Taiyuan Heavy Machinery Group Co., Ltd (TZCO), founded in 1950, was the first heavy machinery manufacturing enterprise designed and built independently by the PRC. Taiyuan Heavy Industry Railway Transit Equipment Co., Ltd is the world’s full-process R&D and manufacturing base for different types of wheels, axles, wheelsets and gearboxes. The annual capacity is 700,000wheels,160,000axles,10,000gearboxes and 30,000wheelsets. It has professional certifications, such as ISO9001,IRIS,CNAS,AAR,CRCC,DB,TSI,EN15085,EAC,RISAS,MOLIT.The first domestic company to obtain the certificate for Chinese “Fuxing” high speed rail and DB bearing axle boxes assembly certificate. Also first obtained the certificate for Chinese EMU wheels and axles.