Our business scope includes: Technical service, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Engineering management services; Software development; Sales of mobile terminal equipment; Sales agent; Artificial intelligence application software development; Sales of light construction materials; Sales of building materials; Sales of metal products; Sales of building decoration materials; Sales of non-metallic minerals and products; Sales of concrete structural members; Fastener sales; Metal structure sales; R&D of metal products; Engineering technical services; Sales of Class I medical devices; Sales of wearable intelligent devices; 5G communication technology services; Energy storage technology services; Sales of solar thermal power generation products; Sales of solar thermal utilization products; Sales of solar thermal utilization equipment; Solar power generation technology services; Satellite remote sensing data processing; Satellite communication service; Sales of satellite mobile communication terminals; Sales of metal accessories for construction; Sales of anti-corrosion materials; Sales of thermal insulation materials; Sales of cement products; Sales of asbestos products; Sales of asbestos cement products; Research and development of hardware products; Retail of hardware products; Sales of special labor protection articles; Sales of labor protection articles; Labor service.