| Cyber Sins Limited | Private company limited by shares | Live |
| SIN'S ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| SIN'S INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sinsa-dong Pocha (Yuen Long) Limited | | Live |
| Sinsa-dong Pocha(Tai Kok Tsui) Limited | | Live |
| Sinsagom International Limited | Private company limited by shares | Live |
| SINSAM-TEC LIMITED | Private company limited by shares | Live |
| SINSANG INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| SINSBURY LIMITED | Private company limited by shares | Dissolved |
| SINSCO ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| Sinsea Sports Company Limited | | Live |
| SINSEER HARDWARE LIMITED | Private company limited by shares | Dissolved |
| SINSENVIDEO LIMITED | Private company limited by shares | Live |
| SINSHARP LIMITED | Private company limited by shares | Dissolved |
| SINSHENG INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINSHIN COMPANY LIMITED | Private company limited by shares | Live |
| SINSHIN COMPANY LIMITED | Private company limited by shares | Live |
| SINSHIN TRADING DEVELOP LIMITED | | Live |
| SINSHIN (HONG KONG) TRADE CO., LIMITED | | Live |
| HK SINSHIN INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SINSHIN TECHNOLOGY CO. LIMITED | Private company limited by shares | Live |
| SINSHIN TRADING LIMITED | Private company limited by shares | Live |
| SINSHIN TRADING CO., LIMITED | Private company limited by shares | Live |
| REAYOU SINSHIN TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| SINSHIN TECHNOLOGY TRADING LIMITED | | Live |
| Sinsing Industrial Corporation Limited | Private company limited by shares | Live |
| SINSING MEDICINE CO., LIMITED | Private company limited by shares | Dissolved |
| SINSO DESIGN CO., LIMITED | Private company limited by shares | Live |
| Sinso Design Engineering Limited | Private company limited by shares | Live |
| Sinso Graphic Advertising Company Limited | Private company limited by shares | Live |
| SV SINSO OVERSEAS LIMITED | Private company limited by shares | Live |
| SINSPEC HK LIMITED | Private company limited by shares | Live |
| SINSTANT COMPANY LIMITED | Private company limited by shares | Live |
| Sinstar Co., Limited | | Live |
| SINSTAR APPLIANCES CO., LIMITED | Private company limited by shares | Live |
| SINSTAR HOME APPLIANCES CO., LIMITED | Private company limited by shares | Live |
| SINSTAR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINSTAR TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| SINSTAR TRADING LIMITED | Private company limited by shares | Dissolved |
| SINSTAR INTERNATIONAL TRADING LIMITED | | Live |
| ASIA SINSUN TRADE CO., LIMITED | Private company limited by shares | Live |
| SINSUN Electronics Limited | | Live |
| SINSUN INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| HK SINSUN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINSUN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINSYA GROUP LIMITED | Private company limited by shares | Live |