| REYN YANG PROFESSIONAL SOUND & VIDEO EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| RICH SOUND COMPANY LIMITED | Private company limited by shares | Live |
| RICH SOUND INC LIMITED | Private company limited by shares | Live |
| RICH SOUND ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RICH SOUND ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| RIGHT SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND RIGHT LIMITED | Private company limited by shares | Dissolved |
| RIGHT SOUND LIMITED | Private company limited by shares | Live |
| RING SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUND RINGER ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Rippling Sound Limited | Private company limited by shares | Live |
| SOUND RISE LIMITED | Private company limited by shares | Dissolved |
| RISE SOUND LIMITED | Private company limited by shares | Live |
| SOUND RISE ASIA LIMITED | Private company limited by shares | Live |
| SOUND RISE ENTERPRISES LIMITED | Private company limited by shares | Live |
| RISING SOUND LIMITED | Private company limited by shares | Dissolved |
| RISING SOUND LIMITED | Private company limited by shares | Live |
| SOUND RIVER LIMITED | Private company limited by shares | Live |
| Rouge Sound Limited -The- | Private company limited by shares | Live |
| Sound Route Trading Limited | | Live |
| ROYAL SOUND LIMITED | Private company limited by shares | Live |
| ROYAL SOUND INVESTMENTS LIMITED | Private company limited by shares | Live |
| RUBY SOUND LIMITED | Private company limited by shares | Dissolved |
| SADDLE SOUND COMPANY LIMITED | Private company limited by shares | Live |
| TB Sound And Safe Limited | Private company limited by shares | Live |
| SAFE & SOUND COMPANY LIMITED | | Live |
| Safe & Sound Solutions Limited | | Live |
| SAME SOUND LIMITED | Private company limited by shares | Dissolved |
| SAPLE SOUND LIMITED | Private company limited by shares | Dissolved |
| SAVE & SOUND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Sound Library Science And Technology Limited | Private company limited by shares | Live |
| SOUND YEAR SEAFOOD RESTAURANT LIMITED | Private company limited by shares | Dissolved |
| CHINA SOUND SEED COMPANY LIMITED | Private company limited by shares | Live |
| SEEFLOW SOUND LIMITED | Private company limited by shares | Dissolved |
| HAPPY SOUND SERVICE LIMITED | Private company limited by shares | Dissolved |
| SOUND EASE SECRETARIAL SERVICES LIMITED | Private company limited by shares | Dissolved |
| SOUND WAY FREIGHT SERVICES LIMITED | Private company limited by shares | Dissolved |
| JULIANA'S SOUND SERVICES (HK) HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SOUND MANAGEMENT SERVICES LIMITED | Private company limited by shares | Live |
| JULIANA'S SOUND SERVICES (S.E.A.) LIMITED | Private company limited by shares | Dissolved |
| SOUND SECRETARIAL SERVICES LIMITED | Private company limited by shares | Live |
| SOLOSA SOUND SERVICES (HK) LIMITED | Private company limited by shares | Dissolved |
| SOUND WELL SERVICES LIMITED | Private company limited by shares | Dissolved |
| Sound of Win (sharewinlogy) Limited -The- | Private company limited by shares | Live |
| SHARK SOUND ELECTRONICS LIMITED | Private company limited by shares | Live |
| SHARP SOUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHEEN SOUND LIMITED | Private company limited by shares | Dissolved |
| SIGHT & SOUND LIMITED | Private company limited by shares | Dissolved |
| Sound of Silence Company Limited | Private company limited by shares | Live |
| SILVER SOUND LIMITED | Private company limited by shares | Dissolved |
| SILVER SOUND LIMITED | Private company limited by shares | Dissolved |
| SILVER SOUND LIMITED | Private company limited by shares | Dissolved |
| SILVER SOUND LIMITED | Private company limited by shares | Dissolved |
| SILVER SOUND LIMITED | Private company limited by shares | Live |
| SINCERE SOUND INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Sound & Sincere Investment Limited | Private company limited by shares | Live |
| SOUND SINCERE TRADING LIMITED | Private company limited by shares | Dissolved |
| SING SOUND EQUIPMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| SING SOUND (HK) INDUSTRIAL CO., LIMITED | Private company limited by shares | Dissolved |
| SING SOUND CHINA ENTERTAINMENT MANAGEMENT LIMITED | Private company limited by shares | Live |
| SINO SOUND LIMITED | Private company limited by shares | Live |
| SINO SOUND BULLION LIMITED | Private company limited by shares | Live |
| Sino Sound Development Limited | Private company limited by shares | Live |
| SINO SOUND HOLDINGS LIMITED | Private company limited by shares | Live |
| Hong Kong Sino Sound International Limited | Private company limited by shares | Live |
| SINO SOUND INVESTMENT LIMITED | Private company limited by shares | Live |
| Sino Sound Investment Holdings Limited | Private company limited by shares | Live |
| SINO SOUND PRECIOUS METALS LIMITED | Private company limited by shares | Live |
| SINO SOUND PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| SINO SOUND WISDOM TREASURY LIMITED | Private company limited by shares | Live |
| SLIGHT SOUND LIMITED | Private company limited by shares | Live |
| SOCIALLY SOUND LIMITED | Company limited by guarantee | Live |
| SOCIETY FOR SOUND HEARING INTERNATIONAL LIMITED | Company limited by guarantee | Live |
| Sound Solutions Asia Limited | Private company limited by shares | Live |
| SOUND BLAST SONIC POWER COMPANY LIMITED | Private company limited by shares | Live |
| SOUND OF SOUL LIMITED | Private company limited by shares | Live |
| SOUND SOURCE GIANT INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SPACE SOUND LIMITED | Private company limited by shares | Dissolved |
| Sound Space Limited | | Live |
| SOUND SPARK LIMITED | Private company limited by shares | Dissolved |
| SPECIAL SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND SPEED LIMITED | Private company limited by shares | Dissolved |
| SOUND SPEED INVESTMENT LIMITED | Private company limited by shares | Live |
| SPEEDY SOUND LIMITED | Private company limited by shares | Live |
| SOUND SPIRIT LIMITED | Private company limited by shares | Dissolved |
| SPRING SOUND ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SPRING SOUND INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| STAR SOUND LIMITED | Private company limited by shares | Dissolved |
| SOUND STAR LIMITED | Private company limited by shares | Dissolved |
| STAR SOUND INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOUND STATION LIMITED | Private company limited by shares | Dissolved |
| SOUND STEP LIMITED | Private company limited by shares | Dissolved |
| SOUND STRATEGY LIMITED | Private company limited by shares | Dissolved |
| SOUND STRENGTH LIMITED | Private company limited by shares | Live |
| 108 SOUND STUDIO LIMITED | Private company limited by shares | Dissolved |
| Q2 SOUND STUDIO LIMITED | Private company limited by shares | Live |
| One Cool Sound Studio Limited | Private company limited by shares | Live |
| SOUND OF MUSIC STUDIO LIMITED | Private company limited by shares | Live |
| SOUND OFFICE MUSIC PRODUCTION & STUDIO LIMITED | Private company limited by shares | Dissolved |
| STUDIOKING SOUND & INSTRUMENT (ASIA) LIMITED | Private company limited by shares | Live |