Manufacturing of electronic (physical) equipment and other electronic equipment, research and development of mechanical equipment, research and development of auto parts, research and development of metal products, manufacturing of general parts, manufacturing of gears, gear reducers, and gearboxes, manufacturing of auto parts and accessories, manufacturing of railway locomotive and rolling stock parts, manufacturing of high-speed rail equipment and parts, manufacturing of urban rail transit equipment, manufacturing of metal processing machinery, manufacturing of hydraulic power machinery and components, manufacturing of electronic components and electromechanical component equipment, processing of mechanical parts and components, metal surface treatment and heat treatment, sales of railway locomotive and rolling stock parts, sales of rail transit engineering machinery and parts, sales of gears, gear reducers, and gearboxes, sales of mechanical parts and components, sales of mechanical equipment, sales of metal products, installation services for general mechanical equipment, repair of general equipment, repair and maintenance of motor vehicles, technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion, leasing of mechanical equipment, leasing of non-residential real estate, import and export of goods, import and export of technology. Licensed items: research and development and manufacturing of rocket launch equipment, design and production of civil aircraft parts.