7
Machines and machine tools for the manufacture and operating of installations for the storage, treatment, conveying and drainage of liquids, waste of all kinds, screenings, clarified sludge and filter cakes, machines and installations for separating solids and/or liquids, in particular sieve rakes, step rakes, filter installations, superfine sieves, thickeners, drainers, spiral presses, drum sieves and screening washers, machines and installations for treating sand, in particular sand graders, grit washers and sand catchers, spiral conveyors and conveyor screws for dry, moist, wet, paste, adhesive, powder, lumpy or abrasive material, pumps, in particular dry or wet pumps for wastewater and sludge, in particular torque flow pumps, bilge pumps, pinion-shaped cutter pumps and turbotex pumps
9
Weighing, measuring, signalling and checking (supervision) apparatus and instruments, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, in particular for installations for the storage, treatment, conveying and drainage of liquids, waste of all kinds, screenings, clarified sludge and filter cakes, machines and installations for separating solids and/or liquids, in particular sieve rakes, step rakes, filter installations, superfine sieves, thickeners, drainers, spiral presses, drum sieves and screening washers, machines and installations for treating sand, in particular sand graders, grit washers and sand catchers, spiral conveyors and conveyor screws for dry, moist, wet, paste, adhesive, powder, lumpy or abrasive material, pumps, in particular dry or wet pumps for wastewater and sludge, in particular torque flow pumps, bilge pumps, pinion-shaped cutter pumps and turbotex pumps
37
Building construction and installation services, in particular with regard to installations for the storage, treatment, conveying and drainage of liquids, waste of all kinds, screenings, clarified sludge and filter cakes, machines and installations for separating solids and/or liquids, in particular sieve rakes, step rakes, filter installations, superfine sieves, thickeners, drainers, spiral presses, drum sieves and screening washers, machines and installations for treating sand, in particular sand graders, grit washers and sand catchers, spiral conveyors and conveyor screws for dry, moist, wet, paste, adhesive, powder, lumpy or abrasive material, pumps, in particular dry or wet pumps for wastewater and sludge, in particular torque flow pumps, bilge pumps, pinion-shaped cutter pumps and turbotex pump