6
Metal kegs; Metal storage drums; Cisterns of metal; Transportable buildings of metal; Ironmongery, small items of metal hardware; Pipes and tubes of metal
7
Sewage treatment machines; Filtering machines used in sewage handling; Machine tools; Machines for separating and thickening of sludge and purification of sewage; Compact installations (skids) for the treatment of waste water
11
Stations for the production of drinking water; Plants for the purification, desalination and conditioning of water, transportable apparatus for the treatment of waste water; Waste water treatment tanks for household purposes; Wastewater treatment tanks for industrial purposes
12
Tankers; Trailers for petrol tankers
37
Installation and repair of drums of metal, storage drums of metal, tanks of metal, transportable buildings of metal, ironmongery and small items of metal hardware, pipes and tubes of metal, machines for the treatment of waste water, filter machines for use in the treatment of waste water, machines and machine tools, machines for separating and thickening of sludge and purification of sewage; Installation and repair of compact installations (skids) for the treatment of waste water, stations for the production of drinking water, plants for the purification, desalination and conditioning of water, transportable apparatus for the treatment of waste water, waste water treatment tanks for household purposes, waste water treatment tanks for industrial purposes, tankers, trailers for tankers
42
Research consultancy, design and dimensioning of goods, namely drums of metal, storage drums of metal, tanks of metal, transportable buildings of metal, ironmongery and small items of metal hardware, pipes and tubes of metal, machines for the treatment of waste water, filter machines for use in the treatment of waste water, machines and machine tools, machines for separating and thickening of sludge and purification of sewage; Research consultancy, design and dimensioning of goods, namely compact installations (skids) for the treatment of waste water, stations for the production of drinking water, plants for the purification, desalination and conditioning of water, transportable apparatus for the treatment of waste water, waste water treatment tanks for household purposes, waste water treatment tanks for industrial purposes, tankers, trailers for tankers