Hardware product manufacturing; Technical services, technical development, technical consulting, technical exchange, technology transfer, technical promotion; Electronic component manufacturing; Electronic component and electromechanical component equipment manufacturing; Marine engineering equipment manufacturing; Railway locomotive and rolling stock parts manufacturing; General equipment manufacturing (excluding special equipment manufacturing); Counting instrument manufacturing for transportation equipment and production use; Mechanical and electrical equipment manufacturing; Auto parts and accessories manufacturing; Environmental protection special equipment manufacturing; Industrial robot manufacturing; General valve and cock manufacturing (excluding special equipment manufacturing); Power electronic component manufacturing; Plastic product manufacturing; Pump and vacuum equipment manufacturing; New energy prime mover equipment manufacturing; Electronic measuring instrument manufacturing; Power distribution switchgear equipment manufacturing; Fastener manufacturing; General parts manufacturing; Rubber product manufacturing; Special equipment manufacturing (excluding licensed professional equipment manufacturing); Electrical equipment sales; Metal product sales; Import and export of goods.