| Relationships | Role | Relationship Start | Relationship End |
| North Haven Private Equity Asia Gas Holdings Limited | Parent | 12/3/2013 | 11/26/2014 |
| Prosperity Gas Holdings Limited | Subsidary | 12/3/2013 | 11/26/2014 |
| Prosperity Gas 2 Company Limited | Subsidary | 10/16/2014 | 11/26/2014 |