General projects: technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; sales of mechanical and electrical equipment; sales of mechanical parts and components; import and export of goods; import and export of technology; import and export agency; sales of metal materials; manufacturing of industrial automatic control system devices; manufacturing of hydraulic power machinery and components; manufacturing of terminal measurement equipment; manufacturing of computer software, hardware and peripheral equipment; manufacturing of communication equipment; manufacturing of radio and television equipment (