- Linde AG
- Tecnimont SpA
- Public Joint Stock Company Gazprom
- Siemens AG
- Schneider Electric
- Coperion GmbH
- TÜV Rheinland
- Selas Linde
- Invensis
- ThyssenKrupp AG
- BASF
- GEA
- BHDT GmbH
- Ruhrpumpen GmbH
- Metso SpA
- Samson AG
- Grande Meccanica SpA
- Samec Srl
- JSC Atomstroyexport
- Teknotes Technological Plants Inc
- MOTT MACDONALD (UK)
- KSR KUEBLER Niveau-Messtechnik AG
- P. van Leeuwen Jrs
- WIKA AG
- Foxboro Eckardt GmbH
- Gustav Klein GmbH & Co. KG
- Burckhardt Compression AG
- General Electric
- Sojitz Corporation
- WWV Wärmeverwertung GmbH & Co. KG
- Sulzer Chemtec
- AEL Apparatebau GmbH
- LEWA GmbH
- Peter the Great St. Petersburg Polytechnic University
- ST. CYRIL AND ST. METHODIUS UNIVERSITY OF VELIKO TURNOVO
- SIGMA GROUP a.s.
- VUJE a.s.
- OSKAR EL
- Kozloduy Nuclear Power Plant
- PJSC TATNEFT
- Volga Innovations
- OJSC "Tatnefteprovodstroy"
- IED Holding
- Bertrams Heatec AG
- Barlage GmbH
- UOP
- KSB AG
- Tecnimont Planung und Industrieanlagenbau GmbH
- Сentral Scientific Research Institute of Complex Automation
- Qatar Investment Fund
- Ministry of Energy of Nigeria
- Ministry of Energy of Algeria
