| SUNSTONE COMPANY LIMITED | Private company limited by shares | Live |
| Sunstone DNA Limited | Private company limited by shares | Live |
| Sunstone Advisory Limited | | Live |
| SunStone Casting Limited | Private company limited by shares | Live |
| SUNSTONE CHINA LIMITED | Private company limited by shares | Live |
| SUNSTONE (HK) CO., LIMITED | Private company limited by shares | Live |
| Sunstone Holding Co., Limited | Private company limited by shares | Live |
| Sunstone Power E-commerce Company Limited | Private company limited by shares | Live |
| SUNSTONE ENERGY LIMITED | Private company limited by shares | Live |
| SUNSTONE ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| SUNSTONE GLOBAL LIMITED | | Live |
| SunStone Group Limited | Private company limited by shares | Live |
| SUNSTONE GROUP (CHINA) LIMITED | Private company limited by shares | Dissolved |
| SUNSTONE (H.K.) LIMITED | Private company limited by shares | Dissolved |
| Sunstone KB (HKSAR) Limited | Private company limited by shares | Live |
| HONG KONG SUNSTONE HOLDING LIMITED | Private company limited by shares | Live |
| SUNSTONE DIGITAL (HONGKONG) LIMITED | Private company limited by shares | Live |
| SUNSTONE INDUSTRIAL LIMITED | | Live |
| SUNSTONE INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| SUNSTONE INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SUNSTONE POWER INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Sunstone International Industry And Trade Co., Limited | Private company limited by shares | Live |
| KOMATSU SUNSTONE (CHINA) INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| Sunstone Materials Corporation (HK) Limited | Private company limited by shares | Live |
| Sunstone Partners Limited | | Live |
| Sunstone Property Management Limited | Private company limited by shares | Live |
| SUNSTONE SCIENTIFIC LIMITED | Private company limited by shares | Live |
| Shandong Sunstone Import & Export Co., Limited | | Live |
| SUNSTONE (T&C) LIMITED | Private company limited by shares | Dissolved |
| SUNSTONE TECH COMPANY LIMITED | Private company limited by shares | Live |
| SUNSTONE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SUNSTONE TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| Sunstone Package Technology Co., Limited | Private company limited by shares | Live |
| Sunstone Ships Technology Co., Limited | Private company limited by shares | Live |
| SUNSTONE TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |