General equipment manufacturing (excluding special equipment manufacturing); Mechanical equipment research and development; Mechanical equipment sales; High-speed rail equipment and parts manufacturing; High-speed rail equipment and parts sales; Metal cutting processing services; Metal processing machinery manufacturing; Mold manufacturing; Mold sales; Mechanical parts and components sales; Mechanical parts and components processing; General parts manufacturing; Technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; Information consulting services (excluding licensed information consulting services); Road freight transport of general cargo vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); Special equipment manufacturing (excluding licensed special equipment manufacturing).