| SALVADOR COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| SanLi Communication Limited | Private company limited by shares | Live |
| SANSI COMMUNICATION LIMITED | Private company limited by shares | Live |
| SANSON ENTERTAINMENT & COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| SANWOKOY COMMUNICATION TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| SATELLITE COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Apec Pacific Satellite Communication Limited | Private company limited by shares | Live |
| CHINA SATELLITE COMMUNICATION GROUP LIMITED | Private company limited by shares | Live |
| China Satellite Communication Technology Limited | Private company limited by shares | Live |
| JANFULL SATELLITE & COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Satellite Communication Solutions Limited | Private company limited by shares | Live |
| SATELLITE COMMUNICATION SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| JANFULL SATELLITE COMMUNICATION & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Scene Creative Communication Limited | Private company limited by shares | Live |
| COMMUNICATION SCHOOL -THE- | Company limited by guarantee | Dissolved |
| POWER SCIENCE AND TECHNOLOGY (HK) COMMUNICATION LIMITED | Private company limited by shares | Live |
| EMD ASIA SCIENTIFIC COMMUNICATION LIMITED | Private company limited by shares | Live |
| SEAPAGE COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| FIRST COMMUNICATION AND SECURITY LIMITED | Private company limited by shares | Dissolved |
| WLY Security Communication Group Limited | Private company limited by shares | Dissolved |
| SENHALL COMMUNICATION LIMITED | Private company limited by shares | Live |
| SENHE COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Seny Communication Technology Co., Limited | Private company limited by shares | Live |
| P & D COMMUNICATION SERVICE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHANDONG COMMUNICATION INDUSTRIAL GROUP CORP. LIMITED | Private company limited by shares | Dissolved |
| SHANG CHANG COMMUNICATION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SHANG HAI CREATOR COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SHENZHEN SHANG HE COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Shanghai Economic And Trade Communication Center Limited | Private company limited by shares | Live |
| SHANGHAI XISI COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SHANGSHAN CULTURAL COMMUNICATION (HK) LIMITED | Private company limited by shares | Live |
| CJ COMMUNICATION SHARE CO., LIMITED | Private company limited by shares | Dissolved |
| SHELEA COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Shemax Communication Co., Limited | Private company limited by shares | Live |
| SHENG FA COMMUNICATION LIMITED | Private company limited by shares | Live |
| ShenZhen Shenghui Communication Co., Limited | Private company limited by shares | Live |
| SHENGXING COMMUNICATION LIMITED | Private company limited by shares | Live |
| HK SHENYING COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SHIN SU COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| ShineVision Communication and Network Technology Limited | Private company limited by shares | Live |
| Poly Shing Communication CO., Limited | Private company limited by shares | Live |
| SHENZHEN SHOUHUBAO COMMUNICATION LIMITED | Private company limited by shares | Live |
| HK SHUANGLIN COMMUNICATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK OuMada Shu-Culture Communication Co., Limited | Private company limited by shares | Live |
| SHUNCHANG HK CULTURAL COMMUNICATION LIMITED | | Live |
| SIEMAX COMMUNICATION TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| SIMPSON COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| HK SINCERE COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SINCERITY COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Sai Gei Hang Sing Int'l Communication Co., Limited | Private company limited by shares | Live |
| Sino-european Cultural Communication Co., Limited | | Live |
| SINOTECH COMMUNICATION LIMITED | Private company limited by shares | Live |
| SINOYAC Chinese Art Communication Co. Limited | Private company limited by shares | Live |
| SINROWELL COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SIZEAD COMMUNICATION LIMITED | Private company limited by shares | Live |
| SKYEY COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Skyline Communication Limited | Private company limited by shares | Live |
| SKYSTAR COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| SKYTEK COMMUNICATION LIMITED | Private company limited by shares | Live |
| SKYUNION COMMUNICATION (HK) LIMITED | Private company limited by shares | Live |
| SKYWAY COMMUNICATION LIMITED | Private company limited by shares | Live |
| Sleepless Communication Limited | Private company limited by shares | Live |
| SLINE COMMUNICATION (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| HK SMART COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| SMART COMMUNICATION LIMITED | Private company limited by shares | Live |
| SMARTPHONE COMMUNICATION TRADING CO., LIMITED | Private company limited by shares | Live |
| Smart-Tech Communication Corporation Limited | Private company limited by shares | Live |
| SMART-TIP COMMUNICATION TECH LIMITED | Private company limited by shares | Dissolved |
| SMARTVOICE COMMUNICATION LIMITED | Private company limited by shares | Live |
| SMAWAN COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Smooth Communication Supply Limited | | Live |
| SNAIL COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| SNUOTONE COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| First Communication Software Limited | Private company limited by shares | Live |
| 360 Degree Communication Solution Limited | Private company limited by shares | Live |
| MBU COMMUNICATION SOLUTIONS CO. LIMITED | Private company limited by shares | Live |
| ASIA COMMUNICATION SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| Wisdom Factory Communication Solutions (HK) Limited | Private company limited by shares | Dissolved |
| EC21 Language and Communication Solutions Limited | Private company limited by shares | Dissolved |
| SONIA COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| Soul Communication Limited | Private company limited by shares | Live |
| TRADING SOURCING COMMUNICATION LIMITED | Private company limited by shares | Live |
| SPARK COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| SPARK CREATIVE COMMUNICATION LIMITED | Private company limited by shares | Live |
| SPECTRUM COMMUNICATION SYSTEM (HK) LIMITED | Private company limited by shares | Dissolved |
| SPEED WAY COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| SPEED COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| SPEED COMMUNICATION NETWORK (HK) LIMITED | Private company limited by shares | Live |
| SPEEDNET COMMUNICATION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SPEEDVOIP COMMUNICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SPEEDY COMMUNICATION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SPEEDY COMMUNICATION SURVEYORS LIMITED | Private company limited by shares | Dissolved |
| FREE SPIRIT COMMUNICATION COMPANY LIMITED | Private company limited by shares | Live |
| Communication Square Limited | Private company limited by shares | Live |
| Communication Standards Limited | Private company limited by shares | Live |
| COMMUNICATION STAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| STAR COMMUNICATION LIMITED | Private company limited by shares | Live |
| TOP STAR COMMUNICATION LIMITED | Private company limited by shares | Live |
| GQ Star Communication Limited | | Live |
| HK Star Entertainment Communication Limited | Private company limited by shares | Dissolved |