| WATERLINK LIMITED | Private company limited by shares | Live |
| HONG KONG WATERLINK TRADING CO., LIMITED | Private company limited by shares | Live |
| WATERLINK ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| WATERLINK (H.K.) LIMITED | Private company limited by shares | Dissolved |
| WATERLINK INDUSTRIAL LIMITED | Private company limited by shares | Live |
| WATERLINK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WATERLINK INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| WATERLINK PACIFIC LIMITED | Private company limited by shares | Dissolved |
| WATERLINK REGIONAL LIMITED | Private company limited by shares | Dissolved |
| WATERLINK TRADING LIMITED | Private company limited by shares | Dissolved |