General business items: Material handling equipment manufacturing; Material handling equipment sales; Mining machinery manufacturing; Mining machinery sales; Mechanical and electrical equipment manufacturing; Special equipment manufacturing (excluding licensed special equipment manufacturing); General mechanical equipment installation services; Special equipment repair; Mechanical equipment sales; Intelligent material handling equipment sales; Mechanical equipment research and development; Professional design services; Technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; Electrical machinery special equipment manufacturing; Motor manufacturing; Rubber products manufacturing; Rubber products sales; Bearing, gear and transmission component sales; Metal wire rope and its products sales; General parts manufacturing; Lubricating oil processing and manufacturing (excluding hazardous chemicals); Lubricating oil sales; Mechanical and electrical equipment sales; Labor protection supplies sales; Electrical equipment sales; Traffic and public management metal sign manufacturing; Wire and cable operation; Refractory material sales; Building materials sales; Asbestos products sales; Sealing filler sales; Seal sales; Fastener sales; Metal material sales; Chemical product sales (excluding licensed chemical products); Instrument sales; Hardware products retail; Intelligent power distribution and control equipment sales; Power distribution switchgear equipment sales; Metal chain and other metal products sales; Metal tool sales; Metal structure manufacturing; Pulp sales; Pneumatic power machinery and component sales; Plastic products sales; Sugar crop planting; Fire-fighting equipment sales; Traffic and public management sign sales; Security equipment sales; Construction engineering machinery sales; Environmental protection special equipment sales; Hydraulic power machinery and component sales; Daily-use department store sales; Internet sales (excluding goods that require sales permits); Railway locomotive vehicle parts sales; High-speed rail equipment, accessories sales; Electrical instrument sales; Tire sales; Network equipment sales; Power electronic component sales; Electrical accessory sales; Industrial textile products sales; Special labor protection supplies sales; Construction steel bar products sales; Non-metallic ore and products sales; Valve and cock sales; Pump and vacuum equipment sales; Non-ferrous metal alloy sales; IoT equipment sales; Digital video surveillance system sales; Computer software and hardware and auxiliary equipment retail; Computer software and hardware and auxiliary equipment wholesale; Electrical signal equipment device sales; Metal ore sales; Coal and products sales; Special chemical product sales (excluding licensed chemical products); General equipment repair; IoT technical services; IoT application services