| Relationships | Role | Relationship Start | Relationship End |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 10/1/1992 | 5/30/1993 |
| Relationships | Role | Relationship Start | Relationship End |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 10/1/1992 | 5/30/1993 |