| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | BTP Consultants | Check engineering | 0 |
| 2 | BTP Consultants | Check engineering | 1 |
| 3 | BTP Consultants | Check engineering | 0 |
| 4 | Bureau Sécuritas | Check engineering | 1 |
| 5 | Bureau Veritas Monaco | Check engineering | 2 |
| 6 | Büro Sattler | Check engineering | 1 |