| Silicon Integrated (HK) Co. Limited | Private company limited by shares | Live |
| KEEPINGYET SILICON (HK) CO., LIMITED | Private company limited by shares | Live |
| SILICON MAGIC (HK) LIMITED | Private company limited by shares | Dissolved |
| MINGRUI SILICON INDUSTRY (H.K) COMPANY LIMITED | Private company limited by shares | Live |
| RAPID SILICON (HK) LIMITED | Private company limited by shares | Live |
| TSR SILICON RESOURCES (HK) LIMITED | Private company limited by shares | Dissolved |
| SUNFAITH SILICON (HK) LIMITED | Private company limited by shares | Live |
| SILICON TECHNOLOGY (H.K.) CO., LIMITED | Private company limited by shares | Live |
| SILICON LINK (HK) TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| XIONGHUA SILICON TECHNOLOGY (H.K.) CO., LIMITED | Private company limited by shares | Dissolved |
| Upstar Silicon (HK) Limited | Private company limited by shares | Live |
| Silicon Valley Intelligent INT (HK) Ind Limited | Private company limited by shares | Live |
| SILICON VISION (HK) LIMITED | Private company limited by shares | Live |
| H.K. YONGWANG SILICON INVESTMENT LIMITED | Private company limited by shares | Live |
| SILICON HOLDINGS LIMITED | Private company limited by shares | Live |
| Silicon TX Holdings HK Limited | Private company limited by shares | Live |
| CHINA SILICON HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| China Silicon Industry Holdings Limited | Private company limited by shares | Live |
| SILICON VALLEY HOLDINGS LIMITED | | Live |
| SILICON HOME LIMITED | Private company limited by shares | Dissolved |
| Asia Silicon Hong Kong Company Limited | Private company limited by shares | Live |
| HONG KONG SILICON CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Honest Silicon Co., Limited | Private company limited by shares | Live |
| HONG KONG SILICON INDUSTRY RESOURCES LIMITED | Private company limited by shares | Live |
| MANAMAY SILICON HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG HUA DI SILICON MATERIALS LIMITED | Private company limited by shares | Dissolved |
| Silicon Mitus Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG SILICON POWER TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SILICON VALLEY TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SILICON VALLEY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| XINYI SILICON (HONG KONG) LIMITED | | Live |
| HONGKONG UBO SILICON CO., LIMITED | Private company limited by shares | Live |
| HONGKONG SILICON TRADE CO., LIMITED | Private company limited by shares | Live |
| SILICON ELECTRONICS (HONGKONG) TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Farout Silicon (HongKong) Limited | Private company limited by shares | Live |
| HONGKONG LION SILICON METAL CO., LIMITED | Private company limited by shares | Dissolved |
| KEZHAN ORGANIC SILICON (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| XIKA (HONGKONG) ORGANIC SILICON LIMITED | Private company limited by shares | Live |
| HONGKONG SILICON RADIO CO., LIMITED | Private company limited by shares | Live |
| HongKong Hengrui Silicon Rubber Co., Limited | Private company limited by shares | Live |
| SILICON TECHNOLOGY (HONGKONG) ELECTRONIC LIMITED | Private company limited by shares | Live |
| HongKong Long Silicon Technology Limited | | Live |
| HONGKONG SILICON VALLEY LIMITED | Private company limited by shares | Live |
| DONG GU INDUSTRIAL SILICON CO., LIMITED | Private company limited by shares | Dissolved |
| SILICON VALLEY INDUSTRIAL DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| SILICON INDUSTRIES LIMITED | | Live |
| NEW CENTURY SILICON INDUSTRIES (H.K.) CO., LIMITED | Private company limited by shares | Dissolved |
| ANXING SILICON INDUSTRY COMPANY LIMITED | Private company limited by shares | Live |
| ASIA SILICON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Minmetals Silicon Industry Co., LIMITED | | Live |
| ZHENGXIN SILICON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| SILICON INNOVATION LIMITED | Private company limited by shares | Dissolved |
| Gaia Silicon Valley Ai Institute Limited | | Live |
| SILICON VALLEY INSTRUMENTS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SILICON INTEGRATED SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Intelligence Silicon Technology H.K. Limited | Private company limited by shares | Live |
| SILICON INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SILICON H&H INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SILICON COMPILATION TECHNOLOGY INTERNATIONAL (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| CREATIVE SILICON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SILICON ELECTRONICS (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| SILICON ENERGY INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| SILICON FEDERATION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Silicon International Group Limited | Private company limited by shares | Live |
| HONG KONG INTERNATIONAL SILICON VALLEY LIMITED | Private company limited by shares | Live |
| SILICON LIFESTYLE INTERNATIONAL LIMITED | Private company limited by shares | Live Commenced dormancy on 22-Jul-2015 |
| Silicon International Resources Limited | Private company limited by shares | Live |
| SILICON TECHNOLOGY INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SILICON VALLEY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| USA DAOBI ORGANIC SILICON MATERIALS INT'L LIMITED | Private company limited by shares | Live |
| SILICON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SILICON ISLAND LIMITED | Private company limited by shares | Live |
| SILICON JADE LIMITED | Private company limited by shares | Live |
| Silicon Jazzy Technology (HK) Co., Limited | | Live |
| Jiangsu Qiantong Silicon Co., Limited | Private company limited by shares | Live |
| Silicon Kingwin (Hong Kong) Limited | | Live |
| SILICON LAB. LIMITED | Private company limited by shares | Dissolved |
| SILICON LABORATORIES ASIA PACIFIC, LIMITED | Private company limited by shares | Live |
| Silicon Sensor Labs Limited | Private company limited by shares | Live |
| SILICON LIVES LIMITED | Private company limited by shares | Dissolved |
| SILICON LOGIC LIMITED | Private company limited by shares | Dissolved |
| SILICON VALLEY CONSTRUCTION MANAGEMENT HOLDING LIMITED | Private company limited by shares | Live |
| CHINA SILICON VALLEY INVESTMENT MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| SILICON SMT MANUFACTURERS LIMITED | Private company limited by shares | Dissolved |
| Jinsheng Hongda Silicon Material Co., Limited | | Live |
| YUNSHENG SILICON MATERIAL CO., LIMITED | Private company limited by shares | Live |
| EAST SILICON MATERIAL CO., LIMITED | | Live |
| KEHUA SILICON GEL MATERIAL LIMITED | Private company limited by shares | Dissolved |
| SILICON SOLAR MATERIALS COMPANY LIMITED | Private company limited by shares | Live |
| Maxwell Silicon Limited | | Live |
| Silicon Metal Limited | | Live |
| Micro Silicon Carbide Co., Limited | Private company limited by shares | Live |
| Silicon Micro Electronics Co., Limited | Private company limited by shares | Live |
| SILICON MICRO TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| GLORY SILICON MICROELECTRONICS ENTERPRISES LIMITED | Private company limited by shares | Live |
| MONOLITHIC SILICON LIMITED | Private company limited by shares | Live |
| SILICON MOTION HONG KONG LIMITED | Private company limited by shares | Live |
| Silicon Motion Technology (Hong Kong) Limited | Private company limited by shares | Live |
| Silicon Mountain Limited | | Live |
| DAOKANGNING ORGANIC SILICON CO., LIMITED | | Live |