| Name | Type | Sector | Country | Joined On |
|---|---|---|---|---|
| Sampol Ingenieria y Obras, S.A. | Company | Industrial Engineering | Spain | 11-Apr-2011 |
| Grupo GD Energy Services (GDES) | Company | Industrial Engineering | Spain | 25-Oct-2010 |
| Eiffage Energia, S.L.U. | Company | Industrial Engineering | Spain | 05-Mar-2010 |
| Electricidad Llames | Small or Medium-sized Enterprise | Industrial Engineering | Spain | 30-Aug-2008 |
| Ingenieria y Economia del Transporte SME MP S.A. (INECO) | Company | Industrial Engineering | Spain | 30-Aug-2008 |