Manufacturing, processing, and sales of railway track equipment; self-operated and agent import and export of various commodities and technologies. Design, manufacturing, maintenance, upkeep, integration, consulting, technical services, and related services for urban rail transit vehicle bodies and interiors; road ordinary cargo transportation. General items: manufacturing and sales of high-speed rail equipment and accessories; manufacturing and sales of railway locomotive and rolling stock parts; manufacturing and sales of textile专用 equipment; manufacturing and sales of specialized equipment (excluding licensed specialized equipment); repair of specialized equipment; research and development of mechanical equipment; sales of mechanical equipment; manufacturing of general equipment (excluding special equipment); repair of general equipment; leasing of non-residential real estate; leasing of residential housing; property management.