Metal surface treatment and heat treatment processing; metal daily necessities manufacturing; metal cutting processing services; material handling equipment manufacturing; mechanical parts and parts processing; industrial robot manufacturing; textile special equipment manufacturing; sewing machinery manufacturing; automobile parts and accessories manufacturing; distribution switch control equipment manufacturing ; Power transmission, distribution and control equipment manufacturing; Mechanical and electrical equipment manufacturing; Industrial control computers and systems manufacturing; Information security equipment manufacturing; Communication equipment manufacturing; Network equipment manufacturing; Intelligent vehicle equipment manufacturing; Sales of agricultural and sideline products; Sales of knitted textiles and raw materials; Wholesale of clothing and apparel; Wholesale of shoes and hats; Daily necessities Sales of department stores; sales of coal and products; sales of petroleum products (excluding hazardous chemicals); sales of metal materials; sales of metal ores; sales of building materials; sales of rubber products; sales of machinery and equipment; wholesale of auto parts and accessories; wholesale of hardware products; sales of chemical products (excluding licensed chemical products) Sales of electrical equipment; sales of metal products; sales of intelligent material handling equipment; sales of intelligent warehousing equipment; sales of intelligent power transmission, distribution and control equipment; wholesale of daily necessities; sales of knitted textiles; retail of clothing and apparel; retail of shoes and hats; sales of daily necessities; retail of automobile spare parts; retail of motorcycles and spare parts; Sales of communication equipment; retail of hardware products; sales of mechanical parts and components; sales of distribution switch control equipment; sales of industrial control computers and systems; sales of industrial robots; sales of sewing machinery; sales of special textile equipment; sales of power electronic components; sales of intelligent vehicle-mounted equipment; nonferrous metals Alloy sales; information security equipment sales; network equipment sales; import and export of goods; technology import and export; maritime international cargo transportation agency; domestic cargo transportation agency; air international cargo transportation agency; land international cargo transportation agency; general cargo warehousing services (excluding hazardous chemicals, etc., which require license approval projects); Internet security services; information system integration services; information technology consulting services; computer system services; property management; housing leasing; non-residential real estate leasing; machinery and equipment leasing; information consulting services (excluding licensed information consulting services); packaging services; with own funds from Investment activities; labor services (excluding labor dispatch); safety technology prevention system design and construction services; industrial design services; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; mechanical equipment research and development; power distribution switch control equipment research and development; automobile parts research and development. Licensed projects: installation, maintenance and testing of power transmission, power supply and power receiving facilities; construction projects (except nuclear power plant construction and operation, civil airport construction); accommodation services; catering services; real estate development and operation.