1. ABB Group
2. ABS Group of Companies Inc.
3. Aker Solutions ASA
4. Applus Services SA
5. Asset Integrity Engineering
6. Axess Group
7. Baker Hughes Company
8. Bureau Veritas SA
9. Dacon Inspection Technologies Co. Ltd.
10. Det Norske Veritas Group
11. Dexon Technology PLC
12. DNV AS
13. EM Topco Limited
14. EM&I Ltd.
15. Fluor Corporation
16. FORCE Technology Norway AS
17. Genesis Oil and Gas Consultants Ltd.
18. Intertek Group PLC
19. John Wood Group PLC
20. LifeTech Engineering Ltd.
21. Metegrity Inc.
22. Oceaneering International Inc.
23. Rosen Swiss AG
24. SGS Soci?t? G?n?rale de Surveillance SA
25. TechnipFMC plc
26. Tuv Nord Group
27. Twi Ltd.
28. Velosi Asset Integrity Ltd.