Mixing installations of all kinds, in particular concrete mixing installations; conveyor machines for the construction industry; fixed mountable and convertible concrete pumps (machines); concrete pumps (machines) for mounting on chassis, vehicles and crawler tracks; concrete distribution booms; truck-mounted concrete pumps; stirring machines; mobile agitators; machines for homogenising biomass, in particular for use in biogas installations, manure spreading machines; earth-moving apparatus of all kinds, in particular hydraulic excavators, rail-road excavators, wheel loaders, bulldozers, crawler loaders, cable excavators; pile driving and drilling apparatus, rotary drilling apparatus, industrial drilling apparatus; working tools; material handling apparatus of all kinds, in particular wood handling apparatus, hydraulic excavators, telescopic loaders, wheeled telescopic loaders, reach stackers; pipe layers; crawler conveyors; crusher plants; parts and accessories for the aforesaid goods, in particular crawler tracks; cranes of all kinds, in particular tower cranes, automobile cranes, deck cranes, container cranes, mobile wharf cranes, crawler cranes, stacker cranes (reach stackers); gas and diesel engines for combined heat and power plants; machines and machine tools, in particular gear cutting machines, including gear shaping machines, roller milling machines, gear hobbing machines, and tools therefor, in particular gear cutting tools; recycling installations; material handling machines, in particular gantry robots, transport belts, workpiece storage systems and workpiece pallet storage systems for machines; robot cells for workpiece processing; hydraulic and electromechanical winches; belts for conveyors; live rings for wind installations; hydraulic flight control units; parts and accessories for the aforesaid goods, in particular diesel engines, exhaust gas treatment installations, diesel-hydraulic hybrid drives, electric motors, motor and engine control apparatus, actuators, gear boxes, including pump drives, valves, cylinders and hydraulic components, equipment, including lifting gear, working tools and attachment tools for machines, including buckets, grippers and shovels for machines, hydraulic quick-coupling systems for attachment tools, quick hitches, vibrating tools; parts and accessories for the aforesaid goods, in particular hydraulic hammers, pipe grabs, cabins, ballast systems for cranes of all kinds, in particular for mobile cranes and crawler cranes, crane booms for cranes of all kinds, in particular for mobile cranes and crawler cranes, telescopic wheel loaders; outriggers, in particular for mobile cranes and truck-mounted concrete pumps, hydraulic quick-coupling systems for mounted tools and quick hitches.