Licensed items: import and export of goods, technology import and export, power generation, transmission, power supply business, various engineering construction activities (projects that must be approved in accordance with the law, business activities can be carried out after approval by relevant departments, and specific business projects are subject to the approval results) General items: machinery and equipment sales, mining machinery sales, mining machinery manufacturing, general equipment manufacturing (excluding special equipment manufacturing), general machinery and equipment installation services, metal structure manufacturing, metal structure sales, ferrous metal casting (except for those subject to legal approval Outside the project, carry out business activities independently according to the business license)

Railway special machinery and equipment research and development, production, manufacturing, sales, maintenance; machinery parts processing; railway, highway and bridge construction engineering contracting, design, construction, consulting, technical services; railway machinery and equipment leasing; goods import and export; general machinery, hardware Sales of tools, auto parts, locomotives and vehicle parts. (Projects that are subject to approval in accordance with the law can be operated only after being approved by relevant departments.)

Identification technology development; retail machinery and equipment; goods import and export, technology import and export. (Enterprises independently select business projects and carry out business activities in accordance with the law; projects that are subject to approval in accordance with the law, after approval by relevant departments, carry out business activities in accordance with the approved content; they are not allowed to engage in business activities that are prohibited and restricted by the industrial policy of the district.)

Spinal carding equipment technology development, design, manufacturing, sales, health care products sales, health care services. (Projects that are subject to approval in accordance with the law can be operated only after being approved by relevant departments.)

Snow and ice sports equipment manufacturing.

Professional production of high-density polyethylene (HDPE) series pipes, PPR, PVC, geothermal pipes, threading pipes, PE water supply pipes integrating trade, research and development, production, sales, construction and installation, and service.

Processing and manufacturing of tinplate cans; import and export trade.

Production, installation, manufacture and sale of wind power generating units; Fan engineering, installation and commissioning and technical services; Wholesale, agency, import and export of wind power components and related supporting services; Investment, development, construction and operation of wind power projects

Medical equipment, wound care materials, surgical supplies, daily-use plastic products (except for double-layer double-frame doors and windows of various types and plastic doors and windows of single cavity structure, ultra-thin plastic bags), masks (non-medical ) Manufacturing, sales and import and export, sales of disinfection products.

Production, research and development, leasing and sales of sanitation facilities and municipal facilities; The design and planning of garden scenic spots; Production, design, leasing and installation of board houses, solar heating equipment and environmental friendly mobile public toilets; Steel structure design and installation; Architectural decoration design and construction (for projects subject to approval according to law, business activities can only be carried out after approval by relevant departments); Distribution: building materials, decorative materials, hardware, mechanical and electrical equipment, chemical products (excluding dangerous chemicals).

Production and sales of medical equipment; import and export of goods. (Projects subject to approval in accordance with the law can only be carried out after approval by relevant departments)**

Packaging products manufacturing, other printed matter. Packaging products manufacturing, other printed matter. Engage in import and export business (except for national restrictions); production: masks, medical devices; sales (including Internet sales): masks, medical devices.