Corporate Members
| Air Liquide Global E&C Solutions Germany GmbH | Aker Solutions |
| Amines & Plasticizers Ltd | Arkema France |
| Atlas Copco Energas GmbH | Axens |
| BASF SE | Bechtel Ltd. |
| BP Exploration Operating Co. Ltd. | ConocoPhillips LNG Technology & Licensing |
| Costain | Desotec |
| DNV GL | Dow Chemical Co. |
| ENGIE - CRIGEN | Equinor |
| Fives Cryo | Fjords Processing France SAS |
| Fluor Ltd. | Gassco AS |
| Grace GmbH | Huntsman Belgium BVBA |
| Johnson Matthey | Kellogg Brown & Root |
| McDermott | Pall Europe |
| Parker Hannifin - PECO | Petrofac Engineering Ltd |
| Saipem SpA | Sazeh Consultants |
| SLB | Shell Global Solutions International BV |
| SIME | Spirax Sarco |
| TechnipEnergies | Tecnimont S.p.A |
| TotalEnergies | Uniper Technologies GmbH |
| William Blythe Limited | Wintershall Dea GmbH |
| Wood Group UK Limited | Worley (Comprimo) |
| Aragon AS | Axiom Angewandte Prozesstechnik GmbH |
| BASF Catalysts Germany GmbH | Bryan Research And Engineering |
| Chart Energy and Chemicals Inc | Escher Process Modules BV |
| Hatch | Iv-Oil and Gas |
| KBC Process Technology Ltd | Kelvion Thermal Solutions |
| Liquid Gas Equipment Ltd | MySep Pte Ltd |
| Oil & Gas Systems Limited | Orbital Gas Systems Ltd |
| ORLEN SA PGNiG Branch in Odolanow | Paqell B.V. |
| PetroSkills|John M Campbell | Process Vision Ltd |
| Rotor-Tech, Inc | SBM Schiedam |
| Sulzer Chemtech Ltd | Technip Energies UK |
| Teesside Gas & Liquids | TGE Gas Engineering GmbH UK Branch |
| Tranter | UOP BVBA. |
| Vahterus Oy | VTU Engineering GmbH |
| WinSim Inc | Zeochem AG |
| Abbey Industrial Sales Co Ltd | Bohr Limited |
| FUJI FILM Manufacturing Europe | Gas Liquids Engineering Ltd |
| Gasconsult Ltd | Juran Benchmarking |
| ISG | Kirk Process Solutions |
| MPR Services | Optimized Gas Treating |
| Petrogenium | SDS Separation Technology B.V. |
| Sulphur Experts | Thermasep |
| Transform Materials LLC | Upstream Concept Engineering |
| Hydrocarbon Processing | Politecnico di Milano |
| University of Bradford | University of Surrey |