Taiyuan Railway Rolling Stock Co., Ltd. is a main factory for making and overhauling of electric locomotive, railway wagons and railway engineering work vehicles in China. The railway engineering machinery made by the factory represents the leading domestic level. Railway wagon involves flat wagon, hopper wagon, tank wagon and open top wagon. The engineering work vehicles include catenary work car, invariable tensile force unrolling car, heavy rail car, industrial diesel locomotive, tunnel two car.