ŽOS Trnava, a.s. is the largest railway cars repair workshop in Central Europe. Company manufactures new freight railway cars, carries out revision repairs on freight cars and passenger coaches, their upgrades, modifications, refurbishment of bogies, brake components, pulling and buffing gear, manufactures new and make refurbishment of wheel-sets. Production programm of the company includes also welded constructions of freight wagons, passenger coaches, trams and welded parts for general use.