1. Thai Bridgestone Co., Ltd.
2. Bridgestone Tire Manufacturing (Thailand) Co.,Ltd.
3. Inoue Rubber (Thailand) Public Co., Ltd.
4. KURIYAMA - OHJI (THAILAND) LTD.
5. Bangkok roller co.,ltd.
6. International Rubber Parts Co., Ltd.
7. Vee Tyre and Rubber Co., Ltd.
8. Vee Rubber International Co.,Ltd.
9. GOODYEAR (THAILAND) PUBLIC COMPANY LIMITED
10. ND Rubber Co.,Ltd.
11. New Prosperity Belting Co., Ltd.
12. Siam Michelin Co., Ltd.
13. United Business (UBC) Co.,Ltd.
14. Suratthani Technical College.
15. P.S Union Rubber Co.,Ltd.
16. A.Yang Thai Manufacturing 1992 Co.,Ltd.
17. Prince of Songkla University.
18. Thai Rubber Sattaya (1999) Co.,Ltd.
19. Ruamchoke Rubber Co.,Ltd.
20. R.S.T Rubber Ltd.,Part.
21. YOKOHAMA TIRE MANUFACTURING (THAILAND) CO.,LTD.

22. Mikasa Industries (Thailand) Co.,Ltd.
23. MICHELIN SIAM GROUP Thailand
24. SUMITOMO RUBBER(THAILAND)CO.,LTD.
25. S.T. Rubber Factory Co.,Ltd.
26. S.R. Tire Co.,Ltd.
27. Indra Machinery Co.,Ltd.
28. Engineering & Supply Ltd.,Part.
29. Sompoon and S.P. Rubber Co., Ltd.
30. Siam Synthetic Rubber Co.,Ltd.
31. S.Sahaphan Thai Rubber Ltd.,Part.
32. V.J. Rubber Ltd.,Part.
33. Technic Industry Ltd.,Part.
34. Feihsin Enterprise Co.,Ltd.
35. Ben Trading Co.,Ltd.
36. K.C. SPORT & RUBBER INDUSTRIAL CO.,LTD.
37. Kittiwatana Hose Industry Co.,Ltd.
38. Polymer Form Co.,Ltd.
39. Suptawee Auto Co.,Ltd.
40. Namkit Rubber Part Engineering Ltd.,Part.
41. Deestone Company Limited