| STUDIOKING SOUND & INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |
| SOUND SUCCESS LIMITED | Private company limited by shares | Dissolved |
| Success Sound Company Limited | | Live |
| Sound Summer (Hong Kong) Limited | Private company limited by shares | Live |
| SUNNY SOUND LIMITED | Private company limited by shares | Live |
| SUPER SOUND LIMITED | Private company limited by shares | Dissolved |
| SUPER SOUND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SUPER SOUND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUPERIOR SOUND CAR AUDIO FACTORY LIMITED | Private company limited by shares | Live |
| SOUND OF STRINGS AUDIO SUPPLIES LIMITED | Private company limited by shares | Live |
| KOBOL SOUND SUPPLIES LIMITED | Private company limited by shares | Live |
| Supreme Sound Supplies Limited | Private company limited by shares | Dissolved |
| WISE SOUND SUPPLIES LIMITED | Private company limited by shares | Live |
| SOUND WORKS & SUPPLIES LIMITED | Private company limited by shares | Live |
| SOUND WORKS & SUPPLIES (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| SOUND SUPPLY LIMITED | Private company limited by shares | Dissolved |
| SUPREME SOUND LIMITED | Private company limited by shares | Dissolved |
| SURE SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| SWEET SOUND COMPANY LIMITED | Private company limited by shares | Live |
| SWEET SOUND INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| HK JV SWETZ SOUND LIMITED | Private company limited by shares | Live |
| SOUND SYSTEM LIMITED | Private company limited by shares | Dissolved |
| SOUND SYSTEM PARADISE LIMITED | Private company limited by shares | Live |
| ACUSONIC SOUND SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| CYBER SOUND SYSTEMS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAKE SOUND LIMITED | Private company limited by shares | Live |
| HONGKONG TALENT (INTERNATIONAL) ELECTRONIC SOUND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| TALENT SOUND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND TARGET LIMITED | Private company limited by shares | Dissolved |
| SOUND TARGET INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUND TEAM LIMITED | Private company limited by shares | Dissolved |
| TEAM SOUND LIMITED | Private company limited by shares | Live |
| TECH SOUND ENTERPRISES LIMITED | Private company limited by shares | Live |
| SOUND TECH INNOVATIONS LIMITED | Private company limited by shares | Live |
| SOUND TECH INVESTMENTS LIMITED | Private company limited by shares | Live |
| Music Sound Tech Limited | | Live |
| SOUND TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Cambridge Sound Technologies Limited | Private company limited by shares | Live |
| SOUND PIXEL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SOUND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ART SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SOUND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| GOX SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NEW SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| China Prolight & Sound Technology Association Limited | Private company limited by shares | Live |
| HK SOUND KA VIDEO TECHNOLOGY & CULTURAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| SOUND ELECTRONIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| LI SOUND ELECTRONIC TECHNOLOGY CO., LIMITED | | Live |
| EVER SOUND AV TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| FINE SOUND TECHNOLOGY (HK) LIMITED | Private company limited by shares | Dissolved |
| FREE SOUND TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| GLORY SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Sound Blockchain Technology Hong Kong Limited | Private company limited by shares | Live |
| HK LOUD SOUND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| MAGIC SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| MAGIC SOUND TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| NATURAL SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| OCEAN SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SMART SOUND TECHNOLOGY CO ., LIMITED | | Live |
| SOUND SYSTEM TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TEANA SOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TOPWIN SOUND AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| SOUND TRUE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SOUND WELL TECHNOLOGY (ASIA) LIMITED | Private company limited by shares | Live |
| SOUND WELL TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| TELE SOUND LIMITED | Private company limited by shares | Dissolved |
| SKY SOUND TELECOM LIMITED | Private company limited by shares | Live |
| Thinktech Sound & Vibration Company Limited | Private company limited by shares | Live |
| THUNDER SOUND INDUSTRIAL LIMITED | | Live |
| THUNDER SOUND INVESTMENTS LIMITED | Private company limited by shares | Live |
| HK THUNDER SOUND TECHNOLOGY LIMITED | | Live |
| SOUND & TIME LIMITED | Private company limited by shares | Dissolved |
| SOUND TIME LIMITED | Private company limited by shares | Dissolved |
| Sound Touch (HK) Limited | Private company limited by shares | Live |
| SOUND & TOYS COMPANY LIMITED | Private company limited by shares | Live |
| SOUND TRACK INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOUND TRADE LIMITED | Private company limited by shares | Dissolved |
| TRADE SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND WAY TRADING LIMITED | Private company limited by shares | Dissolved |
| SOUND WIN TRADING LIMITED | Private company limited by shares | Live |
| JOY SOUND TRADING LIMITED | Private company limited by shares | Live |
| DON SOUND TRADING LIMITED | Private company limited by shares | Live |
| Sound Cat Trading Company Limited | | Live |
| BEST SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| CHINA SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| FORTUNE SOUND TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| Dream Sound Trading Limited | Private company limited by shares | Live |
| EVER SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| SOUND FINANCIAL TRADING LIMITED | Private company limited by shares | Dissolved |
| FRIEND SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| GAIN SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| SOUND MASTER TRADING LIMITED | Private company limited by shares | Dissolved |
| NICE SOUND TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORIENT SOUND TRADING LIMITED | Private company limited by shares | Live |
| RICH SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| RONG SOUND TRADING CO., LIMITED | Private company limited by shares | Live |
| SECURE SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| TALENT SOUND TRADING LIMITED | Private company limited by shares | Dissolved |
| VENTURE SOUND TRADING LIMITED | Private company limited by shares | Dissolved |