| WAIKA TRADE DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| WAIKA ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| HONGKONG WAIKA LIMITED | Private company limited by shares | Live |
| Waikaka Production Limited | | Live |
| WAIKATO LIMITED | Private company limited by shares | Dissolved |
| WAIKATO (H.K.) LIMITED | Private company limited by shares | Live |
| Waikato Invest Limited | Private company limited by shares | Live |
| Waikato Management Limited | Private company limited by shares | Live |
| WAIKAY COMPANY LIMITED | | Live |