Recycling of renewable resources (excluding productive scrap metal); research and development of resource recycling technology; sales of plastic products; manufacturing of plastic products; sales of metal products; sales of chemical products (excluding licensed chemical products); processing and treatment of metal waste and scraps; sales of non-ferrous metal alloys; precious metal smelting; sales of metal chains and other metal products; sales of metal materials; sales of metal ores; sales of paper products; online sales (excluding goods that require a license for sale); import and export of goods or technology; loading and unloading services; micro and small passenger car rental services; road freight transportation (excluding dangerous goods); technical services, technology development, technical consultation, technology exchange, technology transfer, and technology promotion; computer system services; IoT application services; information consulting services (excluding licensed information consulting services); specialized design services; packaging services; general warehousing services (excluding hazardous chemicals and other projects requiring licensing) (projects that require approval by relevant departments can only be carried out after obtaining such approval)