General items: technical services, technology development, technical advice, technology exchange, technology transfer, technology diffusion; development of smart robots; sale of smart robots; manufacture of electronic components and parts of vehicles; retailing of spare parts for vehicles; sale of new energy vehicles; manufacturing of batteries; sale of batteries; instrumentation; sale of machinery; sale of machinery parts; processing of machinery parts; sale of machinery parts; sale of spare parts; export and import of medical equipment; sale of plastics; sale of plastics products; sale of plastics products; export and import of medical equipment; sale of plastics products; sale of plastics products; sale of plastics and other materials; sale of plastics; sale of plastics; sale of plastics; sale of plastics; sale of plastics; sale of plastics