1.   ALLIED ENGINEERS & FABRICATORS. - VAPI.
2.   ANAND ENGINEERING CO. PVT. LTD. - MUMBAI.
3.   BALLAST NEDAM INTERNATIONAL. - DAHEJ
4.   BOILER BRIDGE SERVICES. - MUMBAI.
5.   CORNERSTONE MANUFACTURING SERVICES. - MUMBAI.
6.   CARLTON INDUSTRIAL ENGINEERS. - TARAPUR.
7.   DODSAL LTD. - JAMNAGAR
8.   DCMS ENGINEERING CO. - MUMBAI.
9.   G.R. ENGG. WORKS LTD. - TARAPUR.
10. GANESH BENZOPLAST LTD. - ONGC M.S.V. SAMUDRA SURAKSHA & SEVAK
11. HAL OFFSHORE LTD. - ONGC M.S.V. SAMUDRA SURAKSHA & SEVAK
12. INDIAN ALUMINIUM CO. - TALOJA.
13. INDWELL CONSTRUCTION LTD. - SURAT.
14. LAXMI BOILERS. - MUMBAI.
15. LARSEN & TOUBRO LTD. - HAZIRA SURAT.
16. LARSEN & TOUBRO ECC GROUP - JAMNAGAR & VISHAKHAPATNAM.
17. METTALLURGICAL LABORATORIES PVT. LTD. - MUMBAI.
18. NARANDAS ENGINEERING WORKS - MUMBAI
19. NEO STRUCTO CONSTRUCTION LTD. - SURAT, ALIBAUG, PANIPAT & DAHEJ
20. NDT SERVICES. - AURANGABAD.
21. PETRON ENGINEERING - MUMBAI & JAMNAGAR.
22. RELIANCE INDUSTRIES LTD. - HAZIRA, JAMNAGAR.
23. RAJENDRA MECHANICAL INDUSTRIES LTD. - TARAPUR.
24. SURINDRA ENGINEERING CO. PVT. LTD. - MUMBAI, TARAPUR
25. SUBTECH MIDDLE EAST LTD. - ONGC M.S.V. SAMUDRA SURAKSHA & SEVAK
26. UNIVERSAL ENGINEERING CORP - MUMBAI.
27. VIJAY TANKS & VESSELS PVT. LTD. - JAMNAGAR & KANDLA
28. VISHAL STEELS. - VAPI.
29. WELSPUN SYNTEX LTD. -VAPI.
30. WIKAS ENGINEERING CORP. - MUMBAI.