PESA Bydgoszcz SA is the biggest Polish company producing and modernizing rail vehicles, responsive to current market challenges and aiming for development. The company is based on the historically well-established brand, which has its origin, in famous all over Europe - Królewskie Główne Warsztaty Naprawcze Kolei - created in 1851, operating after World War II as ZNTK Bydgoszcz. The baggage of experience gained in more than 160 years of history, with a constant attention to innovation of technology, allows PESA to successfully conquer the modern European market. Trains and trams are designed for carriers and passengers, not only in Poland but also in Lithuania, Ukraine, Belarus, Italy, Hungary, Romania, Czech Republic, Kazakhstan, Germany, Russia and in Bulgaria. For leading products of PESA Bydgoszcz SA are: already tested in the Italian market Diesel Multiple Units Atribo ATR 220 and ordered by domestic and foreign carriers - the new generation - Link, as well as the electrical Elf, which meets the requirements of the four collision scenario and low-floor tram - Swing, delivered eg. to Warsaw under contract for 186 vehicles. The highest standards of production processes management in PESA are confirmed by numerous certificates awarded by national and international certification institutions - including very demanding and prestigious certification IRIS 02 and Q1. The ambition of PESA Bydgoszcz SA is distribution to its customers modern and solidly made products.