China Railway Construction Heavy Industry Co., Ltd. (hereinafter referred as CRCHI), formerly known as China Railway Track Systems Group, is a large-scale professional group which integrates research, design, manufacturing and construction of sophisticated rail equipment and heavy machinery and equipment. CRCHI established several manufacturing bases in Hunan, Sichuan, Hebei and Gansu, and 11 research institutes in Changsha, Beijing, Shanghai, etc. The technical center has more than 800 specialized R&D personnel.

CRCHI actively brings the railway industry advantage into play, and makes full use of long-term accumulated construction experience and technology of China Railway Construction Corporation. CRCHI grasps core technologies with the world's leading level and completely proprietary and constantly introduces new products, new methods and new technology in the independent innovation pattern of original innovation, integrated innovation and introduction, digestion and absorption of re-innovation. CRCHI not only provides users with highly sophisticated products which include tunnel shield machine/TBM, mining method tunnel machinery, concrete machinery, piling machinery, special construction equipment and turnout, spring clip fastener, slipper, sleeper, switch tie, rail plate, electrification products, steel structure, etc, and also customizes new construction methods, new equipments for users and offers unique solutions to all kinds of tunnel construction problems.

CRCHI is the only one professional enterprise which owns development ability of both shield and mining method tunnel equipment, and also has the shield/TBM professional production line with the domestic biggest production capacity, complete equipment and the most advanced technology all over the world. The independently developed high-end shields/TBMs with completely independent intellectual property rights are used in city subway projects of Changsha, Beijing, Xi'an, Wuhan, Guangzhou, Suzhou, Nanjing, Fuzhou, etc. The independently developed mining method tunnel machineries with world leading level are in service in high-speed railway construction sites, Shanghai-Kunming high-speed railway of Chengdu-Chongqing high-speed railway, etc. Having the world's most advanced turnout and spring clip fastener production lines, the products are widely used in high-speed railways, such as Beijing-Shanghai, Wuhan-Guangzhou, Shanghai-Hangzhou high-speed railways, and also exported to United States and Canada.