ZUE S.A., together with its subsidiaries, operates in the public transport infrastructure construction industry in Poland. It operates through three segments: Construction Activities, Design Activities, and Sales Activities. The company is involved in the construction and upgrade of tram tracks, tram and trolleybus traction networks, traction substations, street lighting, cable lines, street traffic signaling, road systems, buildings, and telecommunications technology, and maintenance of tram and street lighting infrastructure; and undertakes civil structures and reinforced concrete projects, such as viaducts, bridges, passages, resistance walls or noise barriers. It also engages in the construction and upgrade of railway tracks, railway traction, railway traffic control devices, telecommunications technology, traction substations, power lines, stations, and civil structures. In addition, the company offers infrared systems, WS90E tram switch controllers, switch heating systems and controllers, and tram switch drives. Further, it provides materials and accessories to build tracks, such as rails for railways, tramways, and cranes; special profiles, light rails, and narrow-gauge railway; steel, wooden, and pre-stressed concrete sleepers; crossovers and crossover components; and aggregates, as well as various technologies. ZUE S.A. was founded in 2002 and is headquartered in Kraków, Poland.