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Refrigerators and freezers; Climatic cabinets for wine; Cabinet systems for beverages, in particular beer; Air-conditioning installations; Heating and ventilating apparatus; Forced aeration systems; Air treatment systems; Air humidifying systems, in particular for vehicles and flying machines; De-icing systems; Heating apparatus, ventilating apparatus and air-conditioning systems (HVAC) for rail vehicles; Steam heating devices for rail vehicles, and parts and accessories therefor, including steam heating couplings and steam pressure valves; Heat energy recovery systems, in particular systems for utilising waste heat; Turbines for air-conditioning apparatus and for air-conditioning based on cold air vacuum processes for use in rail vehicles; Toilet systems for vehicles, in particular rail vehicles; Integrated air management systems, Air-conditioning systems; Bleed air systems for propulsion mechanisms; Components for air management systems, namely, Heat exchangers, other than parts of machines, drain off cocks, Temperature control valves, Pressure relief valves, Flow rate regulation valves; Water purification installations