Manufacturing of railway locomotive and rolling stock parts; manufacturing of high-speed rail equipment and parts; manufacturing of specialized railway measuring or testing instruments; manufacturing of electrical signal equipment devices; manufacturing of general parts; manufacturing of metal processing machinery; manufacturing of construction engineering machinery; manufacturing of metal structures; leasing of mechanical equipment; leasing services (excluding licensed leasing services); sales of building materials; sales of metal materials; retail of hardware products; retail of clothing and apparel; sales of railway locomotive and rolling stock parts; loading and unloading; labor services (excluding labor dispatch); import and export of goods; technical import and export; solar power generation technical services; leasing of photovoltaic power generation equipment; energy storage technical services; energy-saving management services; sales of intelligent power distribution and control equipment; sales of solar thermal utilization equipment; sales of solar thermal utilization products; manufacturing of photovoltaic equipment and components; sales of photovoltaic equipment and components. Licensed projects: power generation business, power transmission business, power supply (distribution) business.