Waste pumps; collecting containers for scale as parts of machines; machine parts for machines for the storage, treatment, conveyance and discharge of liquids and waste of all kinds, screenings, sludge and filter cakes, namely, basin covers, gullies, weirs, grates, grilles, inlets, circulation agitators and rotary sprayers; aeration rotors being parts of machines for the treatment of liquids; apparatus for aerating water; nozzles being parts of machines for the treatment of liquids; nozzle sprayers being parts of machines for the treatment of liquids; filters being parts of machines for the treatment of liquids; conveyors; filtering machines for applications in the field of liquid and water treatment; filter presses; filter press plates and frames being parts of filter press machines; clamp connectors for piping being parts of machines; drag conveyors; raking machines; piston pumps being machine parts; machines and machine tools for treatment of water and liquids; pumps for sewage sludge; machines and mechanical devices for separating solid materials/fluids for use in the field of water and liquid treatment; machines and mechanical devices for industrial filtration; machines, mechanical equipment, machine tools and parts thereof for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, sewage sludge and filter cakes, namely, installations consisting of machines and machine parts for the treatment of liquids or sludge, in particular by means of circulation, stirring and gas injection; diaphragm pumps; surface aerators for aerating water; pumps, namely, electric pumps; pumps being parts of machines for liquid and water treatment; raking screens being machines; presses for screenings; shredding machines for screenings; rake cleaning machines; engine boiler tubes being machines; non-return flap valves being parts of machines; stirrers being machines; grit chambers being machines for removing waste materials during industrial processes; grit washers; sliding valves; sliding panels for machines; sieves being machines and machine parts; sifting machines; floating matter collecting machines; sludge collecting machines; sludge compactors; sludge conveyors; sludge pumps; bucket-wheel excavators; underwater aerators being machines; ball screws specially adapted as structural parts of water treatment machines; water separators; industrial screens and screen panels for industrial, agricultural, municipal, environmental, mining, surface water filtration and oil and gas purposes

Construction of buildings and industrial structures for third parties in connection with the use of industrial screening devices and filters for industrial, refining, mineral processing, agricultural, building, municipal, environmental, oil and gas purposes; construction and installation services, in particular with respect to installations of industrial machinery for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, sewage sludge and filter cakes; repair and maintenance of pipes; repair of installations of industrial machinery for the treatment of liquids, gases and solid materials and repair of installations for the storage, conveyance and discharge of liquids, waste of all kinds, screenings, sewage sludge and filter cakes; construction supervision and construction management services for third parties, in particular construction supervision of civil engineering projects in the field of water technology and construction services in the field of installations for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, sewage sludge and filter cakes