| 4210003 | Tunnels Contracting | Contracting and building works | Commercial | |
| 4210004 | Railways Contracting | Contracting and building works | Commercial | |
| 4210005 | Helicopter Landing Pad (Helipad) Installation | Contracting and building works | Professional | |
| 4210006 | Road Marking Contracting | Contracting and building works | Professional | |
| 4210007 | Bridges & Dams Contracting | Contracting and building works | Commercial | |
| 4220101 | Electric Power Lines Contracting | Contracting and building works | Commercial | |
| 4220102 | Power Stations Contracting & Repairing | Contracting and building works | Commercial | |
| 4220103 | Wireless Communication Towers Contracting | Contracting and building works | Commercial | |
| 4220104 | Communication Lines Contracting | Contracting and building works | Commercial | |
| 4220201 | Desalination Plants Contracting | Contracting and building works | Commercial | |
| 4220202 | Water Pipelines & Station Contracting | Contracting and building works | Commercial | |
| 4220303 | Sewage & Drainage Contracting | Contracting and building works | Commercial | |
| 4220401 | Water Well Drilling Contracting | Contracting and building works | Professional | |
| 4220902 | Oil & Gas Civil Structural Works Contracting | Contracting and building works | Commercial | |
| 4220905 | District Cooling Contracting | Contracting and building works | Commercial | |
| 4220906 | Oil & Gas Mechanical works Contracting | Contracting and building works | Commercial | |
| 4220907 | Oil & Gas Electrical Works Contracting | Contracting and building works | Commercial | |
| 4220908 | Oil & Gas Instrumentation & Controls Contracting | Contracting and building works | Commercial | |
| 4290101 | Ports & Marine Construction Contracting | Contracting and building works | Commercial | |
| 4290902 | Dredging & Reclamation Contracting | Contracting and building works | Commercial | |
