| Kundenname | Stadt | Land |
|---|---|---|
| Ortner Ges.m.b.H. | Innsbruck | Austria |
| OSCHATZ GmbH | Essen | Germany |
| Österreichisches Forschungs- und Prüfzentrum | Wien | Austria |
| OT Industries Asset Utilization LLC. | Budapest | Hungary |
| OT Industries Eszközhasznosító Kft. | Budapest | Hungary |
| Otto-von-Guericke-Universität Magdeburg | Magdeburg | Germany |
| Outotec GmbH & Co KG | Oberursel | Germany |
| Oveducon | Naaldwijk | Netherlands |
| Oxxynova GmbH | Steyerberg | Germany |
| OY Säätö Ab | Vantaa | Finland |
| P & M Industrie-Anlagenplanung GmbH | Frechen | Germany |
| P.A. Consultancies - KURZ Instruments Europe | Biddinghuizen | Netherlands |
| PANTOCHIM | Feluy | Belgium |
| Par Pacific Holdings, Inc. | Houston, TX | United States |
| PARLYM Engineering | Marseille | France |
| 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 |
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