- Mitsubishi Heavy Industries Ltd. MHI (Japan).

- N.V. De Smet S.A. Engineers and Contractors DSEC (Belgium).

- Bentini Costruzioni S.p.a. (Italy).

- TECHNOEXPORT Czech Republic.

- HYUNDAI Heavy Industry Ltd. HHI (Korea).

- HYUNDAI Engineering and Construction Ltd. HDEC (Korea).

- Forney (USA).

- SIEMENS (Germany).

- GBG, Gleitbau Salzburg GesmbH (Austria).

- Abrigada Companhia Nacional De Refractarios, SA (Portugal).
- Ericsson ( Sweden ).
- AREVA T&D ( France ).
- Koch / Siemens Consortium