| ACOS (ASIA) LIMITED | Private company limited by shares | Live |
| ACOS (CHINA) LIMITED | Private company limited by shares | Live |
| ACOS METAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Acosec Services Limited | Private company limited by shares | Live |
| ACOSKA LIMITED | Private company limited by shares | Live |
| Acoss Limited | Private company limited by shares | Live |
| ACOSTA. LIMITED | Private company limited by shares | Live |
| ACOSTA PACIFIC LIMITED | Private company limited by shares | Live |
| ACOSTAR LIMITED | Private company limited by shares | Dissolved |
| ACOSYS LIMITED | Private company limited by shares | Live |