Technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; import and export of goods; import and export of technology; import and export agency; high-speed rail equipment and accessories manufacturing; railway locomotive and vehicle parts manufacturing; CNC machine tool manufacturing; additive manufacturing equipment manufacturing; industrial control computer and system manufacturing; industrial automatic control system device manufacturing; machine tool functional parts and accessories manufacturing. Permitted items: Civil aircraft parts design and production. (Shall not engage in business activities prohibited or restricted by national and municipal industrial policies.)