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.)

Snow and ice sports equipment manufacturing.

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

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.

The main business scope is the manufacturing and sales of mining machinery and accessories (if approval is required or a

Coding equipment technology, technical research and technology development of computer software and hardware; wholesale and retail: coding equipment, inkjet printers, laser machines and accessories, consumables, electronic products, packaging machinery, packaging materials; marking equipment maintenance; visual system inspection Development and sales of equipment; manufacturing of control and testing instruments and industrial automation control system devices; installation and sales of mechanical equipment; inspection and testing services.

Manufacturing of automatic packaging machinery, grain machinery and equipment, and automatic control products; self-support and agency for the import and export business of various commodities and technologies (except for commodities and technologies that involve pre-licensing approval projects, state restrictions on operations, and prohibition of import and export). (Projects that are subject to approval in accordance with the law can only carry out business activities after being approved by relevant departments)

Printing of other printed matter. Production and sales: carton, paper box; technological development of environmentally friendly packaging materials.

Gear transmission device, reducer, motor, coupling, electric roller, iron and steel castings, oil drilling and production special equipment, special equipment for environmental protection, agricultural drying machinery, animal husbandry machinery, mechanized agricultural and gardening machinery, bearings, gears and transmission parts manufacturing, marketing; Fire fighting metal products, commercial weighing apparatus wholesale.

Other printed matter (the validity period of the printing license is long-term); production of plastic products (except for items prohibited by the state); import and export trade; production: medical equipment; purchase and sale: sanitary materials, daily necessities, masks (excluding medical equipment); production and sales: melting Spray cloth.