The business scope includes licensed projects: Construction engineering construction; Residential interior decoration. General projects: Research and development of new materials and technologies; R&D of mechanical equipment; R&D of resource recycling technology; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Sales of plastic products; Sales of metal products; Sales of machinery and equipment; Sales of building materials; Sales of special equipment for environmental protection; General mechanical equipment installation services; Machinery and equipment leasing; Leasing services (excluding licensing services); Professional design services; Technology import and export; Import and export of goods; Import and export agent; Manufacturing of new building materials.