Yongji Xinshisu Electric Equipment Co., Ltd. (Hereafter called "Yongji", his original name "Yongji Electric Machine Factory, CNR") is a specialized high-tech large enterprise engaged in developing and manufacturing various types of traction motors, electric control devices and electric/electronic elements used in the fields of diesel/electric locomotives, EMUï .Urban Rail Vehicles, wind power generator, oil drilling machine, mine and metallurgical machinery etc., converter device, electric transmission system and mining electric locomotive etc.. Yongji was awarded the honorable title of national level enterprise in good quality and benefit in succession and also set up a postdoctor station for research and development.