| SINOTEC COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sinotec Limited | | Live |
| SINOTEC (ASIA) LIMITED | Private company limited by shares | Live |
| SINOTEC CAPITAL LIMITED | Private company limited by shares | Dissolved |
| SINOTEC DIGITAL CO., LIMITED | Private company limited by shares | Live |
| SINOTEC ELECTRONIC CO., LIMITED | Private company limited by shares | Dissolved |
| SINOTEC GIFT CO., LIMITED | Private company limited by shares | Live |
| SINOTEC GROUP CO., LIMITED | Private company limited by shares | Live |
| SINOTEC INDUSTRIAL GROUP CO., LIMITED | Private company limited by shares | Live |
| SINOTEC TRADING CO., LIMITED | Private company limited by shares | Live |
| SINOTEC CENTURY TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| SINOTEC CORPORATION CO., LIMITED | Private company limited by shares | Live |
| SINOTEC ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SINOTEC ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| SinoTec Engineering and Trading Limited | Private company limited by shares | Live |
| SINOTEC ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SINOTEC GLOBAL SOLUTIONS CO., LIMITED | Private company limited by shares | Live |
| SINOTEC TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| Sinotec (HK) Co., Limited | Private company limited by shares | Live |
| SINOTEC H.K. INVESTMENTS LIMITED | Private company limited by shares | Live |
| SINOTEC SAFEWAY (HK) TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SINOTEC (HK) TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Sinotec Technology (HK) Co., Limited | | Live |
| SINO-TEC (HK) TRADING COMPANY LIMITED | Private company limited by shares | Live |
| SINOTEC HOLDINGS LIMITED | Private company limited by shares | Live |
| SINOTEC (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SinoTec (HongKong) Co., Limited | Private company limited by shares | Live |
| HONGKONG SINO-TEC CO., LIMITED | Private company limited by shares | Live |
| HK Sinotec Import &Export Co., Limited | Private company limited by shares | Live |
| Sinotec Incorporated Limited | Private company limited by shares | Live |
| Sinotec Industrial Limited | Private company limited by shares | Live |
| SINOTEC INDUSTRIAL HK LIMITED | Private company limited by shares | Live |
| SINOTEC INDUSTRIES CO., LIMITED | Private company limited by shares | Live |
| SINOTEC INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| SINOTEC INSTRUMENT (HK) CO., LIMITED | Private company limited by shares | Live |
| SINOTEC INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SINOTEC INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SINOTEC INTERNATIONAL SANITARY COMPANY LIMITED | Private company limited by shares | Live |
| SINOTEC INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINOTEC INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| International Sinotec Trading Limited | Private company limited by shares | Live |
| Sinotec Electronic Int'l Limited | Private company limited by shares | Live |
| SINOTEC INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINOTEC INVESTMENT MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| SINOTEC MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| SINOTEC MARITIME LIMITED | Private company limited by shares | Live |
| SINOTEC INTERNET MARKETING LIMITED | Private company limited by shares | Dissolved |
| MEGA SINOTEC LIMITED | Private company limited by shares | Live |
| SINOTEC UNION CO., LIMITED | Private company limited by shares | Live |
| SINOTECH LIMITED | Private company limited by shares | Dissolved |
| SINOTECH E & M LIMITED | Private company limited by shares | Live |
| SINOTECH LIMITED | Private company limited by shares | Live |
| NEW SINOTECH LIMITED | Private company limited by shares | Live |
| SINOTECH R&D LIMITED | Private company limited by shares | Live |
| SINOTECH ASIA LIMITED | Private company limited by shares | Live |
| Sinotech Capital Limited | Private company limited by shares | Live |
| Sinotech Ceramics Co ., Limited | Private company limited by shares | Live |
| SINO-TECH COMPONENTS LIMITED | Private company limited by shares | Dissolved |
| SINOTECH DIGITAL LIMITED | Private company limited by shares | Dissolved |
| Sinotech Digital Company Limited | Private company limited by shares | Live |
| SINOTECH ENTERPRISES LIMITED | Private company limited by shares | Live |
| SINOTECH GOLDMINE LIMITED | Private company limited by shares | Live |
| SINOTECH ENTERPRISES (HOLDING) LIMITED | Private company limited by shares | Dissolved |
| SINOTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Sinotech Power Investment Co. Limited | | Live |
| SINOTECH RESOURCES LIMITED | Private company limited by shares | Live |
| SINOTECH CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| SINOTECH SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| SINOTECH SYSTEM LIMITED | Private company limited by shares | Live |
| Sinotech (UK) Limited | Private company limited by shares | Dissolved |
| ADVANCED SINO-TECHNOLOGY CHINA LIMITED | Private company limited by shares | Dissolved |
| Sinoteck HK Company Limited | Private company limited by shares | Live |
| SINOTECNICO (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SINOTECT INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |