| 1. Petronas Carigali Sdn Bhd |
| 2. PC Overseas Sdn Bhd, Ethiopia |
| 3. PC Vietnam Ltd |
| 4. PC Myanmar (Hong Kong) Ltd |
| 5. Petronas Carigali (Turkmenistan) Sdn Bhd |
| 6. Petronas Dagangan Berhad |
| 7. Petronas Methanol (Labuan) Sdn Bhd |
| 8. PCPP Operating Company Sdn Bhd |
| 9. Carigali Hess Operating Company Sdn Bhd |
| 10. Carigali-PTTEPI Operating Company Sdn Bhd |
| 11. Carigali-Triton Operating Company Sdn Bhd |
| 12. Sarawak Shell Berhad |
| 13. Sabah Shell Berhad |
| 14. Exxon Mobil Exploration and Production Inc Malaysia |
| 15. Murphy Oil Ltd |
| 16. Talisman Energy Inc |
| 17. White Nile Petroleum Operating Company |
| 18. CS Mutiara Petroleum Sdn Bhd |
| 19. Korea National Oil Corporation |
| 20. Newfield Sarawak Malaysia Inc. |
| 21 Newfield Peninsula Malaysia Inc |
| 22 Nippon Oil Exploration (Malaysia) Ltd.. |
| 23. Petrofac (Malaysia-PM304) Limited |
| 24. Malaysian International Trading Corpn. (Japan) Sdn Bhd |
| 25. PTT Exploration and Production Public Company Ltd. |
| 26. Clough Uni Thai Engineering Ltd. |
| 27. Thai Nippon Steel Co. Ltd. |
| 28. Pan Orient Company Ltd. |
| 29. Pearl Oil Company Ltd |
| 30. SHEDDENUHDE Co. Ltd. |
| 31. CTCI Co. Ltd. |
| 32. Nucoastal Thailand Co. Ltd. |
| 33. Pear Oil (Sebuku) Ltd. |
| 34. Pearl Oil (Tungkal) Ltd. |
| 35. Pearl Oil (Salawati) Ltd. |
| 36. PT. Pertalahan Arnebatara Natuna |
| 37. MODEC Management Service Pte, Ltd |
| 38. GLOW SSP Public Company Limited |
| 39. TECHNIP |
| 40. HYUNDAI Heavy Industries Co, Ltd |
| 41. CUEL |
| 42. CNPCHK (Thailand ) Limited |
| 43. TOYO-THAI Corporation Ltd. |
| 44. CHEVRON |
| 45. DEMCO Public Company Limited |
| 46. DENSO (Thailand ) Co., Ltd |
| 47. FOSTER Wheeler |
