| Relationships | Role | Relationship Start | Relationship End |
| Blackrock International Holdings, Inc | Parent | 10/13/2009 | |
| Br Acquisition Mexico S.A.De C.V. | Subsidary | 11/23/2009 | |
| Impulsora Y Promotora Blackrock Mexico, S.A. De C.V. | Subsidary | 12/1/2009 | |
| Prestadora De Servicios Integrales Blackrock Mexico, S.A. De C.V. | Subsidary | 12/1/2009 |