| PROMAS LIMITED | Private company limited by shares | Live |
| PROMASIAN LIMITED | Private company limited by shares | Dissolved |
| PROMASOFT LIMITED | Private company limited by shares | Dissolved |
| PROMASS LIMITED | Private company limited by shares | Dissolved |
| PROMASSIVE LIMITED | Private company limited by shares | Dissolved |
| PROMASTER COMPANY LIMITED | Private company limited by shares | Dissolved |
| PROMASTER LIMITED | Private company limited by shares | Live |
| PROMASTER INC LIMITED | Private company limited by shares | Live |
| PROMASTER ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| PROMASTER INDUSTRIAL GROUP LIMITED | Private company limited by shares | Dissolved |
| PROMASTER TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |