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CRRC Yongji Electric Co., Ltd. (Hereafter called "Yonge") is one of key members of CRRC Cooperation Ltd., and is a specialized 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 locomotive, metro vehicle, urban rail vehicle, oil drilling rig and wind power generation etc. The company introduced technology from SIMENS, ALSTOM, EMD, HITACHI and TOSHIBA. The Joint Ventures between Yonge and HITACHI, Yonge and ALSTOM  have been founded in Xi'an City, Shannxi Province, China. The oil drilling motors Yonge manufactured can meet various installing requirements on oil drilling rig. The motors can be divided into two series. One is the YZ DC motor with separate excitation and series excitation, the other is the YJ asynchronous motor with frequency control of motor speed. Its rated power can be from 200kw to 1600kw (different grades of rated power can be supplied according to the needs of users). At present, these motors are installed on the drilling rigs with drilling depth from 1000m to 7000m.Yonge can supply traction motors that can be interchanged with GE761A15/19/23, GE752AF8,D31 and D29cct as well as armatures that can replace D29/31 Armatures, GE776/787/788 Armatures, which have been exported to America, Canada, Australia, Nigeria, South Africa, India and Pakistan etc. Yonge has been certified in conformity with the ISO9001 quality control system, ISO14001 environmental management system and IRIS (International Railway Industry Standard) carried out by both internal and external organizations.Yonge also can design and manufacture motor based on users' requirements.Yonge’s Repair Services offers a one-stop solution for railway traction motors, miningmotorized wheels and drilling motors. The Repair Services Team is always up for a newchallenge and welcomes your requests. Yonge has supplied repair service for Sri Lanka, Egypt,Malaysia, Viet Nam, Canada, Pakistan, Australia and New Zealand etc.