The CRRC, which inherited all the business and assets of China CNR Corporation Limited and CSR Corporation Limited, is the world's largest supplier of rail transit equipment with the most complete product lines and leading technologies. Its main businesses cover the R&D, design, manufacture, repair, sale, lease and technical services for railway rolling stock, EMUs, urban rail transit vehicles, engineering machinery, all types of electrical equipment, electronic equipment and parts, electric products and environmental protection equipment, consulting services, industrial investment and management, asset management, import and export.