Production of Class II medical devices; production of Class III medical devices; operation of Class III medical devices. General projects: software development; goods import and export; technology import and export; additive manufacturing; additive manufacturing equipment manufacturing; additive manufacturing equipment sales; 3D printing services; synthetic material manufacturing (excluding hazardous chemicals); synthetic material sales; new material technology research and development; new material technology promotion services; 3D printing basic material sales; computer department System services; manufacturing of auto parts and accessories; retail of auto parts; manufacturing of motorcycle parts; wholesale of motorcycles and parts; sales of intelligent robots; sales of electronic products; manufacturing of arts and crafts and ceremonial items (except ivory and its products); manufacturing of plastic products; sales of plastic products; manufacturing of metal chains and other metal products; gold Sales of products; domestic trade agency; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; mechanical equipment leasing; industrial design services; hardware product research and development; mechanical and electrical equipment sales; engineering and technology research and experimental development (except for human stem cells, gene diagnosis and treatment technology development and application, in China’s rare and unique precious and fine varieties); mechanical equipment research and development; mechanical equipment sales; professional design services; mechanical and electrical equipment manufacturing; hardware product manufacturing; special equipment manufacturing (excluding licensed professional equipment manufacturing); metal processing machinery manufacturing; metal cutting processing services; mechanical parts and parts processing; and automotive parts research and development.