Research and development of new materials technology; manufacture of plastic products; manufacture of engineering plastics and synthetic resins; sale of plastic products; sale of engineering plastics and synthetic resins; manufacture of specialized chemical products (excluding hazardous chemicals); sale of specialized chemical products (excluding hazardous chemicals); recycling of renewable resources (excluding production scrap metal); processing of renewable resources; sale of renewable resources; research and development of resource regeneration and utilization technology; technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion; installation and maintenance of industrial robots (except for licensed businesses, operations can be carried out in accordance with the law as long as they are not prohibited or restricted by laws and regulations) Permitted projects: manufacture of wires and cables (business activities must be conducted after obtaining approval from relevant departments, specific business items shall be subject to the approval documents or permits issued by relevant departments)