Road cargo transportation (excluding dangerous goods). General items: manufacturing of specialized chemical products (excluding hazardous chemicals); sales of specialized chemical products (excluding hazardous chemicals); manufacturing of ecological environment materials; manufacturing of gas, liquid separation and purification equipment; sales of gas, liquid separation and purification equipment; solid waste treatment; water pollution control; water environmental pollution prevention services; environmental protection monitoring; sales of environmental protection specialized equipment; road cargo transportation by general freight vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods); leasing of transportation equipment; sales of environmental monitoring specialized instruments; manufacturing of metal structures; manufacturing of metal materials; sales of metal materials; sales of new metal functional materials; sales of metal products; sales of metal wire ropes and their products; sales of metal structures; sales of metal accessories for construction; sales of metal tools; sales of plastic products; sales of engineering plastics and synthetic resins; sales of paper products; sales of building materials; sales of building decoration materials; sales of lightweight building materials; sales of construction machinery; sales of steel bars for construction; sales of building blocks; environmental sanitation management (excluding environmental quality monitoring, pollution source inspection, and disposal of municipal solid waste, construction waste, and kitchen waste); sales of mechanical equipment; retail of auto parts; sales of auto decoration products; sales of daily necessities; sales of household appliances; sales of textiles and knitwear; sales of office supplies; sales of instruments; retail of hardware products; wholesale of hardware products; sales of rubber products; sales of coal and its products; trade brokerage; domestic trade agency; import and export agency; offshore trade operations; sales agency.