1
Water, sea water; sludge and conditioned sludge; sewage and conditioned sewage; conditioned waste water
6
Common metals and their alloys; metal building materials; pipes and tubes of metal; parts and fittings for all the aforesaid goods
9
Apparatus, instruments and machines for materials' testing; meter reading apparatus and instruments; apparatus, instruments and machines for testing soils, sewage, sludges, waste, industrial effluents and waste, municipal waste, waste water, sea water; parts and fittings for all the aforesaid goods
11
Apparatus and installation for water treatment; apparatus and installations for treatment of the sea water; apparatus and installations for treatment of effluents, industrial effluents and waste; apparatus and installation for treatment of waste; apparatus and installation for treatment of waste water; apparatus and installation of municipal waste; apparatus and installation for sewage treatment; apparatus and installation for purifying, settling or filtering water, effluent or sewage; apparatus and installation for treating soil; apparatus and installation for treating sludge; chlorination plant; chlorination equipment; parts and fittings for all the aforesaid goods
19
Non-metallic building materials; pipes and tubes of plastic; seals of plastic; joints of plastic, for pipes and tubes; parts and fittings for all the aforesaid goods
36
Insurance services; real estate appraisal; insurance consultancy, finance services; real estate management; property management; property management development; buying, selling and leasing real estate and property
37
building construction; repair; installation services; installation of pipelines and mains; renovation of pipelines and mains; lining of pipelines and mains; hydraulic construction and maintenance; pipeline construction and maintenance, manufacture and construction of water, waste water and sewage treatment equipment; operation and maintenance of water, waste water and sewage plant and equipment; drain cleaning services; sewer cleaning services; pipeline cleaning services; water engineering projects; civil engineering projects; construction of buildings and civil engineering works; consultancy services relating to the installation of apparatus and installations for the treatment of water, sea water, waste water, soils, sludges, effluents, industrial effluents and waste, municipal waste; site maintenance
39
Services relating to water distribution and supply; services relating to distribution and supply of effluent waste water, sewage, sludge, industrial effluents and waste; consultancy services relating to water distribution and supply and to distribution and supply of effluent waste water
40
Services relating to treatment of water, sea water, effluent, waste water, sewage, sludge, industrial effluents and waste; custom manufacture of plastic and metal products; services in relation to the construction or provision of apparatus and installations for treatment of soils, soil conditioning, treatment of water, water purification, sewage, sludges, industrial waste, waste water, water, sea water
42
Consultancy services, environmental services; environmental consultancy services; consultancy services relating to the provision, operation and supply of apparatus and installations for the treatment of water, sea water, waste water, soils, sludges, effluents, industrial effluents and waste, municipal waste, consultancy services relating to pilot plant trials and laboratory testing associated with treatment of water, sea water, waste water, soils, sludges, effluents, industrial effluents and waste and municipal waste; materials testing; consultancy services relating to the establishment and operation of pilot plant for the treatment of soils, soil conditioning, treatment of water, water purification, sewage, sludges, industrial waste, waste water, water, and sea water; procurement logistics, technical projects studies; geological prospecting; consulting services relating to the science of water; water scientific consultancy; water testing; water purity testing; engineering; mechanical engineering; landscape design; land surveying; advice relating to all the aforesaid services; pilot plant and laboratory testing; design and construction of engineering projects relating to the provision, cleaning and supply of water
44
Landscape gardening; grounds maintenance; pest control services, vermin control services; weed control and killing services