| Relationships | Role | Relationship Start | Relationship End |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 12/1/1990 | 9/29/1993 |
| Relationships | Role | Relationship Start | Relationship End |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 12/1/1990 | 9/29/1993 |