| Kundenname | Stadt | Land | 
|---|---|---|
| Patheon Austria GmbH & Co KG | Linz | Austria | 
| Paton Controls Ltd | Channelview | United States | 
| Paul Scherrer Institut PSI | Villingen | Switzerland | 
| Paul-Ehrlich-Schule | Frankfurt/Main | Germany | 
| PB Contrôle | Rammersmatt | France | 
| PBF Energy | Martinez | United States | 
| PBF Holding Company LLC. | Parsippany | United States | 
| PCE Realtec GmbH | Berlin | Germany | 
| PCK Raffinerie GmbH | Schwedt/Oder | Germany | 
| PCR Engineering GmbH | Wallenhorst | Germany | 
| PEAB - Process AB | Hammarö | Sweden | 
| PEB Pipeline Equipment BV | Zoetermeer | Netherlands | 
| PELZER EDV+PERIPHERIE GmbH | Mönchengladbach | Germany | 
| PENTA-ELECTRIC AG | Liestal | Switzerland | 
| Petrobras | Manaus -AM | Brazil | 
| Petrobras America Inc. | Houston | United States | 
| Petrobras Research Center | Rio de Janeiro | Brazil | 
| Petrochemical Industries | Shiraz | |
| PETROCIL Engineers and Consultants Pvt. Ltd. | Trivandrum | India | 
| Petrofac Engineering India Private Ltd. | Mumbai | India | 
| Petrofac Engineering India Private Ltd. | Gurgaon | India | 
| Petrofac Engineering Services | Chennai | India | 
| Petrofac International E&C Limited | Sharjah | United Arab Emirates | 
| Petroineos Manufacturing France SAS | Lavéra | France | 
| Petroleum Development Oman LLC | Muscat | Oman |