| Relationships | Role | Relationship Start | Relationship End |
| Treibacher Schleifmettel Spa | Parent | 7/8/1994 | 6/6/1997 |
| Treibacher Chemische Werke Ag | Parent | 9/30/1991 | 7/7/1994 |
| Treibacher Schleifmittel Corporation | Subsidary | 8/27/1993 | 6/6/1997 |
| Treibacher (Usa) Corporation | Subsidary | 12/31/1992 | 8/26/1993 |
| General Abrasive Treibacher Inc. | Subsidary | 9/30/1991 | 8/26/1993 |