| Relationships | Role | Relationship Start | Relationship End |
| Dresdner Bank Aktiengesellschaft | Parent | 6/17/1994 | 6/14/1999 |
| Commerzbank Aktiengesellschaft | Parent | 6/21/1994 | 10/1/1994 |
| Mg Technologies Ag | Parent | 12/31/1992 | 12/30/1993 |
| Buderus Guss Gmbh | Subsidary | 12/31/1992 | 12/30/1993 |
| Buderus Sell Gmbh | Subsidary | 12/31/1992 | 12/30/1993 |