Software development; urban rail transit equipment manufacturing; railway locomotive and rolling stock parts manufacturing; high-speed rail equipment and parts manufacturing; automotive parts and accessories manufacturing; mechanical and electrical equipment manufacturing; agricultural machinery manufacturing; motor and its control system research and development; motor manufacturing; electronic component manufacturing; refrigeration and air conditioning equipment manufacturing; household appliance manufacturing; cloud computing equipment manufacturing; railway locomotive and rolling stock parts sales; high-speed rail equipment and parts sales; new energy vehicle electrical accessory sales; electrical mechanical equipment sales; refrigeration and air conditioning equipment sales; electronic components wholesale; household appliance sales; cloud computing equipment sales; agricultural machinery sales; general equipment repair; information system integration services; technical services, technology development, technical consulting, technical exchange, technology transfer, technology promotion; mechanical equipment leasing. Permitted items: inspection and testing services; various construction engineering activities; technology import and export; goods import and export.