| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| PTT Public Co Ltd | Public | Parent | Thailand | 30,772 | 90,467 | |
| PTT Global Chemical Public Co Ltd | Public | Parent | Thailand | 7,425 | 17,884 | |
| PTT Exploration and Production Public Co Ltd | Public | Subsidiary (of PTT Public Co Ltd) | Thailand | 5,363 | 8,651 | |
| PTT Synergy Group Bhd | Public | Parent | Malaysia | XYZ | XYZ | |
| GC Maintenance & Engineering Co Ltd | Private | Subsidiary (of PTT Global Chemical Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Digital Solutions Co Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| Wuxi Putian Iron Core Co Ltd | Private | Independent | China | XYZ | XYZ | |
| PTTRNS B.V. | Private | Independent | Netherlands | XYZ | XYZ | |
| PPD Development S Pte Ltd | Private | Subsidiary (of Pharmaceutical Product Development LLC ) | Singapore | XYZ | XYZ | |
| PTTEP Sarawak Oil Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Malaysia | XYZ | XYZ | |
| PTT Oil and Retail Business Plc | Public | Subsidiary (of PTT Global Chemical Public Co Ltd ) | Thailand | XYZ | XYZ | |
| Mitsui Oil Exploration Co Ltd | Private | Subsidiary (of Mitsui & Co Ltd) | Japan | 106 | 174 | |
| Petroleum Development Oman LLC | Private | Joint Venture | Oman | 8,900 | XYZ | |
| PTT AS | Private | Independent | Turkey | XYZ | XYZ | |
| PTT Philippines Corp | Private | Subsidiary (of PTT Public Co Ltd ) | Philippines | XYZ | XYZ | |
| PTT Phenol Co Ltd | Private | Subsidiary (of PTT Global Chemical Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Philippines Trading Corporation | Private | Subsidiary (of PTT Public Co Ltd ) | Philippines | XYZ | XYZ | |
| PTT＆TGES Optec Company Limited | Private | Independent | Thailand | XYZ | XYZ | |
| PTT Energy Solutions Co Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Energy Resources Co., Ltd. | Private | Subsidiary (of PTT Global Chemical Public Co Ltd ) | Thailand | XYZ | XYZ | |
| Ptt Digital Solutions Co., Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Retail Business Co Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Retail Management Co Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Asahi Chemical Co Ltd | Private | Joint Venture | Thailand | XYZ | XYZ | |
| PTT Polymer Marketing Co Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Energy Resource Co Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTT Oil and Retail Business Public Company Limited | Private | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| ptTheragnostic BV | Private | Subsidiary (of DNAmito Inc ) | Netherlands | XYZ | XYZ | |
| PTTGC America Corp | Private | Subsidiary (of PTT Global Chemical Public Co Ltd ) | United States of America | XYZ | XYZ | |
| PTTEP International Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTTEP Mena Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTTEP Group Holding BV | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Netherlands | XYZ | XYZ | |
| PTTEP Australasia Pty Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Australia | XYZ | XYZ | |
| PTTEP Siam Company Ltd | Private | Subsidiary (of PTTEP Offshore Investment Co Ltd ) | Thailand | XYZ | XYZ | |
| PTTEP Canada International Finance Limited | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Canada | XYZ | XYZ | |
| PTTEP HK Offshore Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Malaysia | XYZ | XYZ | |
| PTTOR International Holdings (Singapore) Pte Ltd | Private | Subsidiary (of PTT Public Co Ltd ) | Singapore | XYZ | XYZ | |
| PTTEP Offshore Investment Co Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | United Kingdom | XYZ | XYZ | |
| PTTEP Treasury Center Co Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Thailand | XYZ | XYZ | |
| PTTEP Australia Perth Pty Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Australia | XYZ | XYZ | |
| PTTEP Australasia Ashmore Cartier Pty Ltd | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Australia | XYZ | XYZ | |
| PTTEP Mexico E&P Ltd S De RL De CV | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Mexico | XYZ | XYZ | |
| PTTEP Brazil Investments in Oil and Gas Exploration and Production Ltda | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Brazil | XYZ | XYZ | |
| Cove Energy Plc | Private | Subsidiary (of PTTEP Africa Investment Ltd ) | United Kingdom | XYZ | XYZ | |
| Neutral Tandem, Inc. | Private | Independent | United States of America | XYZ | XYZ | |
| Global Power Synergy Public Co Ltd | Public | Subsidiary (of PTT Public Co Ltd ) | Thailand | XYZ | XYZ | |
| GC Styrenics Co Ltd | Private | Subsidiary (of PTT Global Chemical Public Co Ltd ) | Thailand | XYZ | XYZ | |
| Thai Fatty Alcohols Company Ltd | Private | Subsidiary (of PTT Global Chemical Public Co Ltd ) | Thailand | XYZ | XYZ | |
| High 5 Games | Private | Independent | United States of America | XYZ | XYZ | |
| Mandacaru Energia Ltda | Private | Subsidiary (of PTT Exploration and Production Public Co Ltd ) | Brazil | XYZ | XYZ |
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