| OPUS ONE MUSIC ACADEMY LIMITED | Private company limited by shares | Dissolved |
| OPUS 1 MUSIC FOUNDATION LIMITED | | Live |
| OPUS (PACIFIC) COMPANY LIMITED | Private company limited by shares | Live |
| Opus One Parking Limited | Private company limited by shares | Live |
| OPUS PLANNING COMPANY LIMITED | Private company limited by shares | Live |
| OPUS ENTERTAINMENT PRODUCTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| OPUS MEDIA PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| OPUS RESOURCES LIMITED | Private company limited by shares | Dissolved |
| OPUS International School Management Limited | Private company limited by shares | Live |
| SILENT OPUS LIMITED | Private company limited by shares | Live |
| OPUS STUDIO COMPANY LIMITED | Private company limited by shares | Live |
| OPUS CRYSTAL STUDIO LIMITED | Private company limited by shares | Live |
| OPUS CRYSTAL STUDIO (SZ) LIMITED | Private company limited by shares | Live |
| OPUS TECH LIMITED | Private company limited by shares | Dissolved |
| OPUS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| OPUS ONE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Opus Technology Co. , LIMITED | | Live |
| Opus Media Technology Limited | Private company limited by shares | Live |
| OPUS THREE LIMITED | Private company limited by shares | Live |
| OPUS INTERNATIONAL TRADE LIMITED | Private company limited by shares | Live |
| Opus Trading Limited | Private company limited by shares | Dissolved |
| OPUS TRADING CO., LIMITED | Private company limited by shares | Live |
| OPUS GENERAL TRADING LIMITED | | Live |
| OPUS TRADING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| OPUS INTERNATIONAL TRADING COMPANY LIMITED | Private company limited by shares | Live |
| OPUS TRAVEL COMPANY LIMITED | Private company limited by shares | Live |
| OpuSafe Limited | Private company limited by shares | Live |
| OPUSAN ENTERPRISE CO., LIMITED | Private company limited by shares | Dissolved |
| OPUSC TRADING COMPANY LIMITED | Private company limited by shares | Live |
| OpusChin Limited | Private company limited by shares | Dissolved |
| OPUSCHINA GROUP LIMITED | | Live |
| OPUSMAGNUM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OPUSONE TECHNOLOGIES (ASIA) LIMITED | Private company limited by shares | Dissolved |
| OPUSSOME TRADING CO., LIMITED | Private company limited by shares | Live |
| OPUTECH LIMITED | Private company limited by shares | Live |
| SEIWA OPUTO (H.K.) CO., LIMITED | Private company limited by shares | Live |
| Opuz Enterprise Limited | Private company limited by shares | Live |