| Relationships | Role | Relationship Start | Relationship End |
| Mg Technologies Ag | Parent | 12/31/1991 | 12/30/1993 |
| Mg Technologies Ag | Parent | 12/31/1989 | 12/30/1991 |
| Mg Technologies Ag | Parent | 3/1/1984 | 12/30/1989 |
| Lurgi Corp. | Subsidary | 12/31/1991 | 12/30/1993 |
| Weidleplan Consulting Gmbh | Subsidary | 12/31/1991 | 12/30/1993 |
| Lurgi Corp. | Subsidary | 12/31/1989 | 12/30/1991 |
| Lurgi Corp. | Subsidary | 3/1/1984 | 12/30/1989 |