China Railway First Survey and Design Institute Group Company Limited

China Railway First Survey and Design Institute Group Co., Ltd. (Tieyiyuan) was established in 1953 and is headquartered in Xi'an, Shaanxi Province. It is the first large-scale comprehensive railway survey and design unit established in New China, and is the world's top 500 China Railway Construction. A wholly-owned subsidiary. The comprehensive strength of the enterprise is at the forefront of the top 100 national survey and design. 

The business scope of Tieyiyuan covers the whole process of engineering planning, survey , design, consulting, supervision, general contracting and real estate, capital operation, comprehensive property development, and the whole industry chain. It has national engineering survey, engineering design, engineering supervision and engineering consulting. 2 0 remainder of various types of qualification certificates, the first in the industry through the ISO9001 certification, the establishment of the quality, environment, occupational health and safety integrated management system, and the British Royal UKAS certification . Built there "State Key Laboratory of Rail Traffic Engineering Information" and "Key Laboratory of Traffic Engineering Shaanxi Province, railway and underground" as well as academicians and experts studios , post-doctoral research work station.