Railway locomotive and rolling stock parts manufacturing; railway locomotive and rolling stock parts sales; glass manufacturing; metal matrix composites and ceramic matrix composites sales; rail transit green composite materials sales; road cargo transportation for ordinary freight vehicles with a total mass of 4.5 tons and below (excluding online freight and dangerous goods); technical services, technology development, technical consulting, technical exchange, technology transfer, technology promotion; rail transit special equipment, key systems and components sales; railway transportation auxiliary activities; mechanical and electrical equipment manufacturing; mechanical and electrical equipment sales; lighting fixtures sales; lighting fixtures manufacturing; general equipment repair; battery manufacturing; battery sales; gas, liquid separation and purification equipment sales; energy storage technical services; high-speed rail equipment and parts manufacturing; high-speed rail equipment and parts sales; rail transit communication signal system development; labor services (excluding labor dispatch); mechanical equipment research and development; electronic products sales; goods import and export; urban rail transit equipment manufacturing; intelligent vehicle equipment manufacturing; housing leasing; rail transit operation management system development; high-performance fibers and composite materials sales; rail transit engineering machinery and parts sales; railway locomotive and rolling stock sales; new energy prime mover equipment manufacturing; new energy prime mover equipment sales; power electronic components sales; railway transportation infrastructure equipment sales; railway transportation equipment sales.