| Relationships | Role | Relationship Start | Relationship End |
| Thai Investment & Securities Public Company Limited | Parent | 6/1/1990 | 12/30/1995 |
| Thai Investment & Securities Public Company Limited | Parent | 9/30/1983 | 2/28/1990 |
| Relationships | Role | Relationship Start | Relationship End |
| Thai Investment & Securities Public Company Limited | Parent | 6/1/1990 | 12/30/1995 |
| Thai Investment & Securities Public Company Limited | Parent | 9/30/1983 | 2/28/1990 |