| 4669 | Board of directors for other business activities |
| 0710 | Iron ore mining |
| 0721 | Uranium and thorium ore mining |
| 0722 | Exploitation of other metals |
| 2410 | Manufacture of iron, steel and ferrous alloys |
| 2420 | Manufacture of steel pipes, pipes, pipe fittings and profiles |
| 2431 | Cold drawing |
| 2432 | Cold rolling |
| 2511 | Manufacture of metal components |
| 2591 | Forging, stamping, pressing and rolling metals; powder metallurgy |
| 2592 | Mechanical processing; plating and metal treatment |
| 2599 | Manufacture of products from other uncategorized prefabricated metals |
| 3020 | Manufacture of locomotives and wagons |
| 3290 | Production of other industrial goods |
| 3312 | Repair of machinery and equipment |
| 3314 | Repair of electrical equipment |
| 3320 | Installation of industrial machinery and equipment |
| 4101 | Xay dung de o |
| 4102 | Make use of it |
| 4299 | Grinding and grinding other products |
| 4311 | Demolition |
| 4312 | Site preparation |
| 4321 | Installation of electrical systems |
| 4322 | Installation of water supply and drainage, heating and air conditioning systems |
| 4329 | Installation of other construction systems |
| 4330 | Completion of construction works |
| 4649 | Board of buon do dung khac for the family |
| 4651 | The Department of Sophisticated Garment Design is outside the scope of implementation |
| 4652 | Ban buon thiet bi va Linh kien dien tu vien thong |
| 4659 | Ban buon may moc thiet bi va phu tung may khac |
| 4662 | Metallic and optical metallic block board |
| 4663 | Board of buon vat lieu thiet bi lap dat khac in milling capacity |
| 4933 | Van tai hang Hoa bang duong bo |
| 6110 | Wired telecommunications activities |
| 7020 | Management consulting activities |
| 7110 | Relevant architectural and technical consulting activities |
| 7120 | Technical testing and analysis |
| 7410 | Dedicated design activity |
| 7490 | Other unclassified professional, scientific and technological activities |
| 7710 | Rent a motor vehicle |
| 7730 | Leasing and financial leasing of machinery, equipment and other tangible objects |
| 7810 | Operations of job search service establishments |
| 7820 | Temporary labor sublease activities |
| 7830 | Other human resource management and supply activities |
| 8299 | Other unclassified business support activities |
| 8559 | Other unclassified education |