Domestic trade agency; import and export of goods; atmospheric environmental pollution prevention services; water environmental pollution prevention services; soil environmental pollution prevention services; air pollution control; water pollution control; solid waste treatment; soil pollution remediation and restoration services; environmental protection consulting services; energy storage technical services; resource recycling service technology consulting; manufacturing of environmental protection specialized equipment; manufacturing of dust removal technical equipment; manufacturing of coal-fired flue gas desulfurization and denitrification equipment; manufacturing of specialized equipment (excluding licensed specialized equipment manufacturing); manufacturing of industrial automatic control system devices; manufacturing of plastic products; manufacturing of plastic packaging boxes and containers; manufacturing of engineering plastics and synthetic resins; manufacturing of glass fiber reinforced plastic products; manufacturing of plastic processing specialized equipment; manufacturing of gas, liquid separation and purification equipment; sales of environmental protection specialized equipment; sales of coal-fired flue gas desulfurization and denitrification equipment; sales of gas, liquid separation and purification equipment; sales of plastic products; sales of engineering plastics and synthetic resins; sales of glass fiber reinforced plastic products; sales of plastic processing specialized equipment; sales of plastic packaging containers and tools for food; sales of industrial automatic control system devices; engineering management services; engineering technical services (excluding planning, survey, design, and supervision); industrial engineering design services; professional design services; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; research and development of new material technologies; promotion services for new material technologies; foreign contracting projects; general mechanical equipment installation services; intelligent water system development; road cargo transportation by general freight vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods). Licensed items: road cargo transportation (excluding dangerous goods).