| Client name | City | Country |
|---|---|---|
| Qatar Modern Instruments & Controls Co. | Doha | Qatar |
| Qatar Vinyl Company Ltd. Q.S.C. | Doha | Qatar |
| QatarEnergy LNG | Doha | Qatar |
| QPS Groep | Dordrecht | Netherlands |
| QUAM s.r.l. | Fiorenzuola d'Arda | Italy |
| R.C.F. Ltd. | Mumbai | India |
| R.J.C. Associates Company Limited | Bangkok | Thailand |
| R.P. Sarda S.r.l. | Sarroch | Italy |
| Rabigh Refining & Petrochemical Co. | Rabigh | Saudi Arabia |
| Radici Chimica Deutschland GmbH | Tröglitz | Germany |
| Raffinerie Heide GmbH | Hemmingstedt | Germany |
| Rain Carbon Germany GmbH | Castrop-Rauxel | Germany |
| RAM E&I Systems Pvt. Ltd. | Chennai, Tamil Nadu | India |
| RAM Engineering und Anlagenbau GmbH | Gelsenkirchen Buer | Germany |
| Ramén Valves AB | Bromma | Sweden |
| RAMSYS GmbH | Dorsten | Germany |
| Ramsys GmbH | Saarbrücken | Germany |
| RasGas Company Limited | Doha | Qatar |
| Rayong Engineering & Plant Service Co., Ltd. | Bangkok | Thailand |
| ReCon Management Services, Inc. | Sulphur | United States |
| Regelmatic GmbH | Rödermark | Germany |
| Regelmatic GmbH | Gelsenkirchen | Germany |
| Regelmatic GmbH | Brunsbüttel | Germany |
| Regeltechnik Kornwestheim GmbH | Kornwestheim | Germany |
| REGLER + ARMATUREN Terschüren GmbH | Duisburg | Germany |
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