Corporate Members
| Air Liquide Global E&C Solutions Germany GmbH | Amines & Plasticizers Ltd |
| ANDRITZ AG | Arkema France |
| Atlas Copco Energas GmbH | Axens |
| Baker Hughes | BASF SE |
| Bechtel Ltd. | BP Exploration Operating Co. Ltd. |
| ConocoPhillips LNG Technology & Licensing | Costain |
| DNV Services UK Limited | Dow Chemical Co. |
| ENGIE - CRIGEN | ENI Spa |
| Equinor | Fives Cryo |
| Fjords Processing France SAS | Fluor Ltd. |
| Gassco AS | Huntsman Belgium BVBA |
| Johnson Matthey | Kellogg Brown & Root |
| Linde AG | Noritt |
| McDermott | Pall Europe |
| Parker Hannifin Manufacturing Limited | Petrofac Facilities Management Ltd |
| Saipem SpA | Saudi Aramco |
| Sazeh Consultants | SLB |
| Shell Global Solutions International BV | TechnipEnergies |
| Tecnimont S.p.A | TotalEnergies One Tech SAS |
| Uniper Technologies GmbH | William Blythe Limited |
| 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 | Hatch |
| Heatric | Iv-Oil and Gas |
| KBC Process Technology Ltd | Kelvion Ltd. |
| Kent Energies UK Ltd | Liquid Gas Equipment Ltd |
| MySep Pte Ltd | Oil & Gas Systems Limited |
| Orbital Gas Systems Ltd | Paqell B.V. |
| PetroSkills|John M Campbell | PGNiG SA Oddzial w Odolanowie |
| Process Vision Ltd | SBM Schiedam |
| Siemens | Sulzer Chemtech Ltd |
| Syzygy Plasmonics | 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 |
| Bring Solutions BV | Chem Group MPR Services LLC |
| Gasconsult Ltd | ISG |
| Kirk Process Solutions | Optimized Gas Treating |
| Phillip Townsend Associates Ltd | SDS Separation Technology B.V. |
| Sulphur Experts | Thermasep |
| University of Bradford | Hydrocarbon Processing |