| LEE'S SOUND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| MASTER SOUND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ROUGE SOUND ENGINEERING COMPANY LIMITED -THE- | Private company limited by shares | Live |
| STABLE SOUND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SOUND WELL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| WINKY SOUND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Sound Waves English Education Limited | Private company limited by shares | Live |
| SOUND BELL ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| DRAGON SOUND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| LOGIC AND SOUND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| TRADE SOUND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SOUND WIN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SOUND ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SKY SOUND ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GRAND SOUND ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SOUND JOYCE ENTERPRISES LIMITED | Private company limited by shares | Live |
| OCEAN SOUND ENTERPRISES LIMITED | Private company limited by shares | Live |
| SOUND VIEW ENTERPRISES LIMITED | Private company limited by shares | Live |
| SOUND YEAR ENTERPRISES LIMITED | Private company limited by shares | Live |
| ENTERTAINMENT SOUND LIMITED | Private company limited by shares | Live |
| NEW SOUND ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| PCC Sound & Entertainment Company Limited | Private company limited by shares | Live |
| SOUND ENVIRONMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| BO SHI (H. K.) SOUND EQUIPMENT CO. LIMITED | Private company limited by shares | Dissolved |
| ALL WIN SOUND EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| AMERICAN JINSHENG SOUND EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| SOUND POWER AUDIO EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| SPECIAL SOUND AUDIO EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| HEROES SOUND EQUIPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| AIE (SOUND EQUIPMENT & INSTRUMENTS) LIMITED | Private company limited by shares | Dissolved |
| LOCATION SOUND EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| MASTER SOUND EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| Hong Kong EVE Sound Equipments Co., Limited | Private company limited by shares | Live |
| UK SHININGDAY SOUND EQUPMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| ETERNAL SOUND LIMITED | Private company limited by shares | Live |
| T SOUND EVENT SOLUTION LIMITED | Private company limited by shares | Live |
| SOUND VISION EVENTS LIMITED | | Live |
| EVER SOUND MACHINERY LIMITED | Private company limited by shares | Dissolved |
| Sound Evolution Workshop Limited | Private company limited by shares | Live |
| EVOS SOUND LIMITED | Private company limited by shares | Live |
| EXCEL SOUND LIMITED | Private company limited by shares | Dissolved |
| EXCEL SOUND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND EXPRESS LIMITED | Private company limited by shares | Live |
| SOUND EXPRESS PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| SOUND FACTOR LIMITED | Private company limited by shares | Live |
| SOUND FACTORY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND INVESTMENT PLASTIC FACTORY LIMITED -THE- | Private company limited by shares | Dissolved |
| SOUND OF FAERIES LIMITED | Private company limited by shares | Live |
| FAIR SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND FAIR LIMITED | Private company limited by shares | Dissolved |
| FAIR SOUND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SOUND FAITH INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND FAITH INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SOUND FAITH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND FAITH INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| FAITHFUL SOUND LIMITED | Private company limited by shares | Dissolved |
| FALCON SOUND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| FAME SOUND LIMITED | Private company limited by shares | Live |
| FAMOUS SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| FAMOUS SOUND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| FAMOUS SOUND DEVELOPMENT LIMITED | Private company limited by shares | Live |
| FANTASY SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND ENGINEERING (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| Fashion Sound Limited | Private company limited by shares | Live |
| FAST SOUND LIMITED | Private company limited by shares | Live |
| SOUND FAST LIMITED | Private company limited by shares | Dissolved |
| Favorite Sound Company Limited | Private company limited by shares | Live |
| Fenty Sound Co., Limited | Private company limited by shares | Live |
| SOUND FIELD LIMITED | Private company limited by shares | Dissolved |
| SOUND FIELD LIMITED | Private company limited by shares | Dissolved |
| SOUND FIELD DEVELOPMENT LIMITED | Private company limited by shares | Live |
| SOUND FIELD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOUND DRAGON FILMS DISTRIBUTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| LONG SOUND FINANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND FINANCIAL LIMITED | Private company limited by shares | Dissolved |
| FINE SOUND LIMITED | Private company limited by shares | Dissolved |
| Fleet Sound Limited | Private company limited by shares | Live |
| SOUND OF FLUIDZ LIMITED | Private company limited by shares | Live |
| FOCUS SOUND COMPANY LIMITED | Private company limited by shares | Live |
| Foggy Sound Garden Limited | Private company limited by shares | Live |
| FORCE SOUND LIMITED | Private company limited by shares | Dissolved |
| FOREVER SOUND LIMITED | Private company limited by shares | Live |
| FORTUNATE SOUND LIMITED | Private company limited by shares | Live |
| FORTUNE SOUND LIMITED | Private company limited by shares | Live |
| SOUND FORTUNE LIMITED | Private company limited by shares | Live |
| Fortune Sound Centre Limited | Private company limited by shares | Live |
| SOUND FORTUNE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOUND FORTUNE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOUND FOUNDATION LIMITED | Private company limited by shares | Dissolved |
| FOUNTAIN SOUND LIMITED | Private company limited by shares | Dissolved |
| FOXTER SOUND LIMITED | Private company limited by shares | Live |
| FREE SOUND LIMITED | Private company limited by shares | Dissolved |
| Freedom Sound Holdings HK Limited | | Live |
| FRESH SOUND LIMITED | Private company limited by shares | Dissolved |
| FRIEND SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND CREATION ELECTRONICS FTY., LIMITED | Private company limited by shares | Dissolved |
| FULL SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND FULL LIMITED | Private company limited by shares | Dissolved |
| FULL SOUND ENTERPRISE CO., LIMITED | Private company limited by shares | Dissolved |
| Sound and Fury Images Limited | Private company limited by shares | Dissolved |