Manufacture of mining machinery; sale of mining machinery; leasing services (excluding licensed leasing services); manufacture of construction engineering machinery; sale of construction engineering machinery; enterprise management consulting; loading and unloading; repair of specialized equipment; manufacture of metal structures; technology import and export; goods import and export; research and development of automobile parts; automobile sales; manufacture of photovoltaic equipment and components; leasing of photovoltaic power generation equipment; sale of photovoltaic equipment and components; solar power generation technical services. Licensed items: production of road motor vehicles; power generation, transmission, and supply (distribution) business; installation, maintenance, and testing of transmission, supply, and receiving power facilities.