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List of PTIT Membership (As of August 30, 2010)
  FULL MEMBERS Member Since
1. Bangkok Synthetics Co., Ltd. 2005
2. Bayer Thai Co., Ltd. 1998
3. BG Asia Pacific Pte Limited. 1991
4. BP-Castrol (Thailand) Limited 1988
5. Chevron (Thailand) Limited 1987
6. Chevron Thailand Exploration and Production Ltd.
+ Chevron Offshore (Thailand) Limited

1987
7. Electricity Generating Authority of Thailand 1987
8. Esso (Thailand) Public Co., Ltd.
+ ExxonMobil Exploration and Production Khorat, Inc.
1987
9. Glow Co., Ltd. 2004
10. Hess (Thailand) Limited 1998
11. IRPC Public Co., Ltd. 2001
12. Mitsui Oil Exploration Co., Ltd. (MOECO) 1987
13. NuCoastal (Thailand) Limitted 2008
14. Pan Orient Energy (Thailand) Limited 2006
15. Pearl Oil (Thailand) Limited 1999
16. PTT Aromatics and Refining Public Co., Ltd. 1994
17. PTT Chemical Public Co., Ltd.
+ TOC Glycol Co., Ltd.
+ Thai Oleochemicals Co., Ltd.
+ Thai Ethanolamines Co., Ltd.
+ PTT Chemical International (Asia Pacific ROH) Ltd.
1987
18. PTT Exploration and Production Public Co., Ltd.
+ PTT Siam Co., Ltd
.
1989
19. PTT Public Co., Ltd. 1987
20. Rayong Olefins Co., Ltd. 2001
21. Rayong Purifier Public Co., Ltd. 1998
22. SCC-Dow Group
+ Siam Polystyrene Co., Ltd.
+ Siam Styrene Monomer Co., Ltd.
+ Siam Synthetic Latex Co., Ltd.
+ Siam Polyethylene Co., Ltd.
+ SD Group Service Co., Ltd.
1988
23. Schlumberger Overseas S.A. 1988
24. Siam Mitsui PTA Co., Ltd. 2003
25. Star Petroleum Refining Co., Ltd. 1993
26. Thai MMA Co., Ltd. 2003
27. Thai Oil Public Co., Ltd. 1987
28. Thai Plastic and Chemicals Plc.
+ TPC Paste Resin Co., Ltd
.
1989
29. Thai Polyethylene Co., Ltd.
+ Thai Polypropylene Co., Ltd.
1989
30. Thai-MC Co., Ltd. 1988
31. The Bangchak Petroleum Public Co., Ltd. 1988
32. The Industrial Estate Authority of Thailand 2003
33. The Shell Company of Thailand Limited 1987
34. Total E&P Thailand 1990
35. Vinythai Public Co., Ltd.  1989
ORDINARY MEMBERS
 
1. ABB Limited 1999
2. AECOM (Thailand) Ltd. 2009
3. Air Total (Thailand) Limited 1994
4. Apico LLC 2008
5. Apollo (Thailand) Co., Ltd. 2004
6. ARV Offshore Co., Ltd. 2007
7. Asia Pacific Petrochemical Co., Ltd. 2007
8. Bangkok Bank Public Co., Ltd. 1988
9. Bank of Thailand  1989
10. Bechtel International, Inc. 1993
11. Bureau Veritas (Thailand) Limited 2003
12. C.K. Electech Co., Ltd. 2003
13. Carigali Hess Operating Company Sdn. Bhd. 2001
14. Carnarvon Petroleum Limited 2009
15. Chandler & Thong-Ek Law Offices Limited  1988
16. Chuchawal - Royal Haskoning Ltd. 2009
17. Clough (Thailand) Co., Ltd. 2004
18. Continental Petrochemicals (Thailand) Co., Ltd. 2003
19. CTCI (Thailand) Co., Ltd.  1991
20. CUEL Limited 2001
21. Dialog System (Thailand) Limited 2004
22. Electricity Generating Public Co., Ltd. 1995
23. ERM-Siam Co., Ltd. 1998
24. Foster Wheeler International Corporation  1992
25. HMC Polymers Co., Ltd.  1989
26. Indorama Petrochem Limited 2010
27. Intertek Testing Services (Thailand) Limited  2001
28. Invensys Process Systems (Thailand) Co., Ltd. 2009
29. Itochu (Thailand) Limited 2004
30. Kasikorn Bank Public Co., Ltd. 2004
31. Marubeni Thailand Co., Ltd. 1989
32. Moody International (Thailand) Limited  1998
33. Orange Energy Limited  2002
34. P3 Global Energy Co., Ltd. 2009
35. Paktai Chueplerng Public Co., Ltd. 1994
36. Palang Sophon Limited  2005
37. Petronas Retail (Thailand) Limited 2005
38. Prompt Technical Services Limited 2010
39. PTT Phenol Co., Ltd. 2008
40. PTT Utility Co., Ltd. 2010
41. Salamander Energy (E&P) Limited 2009
42. SVT Engineering Consultants 2010
43. Technip Engineering (Thailand) Limited  2008
44. Thai Nippon Steel Engineering & Construction Corporation Limited 1992
45. Thai Petroleum Pipeline Co., Ltd. 1996
46. Thai Polycarbonate Co., Ltd. 2000
47. Thai Tank Terminal Limited 1993
48. TPT Petrochemicals Public Co., Ltd. 2000
49. Trafigura Pte Ltd 2000
50. UBE Chemicals (Asia) Public Co., Ltd. 2008
51. Uhde Shedden (Thailand) Limited 2008
52. Waste Management Siam Limited 2010

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