| Relationships | Role | Relationship Start | Relationship End |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 5/1/1993 | 9/29/1993 |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 1/1/1991 | 2/27/1993 |
| Relationships | Role | Relationship Start | Relationship End |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 5/1/1993 | 9/29/1993 |
| Norchem S.A. Sociedade De Investimento - Capital Estrangeiro | Parent | 1/1/1991 | 2/27/1993 |