Mining machinery manufacturing; Industrial robot manufacturing; Generator and generator set sales; Mechanical and electrical equipment manufacturing; Power electronic components sales; Charging pile sales; Instrument sales; General equipment manufacturing (excluding special equipment manufacturing); Material handling equipment manufacturing; Environmental protection special equipment manufacturing; Environmental protection special equipment sales; Material handling equipment sales; Machinery and equipment leasing; Textile special equipment manufacturing; Textile special equipment sales; Technical services, technical development, technical consulting, technical exchange, technology transfer, technology promotion; Mining machinery sales; Construction engineering machinery sales; Construction engineering machinery manufacturing; Metal chains and other metal products sales; Hand cart and animal-drawn vehicle sales; Advanced power electronic device sales; Special chemical products sales (excluding hazardous chemicals); Railway locomotive and rolling stock parts manufacturing; Railway transportation infrastructure equipment sales; Railway locomotive and rolling stock parts sales; Electrical signal equipment device sales; Procurement agency services; Metal structure sales; Metal material sales; Construction steel bar product sales; Bearing sales; Metal structure manufacturing; Hardware products wholesale; Hardware products retail; Building materials sales; Wire and cable operations; New material technology research and development; New energy original equipment sales; Resource regeneration technology research and development; Power distribution switchgear equipment sales; Electronic measuring instrument sales; Electric power dynamometer motor sales; Pump and vacuum equipment sales; Technology import and export; Import and export of goods; Special-purpose equipment manufacturing (excluding licensed special-purpose equipment); General mechanical equipment installation services; Electronic components and electromechanical component equipment sales; Intelligent material handling equipment sales; Business agency services.