CSR Qingdao Sifang Co., Ltd. is the leading enterprise of China CSR Co., Ltd., whose predecessor was Sifang Locomotive and Rolling Stock Factory, which was founded in 1900. 1952, the first steam locomotive in new China was successfully developed, ending the history that China people could not manufacture locomotives. In the following years, it created many firsts in the history of locomotive and rolling stock industry, and was known as the "cradle" of new China locomotives and rolling stock. The company has two manufacturing bases in downtown Qingdao. Located in Jihongtan, Chengyang District, it is the main factory for product development and manufacturing, covering an area of about 790,000 square meters, mainly engaged in the production of aluminum alloy car bodies, stainless steel car bodies and bogies, as well as the overall assembly of high-speed trains, urban subway vehicles and high-end railway passenger cars. Located in Hangzhou Road, sifang district, it mainly manufactures carbon steel car bodies and internal combustion power products.

CSR Qingdao Sifang Co., Ltd. aims to become the strongest passenger transport equipment enterprise in the world, constantly aiming at the most advanced technology of rail transit equipment in the world, accelerating the independent research and development level of enterprises and rapidly enhancing their core competitiveness. At present, the company is giving full play to the role of the National Technology Center, the postdoctoral mobile station, the National Engineering Laboratory for High-speed Train System Integration and the National High-speed Train Industrial Manufacturing Base. Under the impetus of the implementation of the National High-speed Train Science and Technology Support Plan, the company is comprehensively promoting the research and development and manufacturing of a new generation of high-speed trains, providing equipment support for the sustained and rapid development of the Beijing-Shanghai high-speed railway and the national high-speed railway.

2010/2.3 in the joint debugging and comprehensive test of the test section between Zaozhuang and Bengbu of Beijing-Shanghai high-speed railway, the "Harmony" 380A new-generation high-speed EMU developed by China South Locomotive Group has a top speed of 486. 1 1.28 am. This is the highest speed for China high-speed railway to refresh the world railway operation test again after the trial operation of the 20 16.6km/h Shanghai-Hangzhou high-speed railway on September 28th.