| Relationships | Role | Relationship Start | Relationship End |
| Wds Holdings, Inc. | Parent | 1/17/2014 | 9/25/2015 |
| Westlake Group Limited, The | Parent | 12/31/2007 | 1/16/2014 |
| Relationships | Role | Relationship Start | Relationship End |
| Wds Holdings, Inc. | Parent | 1/17/2014 | 9/25/2015 |
| Westlake Group Limited, The | Parent | 12/31/2007 | 1/16/2014 |