1. ROYAL THAI ARMY AVIATION CENTER
2. DEFENCE TECHNOLOGY INSTITUTE ( PUBLIC ORGANISATION )
3. BMW MANUFACTURING ( THAILAND )
4. PT.TJAHJA SAKTI MOTOR ( MEMBER OF ASTRA GROUP ) / BMW INDONESIA
5. BAVARIAN AUTO MANUFACTURING CO.BAMC ( BMW EGYPT )
6. MERCEDES-BENZ MANUFACTURING ( THAILAND ) LIMITED
7. MERCEDES-BENZ INDIA PRIVATE LIMITED
8. DTS DRAEXLMAIER AUTOMOTIVE SYSTEMS ( THAILAND ) CO.,LTD.
9. DEM DRAEXLMAIER AUTOMOTIVE SYSTEMS ( M ) Sd.Bhd ( DTS MALASIA )
10. ADIENT & SUMMIT CORPORATION LTD.11. SIAMKUBOTA
11. MEAD JOHNSON NUTRITION ( THAILAND ) LTD.
12. AJINOMOTO THAILAND
13. C.P. PACKAGING INDUSTRY CO.,LTD ( CPPC )
14. OSOTSPA PUBLIC COMPANY LIMITED.
15. URC ( THAILAND ) LTD.
16. SMC ( THAILAND ) LTD.
17. SURETEX LIMITED.
18. THAI ATLAS GLOBAL FOOD CO.,LTD.
19. AUTO CS ENGINEERING CO.,
20. THAI IKEDA MFG . CO.,LTD.
21. KISTLER INSTRUMENT ( THAILAND ) CO.,LTD.
22. SAINT – GOBAIN SEKURIT ( THAILAND ) CO.,LTD.
23. SIAMKUBOTA
24. MITSUBISHI FUSO TRUCK ( THAILAND ) CO.,LTD.
25. TC MANUFACTURING AND ASSEMBLY ( THAILAND ) CO.,LTD.
26. INERGY AUTOMOTIVE SYSTEMS ( THAILAND ) LTD.
27. AIR INTERNATIONAL THERMAL SYSTEMS ( THAILAND ) LIMITED.
28. CUEL LIMITED
29. THAI KOKEN KOGYO CO.,LTD.
30. OKI DATA MANUFACTURING ( THAILAND ) CO.,LTD.
31. VCS CO.,LTD.
32. INOAC AUTOMOTIVE ( THAILAND ) CO.,LTD.
33. ATOM MANUFACTURING CO.,LTD.
34. SIAM AVIATION CO.,LTD.
35. RECKITT BENCKISER HEALTHCARE MANUFACTURING ( THAILAND ) LTD.