|
| 83331 | Engineering advisory and pre-design services for the construction of commercial buildings | |
| 83332 | Engineering advisory and pre-design services for the construction of dams | |
| 83332 | Engineering advisory and pre-design services for the construction of elevated highways | |
| 83332 | Engineering advisory and pre-design services for the construction of harbours | |
| 83332 | Engineering advisory and pre-design services for the construction of highways | |
| 83331 | Engineering advisory and pre-design services for the construction of industrial buildings | |
| 83333 | Engineering advisory and pre-design services for the construction of industrial plant and processes | |
| 83332 | Engineering advisory and pre-design services for the construction of irrigation works | |
| 83332 | Engineering advisory and pre-design services for the construction of local cables and related works | |
| 83332 | Engineering advisory and pre-design services for the construction of local pipelines and related works | |
| 83332 | Engineering advisory and pre-design services for the construction of long-distance communication lines | |
| 83332 | Engineering advisory and pre-design services for the construction of long-distance pipelines | |
| 83332 | Engineering advisory and pre-design services for the construction of long-distance power lines (cables) | |
| 83331 | Engineering advisory and pre-design services for the construction of non-residential buildings | |
| 83332 | Engineering advisory and pre-design services for the construction of outdoor recreation facilities | |
| 83332 | Engineering advisory and pre-design services for the construction of outdoor sports facilities | |
| 83333 | Engineering advisory and pre-design services for the construction of power plants | |
| 83332 | Engineering advisory and pre-design services for the construction of railways | |
| 83331 | Engineering advisory and pre-design services for the construction of residential buildings | |
| 83332 | Engineering advisory and pre-design services for the construction of roads | |
| 83332 | Engineering advisory and pre-design services for the construction of streets | |
| 83332 | Engineering advisory and pre-design services for the construction of subways | |
| 83332 | Engineering advisory and pre-design services for the construction of tunnels | |
| 83332 | Engineering advisory and pre-design services for the construction of waterways | |
| 83332 | Engineering advisory and pre-design services for the construction of waterworks | |
| 83339 | Engineering advisory and pre-design services for traffic control systems | |
| 83341 | Engineering design services for buildings | |
| 83342 | Engineering design services for civil engineering works | |
| 83343 | Engineering design services for industrial plant and processes | |
| 83349 | Engineering design services for other projects | |
| 83351 | Engineering services during the construction and installation phase of buildings | |
| 83352 | Engineering services during the construction and installation phase of civil engineering works | |
| 83353 | Engineering services during the construction and installation phase of industrial plant and processes | |
| 83359 | Engineering services during the construction and installation phase of other projects | |
| 83391 | Engineering services for buildings, other | |
| 83392 | Engineering services for civil engineering works, other | |
| 83393 | Engineering services for industrial plant and processes, other | |
| 83399 | Engineering services for other projects, other | |
| 83392 | Engineering services n.e.c,. for the construction of local pipelines and related works | |
| 83393 | Engineering services n.e.c., for manufacturing constructions | |
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