| Sr | Code | Description |
| 1 | CE08 | Installation, maintenance and repair of oil and gas pipelines. |
| 2 | CE09 | Sewerage Works, Water Supply. |
| 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 | CE01 | Road and Pavements, Drainage & Retaining Structure, Signcraft Installation. |
| 5 | EE01 | Sound System |
| 6 | EE02 | Security, Safety Surveillance System |
| 7 | EE03 | Building Automation System & Energy Generation System |
| 8 | EE04 | Low Voltage Installation |
| 9 | EE06 | Specialized Lighting System |
| 10 | EE07 | Telecommunication Installations |
| 11 | EE08 | External Telecommunication Works |
| 12 | EE09 | IT & Software Engg |
| 13 | EE10 | Miscellaneous Specialized |
| 14 | EE11(i) | Solar |
| 15 | EE11(ii) | Solar Energy |
| 16 | EE11(iii) | Solar Energy system |
| 17 | CE04(v) | Irrigation Only |
| 18 | CE11(i) | General engineering Works only |
| 19 | EE11(vv) | Installation of Solar Power LED Street Lighting System |
| 20 | EE11(xvii) | Solar Works |
| 21 | CE11(vii) | Infrastructure Development Works |
| 22 | EE11(viiii) | General Electronics Works |
| 23 | CE11(ix) | General Building Works |
