Manufacturing of construction machinery; sales of automobiles; sales of construction machinery; landscaping engineering construction; earthwork engineering construction; urban greening management; municipal facility management; leasing of construction machinery and equipment; leasing services (excluding licensed leasing services); recycling of renewable resources (excluding production scrap metal); processing of renewable resources; sales of renewable resources; research and development of resource recycling technologies; research and development of waste asphalt recycling technology; information consulting services (excluding licensed information consulting services); research and development of mechanical equipment; sales of mechanical equipment; leasing of mechanical equipment; manufacturing of general parts; manufacturing of general-purpose equipment (excluding special equipment); sales of petroleum products (excluding hazardous chemicals); manufacturing of concrete structural components; sales of concrete structural components; manufacturing of specialized equipment (excluding licensed specialized equipment); manufacturing of new building materials (excluding hazardous chemicals); processing of building stone; promotion of new material technology services; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; manufacturing of non-metallic mineral material forming machinery; manufacturing of non-metallic mineral products; sales of non-metallic ores and products; processing of non-metallic waste and debris; glass manufacturing; manufacturing of daily-use glass products; sales of daily-use glass products; manufacturing of optical glass; sales of optical glass; sales of glass fiber reinforced plastic products; sales of glass fiber and products; manufacturing of technical glass products; sales of technical glass products; sales of building materials; sales of lightweight building materials; sales of building decoration materials; sales of cement products; sales of enamel products; sales of asbestos cement products; manufacturing of asbestos cement products; sales of asbestos products; manufacturing of asbestos products; sales of rubber products; installation services for general mechanical equipment; engineering management services; labor services (excluding labor dispatch); manufacturing of mining machinery; manufacturing of environmental protection specialized equipment; manufacturing of new energy original power equipment; manufacturing of agricultural machinery; manufacturing of containers; manufacturing of metal processing machinery; manufacturing of metal materials; processing of mechanical parts and components; sales of mechanical and electrical equipment; sales of new energy vehicles; sales of special equipment; sales of mechanical parts and components; sales of mining machinery; sales of metal products; sales of metal structures; manufacturing of metal structures; manufacturing of specialized machinery for agriculture, forestry, animal husbandry, and fishery; installation and repair of specialized machinery for agriculture, forestry, animal husbandry, and fishery; sales of agricultural machinery; sales of metal materials. Licensed items: Road motor vehicle production; construction engineering construction (excluding nuclear power station construction and operation, and civil airport construction); construction labor subcontracting; highway management and maintenance. (Shall not engage in activities prohibited or restricted by national and municipal industrial policies.)