming pools [structures] of metal; Couplings of metal for tubing; Tubes of nickel alloys; Tubes of copper alloys; Cast iron pipes
7
Water pumps for swimming pools; Electric pumps for swimming pools; Sweeping machines for use in swimming pools; Electric water pumps for swimming pools; Joints for tubes (metal -) [parts of machines]; Sealing joints [parts of machines]
17
Caulking materials; Weatherstripping compositions; Water-tight rings; Sealing and insulating materials; Weatherstripping sealants in the nature of caulk; Lute; Elastomeric sealing material being liquid impermeable; Foils of plastics [semi-finished products]; Plastic film, other than for wrapping; Adhesive sealant and caulking compound; Silicone sealants; Pipe sealing compositions; Glands for pipes; Pipe insulation; Pipe joint tape; Casings of rubber for tubes; Pipe gaskets; Pipe joint compound; Draught excluder strips; Waterproof sealants; Seals, sealants and fillers; Flexible hoses, not of metal; Connectors (Non-metallic -) for hoses; Non-metallic underground hose; Flexible pipes, tubes, hoses, and fittings therefor, including valves, non-metallic; Non-metallic coupling sleeves for tubes; Elbow joints (Non-metallic -) for flexible pipes; Non-metallic couplings for tubes
22
Covers for swimming pools; Plastic sheet materials [tarpaulins]; Tarpaulins made from plastics coated materials; Waterproof covers [tarpaulins]
37
Swimming-pool maintenance; Swimming pool cleaning services; Maintaining and repair of rain channels; Maintenance and repair of pipeline systems; Plumbing installation, maintenance and repair; Damp proofing services; Underwater construction, installation and repair; Repair or maintenance of water purifying apparatus; Grouting services; Application of coatings to swimming pools; Application of rendering to swimming pools; Application of waterproof linings; Assembling [installation] of building framework; Advisory services relating to surfacing projects; Advisory services relating to pipe laying; Installation of water pipes
42
Civil engineering planning services; Computer assisted engineering design services; Computer aided design services; Design services; Measurement evaluation services; Consultancy in the field of energy-saving; Advisory services relating to energy efficiency; Technical data analysis services; Measurement services; Development of construction projects; Water analysis; Water quality control services; Quality control