| Sr | Code | Description |
| 1 | BC02 | Building restoration and conservation |
| 2 | CE08 | Installation, maintenance and repair of oil and gas pipelines. |
| 3 | CE10 | General Civil Engineering Works, Slope Protection System, Concrete Repairs, Soil Investigation and Stabilization, Landscaping & Horticulture, Reclamation Works, General Buildings and Maintenance, Waterproofing. |
| 4 | EE02 | Security, Safety Surveillance System |
| 5 | EE04 | Low Voltage Installation |
| 6 | EE07 | Telecommunication Installations |
| 7 | EE10 | Miscellaneous Specialized |
| 8 | EE11(vi) | Solar Installation |
| 9 | CE04(ii) | Irrigation & Flood Control Systems |
| 10 | BC01 | Construction of buildings and industrial plants using prefabricated components and systems. Construction of steel framed buildings and industrial plants. Airports Terminal buildings, Satellite buildings, cargo terminals, air traffic control towers, contact piers, passenger loading bridges . |
| 11 | CE01 | Road and Pavements, Drainage & Retaining Structure, Signcraft Installation. |
| 12 | CE09 | Sewerage Works, Water Supply. |
| 13 | EE01 | Sound System |
| 14 | EE03 | Building Automation System & Energy Generation System |
| 15 | EE06 | Specialized Lighting System |
| 16 | EE08 | External Telecommunication Works |
| 17 | EE11(ii) | Solar Energy |
| 18 | EE11(xxv) | Solar Power |
| 19 | CE04(iv) | Water Retaining Structures |
