37 Leasing of machines and mechanical apparatus for cleaning, in particular high-pressure cleaning apparatus, steam cleaning and steam jet apparatus, particle jet apparatus, spray extraction apparatus, brushing machines, vacuum cleaners, floor polishing apparatus, carpet brushing vacuum cleaners, cleaning machines for hard surfaces, cleaning machines for hard floors, cleaning machines for textile covers, sweepers, apparatus for cleaning the inside of containers, cleaning machines for glass surfaces, mechanical window cleaning apparatus, mechanically operated apparatus for cleaning motor vehicles, cleaning machines for parts made of metal, plastic and/or glass, degreasing machines, air purifiers; leasing of vehicle washing installations; leasing of washing machines, dishwashers and laundry dryers; leasing of mechanical high-pressure water jet apparatus for cleaning, removing and treating surfaces and for cutting, drilling and deburring; leasing of high-pressure water tools, in particular high-pressure lances and high-pressure spray guns; leasing of pneumatic, hydraulic, electric or manually driven handling machines, positioning devices, feed mechanisms and robots for guiding high-pressure water tools; leasing of electric suction apparatus for industrial purposes, namely, leasing of air suction machines; rental of machines and mechanical apparatus for cleaning, in particular high-pressure cleaning apparatus, steam cleaning and steam jet apparatus, particle jet apparatus, spray extraction apparatus, brushing machines, vacuum cleaners, floor polishing apparatus, carpet brushing vacuum cleaners, cleaning machines for hard surfaces, cleaning machines for hard floors, cleaning machines for textile covers, sweepers, apparatus for cleaning the inside of containers, cleaning machines for glass surfaces, mechanical window cleaning apparatus, mechanically operated apparatus for cleaning motor vehicles, cleaning machines for parts made of metal, plastic and/or glass, degreasing machines, air purifiers; rental of electric suction apparatus for industrial purposes, namely, rental of air suction machines; rental of vehicle washing installations; rental of laundry dryers; rental of steam generating apparatus and hot air generating apparatus for cleaning and washing purposes; rental of drying machines, namely, air blowers and air dryers; rental of washing machines, dishwashers and laundry dryers; rental of snow blowers and snow plows, snow clearing machines; rental of pumps for drainage purposes and for irrigation purposes and for supplying service water and drinking water, in particular water pumps, submersible pumps, house water pumps, high-pressure pumps; rental of mechanical high-pressure water jet apparatus for cleaning surfaces; rental of high-pressure water tools, in particular high-pressure lances and high-pressure spray guns; rental of pneumatic, hydraulic, electric or manually driven handling machines, positioning devices, feed mechanisms and robots for guiding high-pressure water tools; consultancy services relating to cleaning, in particular building, path and street cleaning, and relating to organization and optimization of the use of cleaning machines and cleaning apparatus for building, path and street cleaning; leasing of construction equipment in the nature of earth moving machines; leasing of working equipment for horticulture, agriculture, forestry and municipal purposes; leasing of drainage, construction, and building equipment, in particular, leasing of pumps, in particular, water pumps, pumps for ponds, submersible pumps, garden pumps, house water pumps, high-pressure pumps, metering pumps; rental of working equipment in the nature of construction equipment for horticulture, agriculture and forestry purposes