| PRECO LIMITED | Private company limited by shares | Dissolved |
| PRECO INVESTMENTS LIMITED | Private company limited by shares | Live |
| China Precoco Technology Limited | Private company limited by shares | Live |
| Precofiber Limited | Private company limited by shares | Live |
| PRECOG LIMITED | Private company limited by shares | Live |
| PRECOM HK LIMITED | Private company limited by shares | Live |
| PRECON ASIA LIMITED | Private company limited by shares | Dissolved |
| Innovative Precon Design Limited | Private company limited by shares | Live |
| PRECON PILING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Precoptech Limited | | Live |