Torpol. 

Torpol S.A. constructs and modernizes railway infrastructure in Poland. It constructs overhead catenary systems, power supply systems, train traffic and control systems, and road and civil engineering structures; and implements track layout and associated works. The company also constructs and modernizes travel ways, track beds, and rapid transit tramway systems; and collision fee crossings and bike lines, as well as installs noise barriers and anti-vibration mats. In addition, it offers design, production, execution, construction, commissioning, and maintenance service for natural gas and crude oil, chemical, and petrochemical sectors, as well as provides machinery and equipment, including track renewal machines, universal tamping machines, continuous tamping machines, ballast cleaning machines, conveyor and hopper cars, railway cranes, ballast profiling machines, maintenance vehicles for catenary installations, welding complex machines, piling rigs, and gantry cranes. The company was founded in 1991 and is based in Poznan, Poland.