Westinghouse Air Brake Technologies Corporation is one of the world's leading suppliers of value-added technological equipment, systems and services for the transportation sector. The activity is aorganized primarily around 5 families of products and services: - equipment: diesel-electric and liquefied natural gas locomotives, electric motors, propulsion systems, marine and mining equipment, etc.; - electronics and special products: including electronic positive train control and pneumatic braking systems, event recorders, monitoring equipment, couplings, gears, couplers, air compressors and heat exchangers; - transit products: heating, ventilation and air conditioning equipment, doors for buses and metro cars, pantographs, window assemblies, couplers, traction motors, etc.; - brake components and friction products; - refurbishment, overhaul and construction services: suburban locomotive construction and switching, overhaul and refurbishment of buses, subway cars and locomotives. Net sales per market are divided between rail freight transport (71.9%), bus, metro and high-speed train transport (28.1%). Net sales are distributed geographically as follows: the United States (47.4%), North America (8.6%), Asia and the Middle East (20.3%), Europe (17.5%), South America (4.3%) and Africa (1.9%).