The rail-road vehicle researched, developed and manufactured by the company independently has been formed six collections of TGC-1, TGC-2, TGC-3, TGC-3A, TGC-4 and TGC-6, among which the model TGC-4/5YS was awarded as the "Qingdao key new product". The rail-road vehicles, which are featured in less investment, low operation cost, convenient conversion function while operated on the rail-road, multi-purpose, as well as a wide range of functions etc., have been adopted as the preferred traction equipment in railway transportation by the large-scale companies, such as railway stations, railway transportation companies, locomotive depots, passenger car depots, locomotive and rolling stock manufacturers, iron and steel companies, the State Grain Reserve Reservoir and petrochemical enterprises, and so on. The vehicles have been widely used by more than 80 domestic large-scale companies and acknowledged by the users for their economical performance and practicability.
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