| WELL SOUND TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND YIELD TRADING LIMITED | Private company limited by shares | Dissolved |
| SOUND WAVE TRANSPORTATION LIMITED | Private company limited by shares | Live |
| SOUND TREASURE LIMITED | Private company limited by shares | Live |
| TRUE SOUND COMPANY LIMITED | Private company limited by shares | Live |
| TRUMP SOUND LIMITED | Private company limited by shares | Live |
| TULIP SOUND LIMITED | Private company limited by shares | Live |
| TURBO SOUND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND UNION LIMITED | Private company limited by shares | Dissolved |
| SOUND UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND UNIT LIMITED | Private company limited by shares | Dissolved |
| UNITED SOUND LIMITED | Private company limited by shares | Dissolved |
| UNITED SOUND (PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| VANITY SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| VAST SOUND LIMITED | Private company limited by shares | Live |
| AMERICAN VELOCITY OF SOUND ENERGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| VICTOR SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| VICTORY SOUND LIMITED | Private company limited by shares | Live |
| SOUND VICTORY LIMITED | Private company limited by shares | Dissolved |
| VICTORY SOUND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| VICTORY SOUND SYSTEM CO. LIMITED | Private company limited by shares | Live |
| SOUND VILLAGE LIMITED | Private company limited by shares | Dissolved |
| VIRGIN SOUND INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| TT Sound & Vision Company Limited | Private company limited by shares | Dissolved |
| ChatHay Sound And Vision Company Limited | Private company limited by shares | Dissolved |
| SOUND & VISION ENTERTAINMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND VISTA ALLIANCE LIMITED | Private company limited by shares | Dissolved |
| VISUAL SOUND HK LIMITED | Private company limited by shares | Live |
| BEST SOUND AUDIO VISUAL COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| MUSIC SOUND & VISUAL LIMITED | Private company limited by shares | Live |
| Fly Sound and Visual Production Limited | Private company limited by shares | Live |
| WATA SOUND LIMITED | Private company limited by shares | Live |
| SOUND WATCHERS LIMITED | Private company limited by shares | Dissolved |
| SOUND WATER (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SOUND WAVE LIMITED | Private company limited by shares | Dissolved |
| WEAL SOUND LIMITED | Private company limited by shares | Dissolved |
| WEALTH SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND WEALTH LIMITED | Private company limited by shares | Live |
| WEALTH SOUND LIMITED | Private company limited by shares | Dissolved |
| WEALTH SOUND LIMITED | Private company limited by shares | Live |
| WEALTH SOUND ENTERPRISES LIMITED | Private company limited by shares | Live |
| WEALTH SOUND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND WEALTH INVESTMENT LIMITED | Private company limited by shares | Live |
| WEALTHY SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| WEALTHY SOUND LIMITED | Private company limited by shares | Live |
| WELL SOUND LIMITED | Private company limited by shares | Dissolved |
| WELL SOUND LIMITED | Private company limited by shares | Live |
| WELL SOUND ASIA LIMITED | Private company limited by shares | Dissolved |
| WELL SOUND ENTERPRISE LIMITED | Private company limited by shares | Live |
| WELL SOUND INVESTMENT LIMITED | Private company limited by shares | Live |
| WHOLE SOUND LIMITED | Private company limited by shares | Dissolved |
| WIDE SOUND LIMITED | Private company limited by shares | Dissolved |
| WIDE SOUND LIMITED | Private company limited by shares | Dissolved |
| WIDE SOUND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| WIDE SOUND ELECTRONICS (HK) LIMITED | Private company limited by shares | Live |
| Wide Sound International Limited | Private company limited by shares | Dissolved |
| SOUND WILL FUNDAMENTAL INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SOUND OF WILLIAM LIMITED -THE- | Private company limited by shares | Live |
| WINNER SOUND LIMITED | Private company limited by shares | Dissolved |
| WINNING SOUND LIMITED | Private company limited by shares | Dissolved |
| WINNING SOUND LIMITED | | Live |
| WINNING SOUND F & B LIMITED | | Live |
| WISDOM SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| WISE SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| WISE SOUND LIMITED | Private company limited by shares | Live |
| WISE SOUND ASIA LIMITED | Private company limited by shares | Dissolved |
| Wise Sound Expert (HongKong) Technology Co., Limited | Private company limited by shares | Live |
| WONDER SOUND LIMITED | Private company limited by shares | Live |
| SOUND WONDERLAND LIMITED | Private company limited by shares | Dissolved |
| SOUND WORK TRADING LIMITED | Private company limited by shares | Dissolved |
| YS Sound Balancing Workshop Limited | Private company limited by shares | Live |
| SOUND & VISION WORKSHOP LIMITED | Private company limited by shares | Live |
| WORLD SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND WORLD LIMITED | Private company limited by shares | Dissolved |
| SOUND WORLD LIMITED | Private company limited by shares | Live |
| WORLD SOUND LIMITED | Private company limited by shares | Live |
| WORLD SOUND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| WORLD SOUND ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| WORLD SOUND (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SOUND WORLD INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| WORLD SOUND INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| WORLD CHINESE SOUND ART INSTITUTE LIMITED | Private company limited by shares | Live |
| WORLD SOUND INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOUND WORTH INVESTMENT LIMITED | Private company limited by shares | Live |
| Xanadu Aroma Sound Therapy Company Limited | | Live |
| Yeah Sound Limited | | Live |
| SOUND YEAR LIMITED | Private company limited by shares | Dissolved |
| SOUND YIELD LIMITED | Private company limited by shares | Dissolved |
| HK YINGFENG LIGHT SOUND LIMITED | Private company limited by shares | Dissolved |
| Ajna Sound Therapy & Yoga Limited | Private company limited by shares | Live |
| Ajna Sound Therapy & Yoga Limited | Private company limited by shares | Live |
| YUKINGS SOUND BARRIERS (HONGKONG) LIMITED | Private company limited by shares | Live |
| HK ZETTA SOUND TRADE LIMITED | Private company limited by shares | Live |
| Zonic Sound Asia Limited | | Live |
| LA SOUNDA COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUNDA LIMITED | Private company limited by shares | Dissolved |
| SoundAI Limited | | Live |
| SoundAI Microchips Limited | Private company limited by shares | Live |
| SOUNDART INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| C. & C. SOUNDAS COMPANY LIMITED | Private company limited by shares | Dissolved |