Railway locomotive and rolling stock manufacturing; railway locomotive and rolling stock repair; special equipment installation, modification, and repair; special equipment manufacturing; road motor vehicle production; inspection and testing services. General items: urban rail transit equipment manufacturing; high-speed rail equipment and parts manufacturing; railway locomotive and rolling stock parts manufacturing; mechanical parts and components processing; import and export of goods; new energy vehicle sales; non-residential real estate leasing; mechanical equipment leasing; metrology technical services; technical services, technology development, technical consulting, technology exchange, technology transfer, and technology promotion.