| 83311 | Integrated engineering services for the construction of residential buildings | |
| 83312 | Integrated engineering services for the construction of roads | |
| 83312 | Integrated engineering services for the construction of streets | |
| 83312 | Integrated engineering services for the construction of subways | |
| 83312 | Integrated engineering services for the construction of the construction of long-distance power lines (cables) | |
| 83319 | Integrated engineering services for the construction of traffic control systems | |
| 83312 | Integrated engineering services for the construction of tunnels | |
| 83312 | Integrated engineering services for the construction of waterways | |
| 83312 | Integrated engineering services for the construction of waterworks | |
| 91137 | Integrated facilities for flood control, administrative services related to the construction of | |
| 91137 | Integrated facilities for flood control, administrative services related to the design of | |
| 91137 | Integrated facilities for flood control, administrative services related to the improvement of | |
| 91137 | Integrated facilities for flood control, administrative services related to the operation of | |
| 91137 | Integrated facilities for flood control, administrative services related to the planning of | |
| 91137 | Integrated facilities for irrigation, administrative services related to the construction of | |
| 91137 | Integrated facilities for irrigation, administrative services related to the design of | |
| 91137 | Integrated facilities for irrigation, administrative services related to the improvement of | |
| 91137 | Integrated facilities for irrigation, administrative services related to the operation of | |
| 91137 | Integrated facilities for irrigation, administrative services related to the planning of | |
| 91137 | Integrated facilities for navigation, administrative services related to the construction of | |
| 91137 | Integrated facilities for navigation, administrative services related to the design of | |
| 91137 | Integrated facilities for navigation, administrative services related to the improvement of | |
| 91137 | Integrated facilities for navigation, administrative services related to the operation of | |
| 91137 | Integrated facilities for navigation, administrative services related to the planning of | |
| 91137 | Integrated facilities for power generation, administrative services related to the construction of | |
| 91137 | Integrated facilities for power generation, administrative services related to the design of | |
| 91137 | Integrated facilities for power generation, administrative services related to the improvement of | |
| 91137 | Integrated facilities for power generation, administrative services related to the operation of | |
| 91137 | Integrated facilities for power generation, administrative services related to the planning of | |
| 91137 | Integrated facilities for recreation, administrative services related to the construction of | |
| 91137 | Integrated facilities for recreation, administrative services related to the design of | |
| 91137 | Integrated facilities for recreation, administrative services related to the improvement of | |
| 91137 | Integrated facilities for recreation, administrative services related to the operation of | |
| 91137 | Integrated facilities for recreation, administrative services related to the planning of | |
| 83563 | Integrated mechanical systems, testing and analysis of | |
| 83141 | Integration, hardware and software, consulting services concerning | |
| 48265 | Integrators | |
| 82130 | Intellectual property rights consultancy services | |
| 82130 | Intellectual property rights, certification of | |
| 82130 | Intellectual property rights, drafting of | |