| Kundenname | Stadt | Land |
|---|---|---|
| Proval Inc. | Siheung-Si, Gyeonggi-Do | Republic of Korea |
| Providence Doytch Limited | Baku | |
| Prozessleittechnik Seffer | Hannover | Germany |
| PSC S.p.A. Engineering & Contracting | Seregno (MB) | Italy |
| PSG Fertigungs und Prozeßautomations GmbH | Burghausen | Germany |
| PTT Global Chemical Public Company Limited | Bangkok | Thailand |
| PUMA Energy International B.V. | Geneva | Switzerland |
| Puma Energy Services (Latam) LLC | Guaynabo | Puerto Rico |
| PYROCONTROLE | Meyzieu | France |
| Pyro°Control AS | Solbergelva | Norway |
| Pyrum Innovations AG | Dillingen/Saar | Germany |
| QATAR FERTILISER COMPANY (SAQ) | Mesaieed | Qatar |
| Qatar Fuel Additives Company Limited (QFAC) | Doha | Qatar |
| Qatar Modern Instruments & Controls Co. | Doha | Qatar |
| Qatar Vinyl Company Ltd. Q.S.C. | Doha | Qatar |
| Qatargas Operating Company Limited | Doha | Qatar |
| QPS Groep | Dordrecht | Netherlands |
| QUAM s.r.l. | Fiorenzuola d'Arda (PC) | 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 |
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