| 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 |
| ORIENTAL SILICON LIMITED | Private company limited by shares | Live |
| HK SILICON PHOTONICS TECHNOLOGY COMPANY LIMITED | | Live |
| SILICON PIONEER (CHINA) CORP. LIMITED | Private company limited by shares | Dissolved |
| SILICON POWER COMPANY LIMITED | Private company limited by shares | Dissolved |
| PRINCETON SILICON LIMITED | Private company limited by shares | Live |
| DONGGUAN CROWN SILICON PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| SILICON PROFESSIONAL TECHNOLOGY HONG KONG LIMITED | Private company limited by shares | Live |
| SILICON PROFESSIONAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Proteus Silicon Solutions Limited | Private company limited by shares | Live |
| Silicon Rabbit Limited | Private company limited by shares | Live |
| SILICON RESOURCES LIMITED | Private company limited by shares | Live |
| RIVER SILICON LIMITED | | Live |
| YunFeng Silicon Rubber (HongKong) Co., Limited | Private company limited by shares | Live |
| XIN GAO SILICON RUBBER (H.K.) LIMITED | Private company limited by shares | Dissolved |
| FOCUS SILICON RUBBER INDUSTRIAL CO., LIMITED | Private company limited by shares | Dissolved |
| AONA SILICON RUBBER PRODUCT INDUSTRY LIMITED | Private company limited by shares | Live |
| MQ Silicon Rubber Products Co., Limited | Private company limited by shares | Live |
| HK SANKE SILICON RUBBER PRODUCTS LIMITED | Private company limited by shares | Live |
| SHENZHENCITY HONGYA SILICON RUBBER PRODUCTS LIMITED | Private company limited by shares | Live |
| SUNNY PEAK SILICON RUBBER CO., LIMITED | Private company limited by shares | Live |
| BEN VICTOR SILICON RUBBER LIMITED | Private company limited by shares | Dissolved |
| WEIYI SILICON RUBBER (HK) LIMITED | Private company limited by shares | Live |
| SANDE SILICON PLASTIC INDUSTRY LIMITED | Private company limited by shares | Live |
| EASTERN SILICON SCREENING LIMITED | Private company limited by shares | Dissolved |
| Silicon Valley Semiconductor Consulting Group Limited | Private company limited by shares | Live |
| Silicon Silk Limited | | Live |
| SILICON SINO CORPORATION LIMITED | Private company limited by shares | Live |
| SINO SILICON INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Sino Silicon Technology Co., Limited | Private company limited by shares | Live |
| Silicon Software Limited | Private company limited by shares | Live |
| SILICON SOLAR LIMITED | Private company limited by shares | Dissolved |
| SILICON SOURCE ASIA LIMITED | Private company limited by shares | Dissolved |
| S3-SECOND SILICON SOURCE LIMITED | Private company limited by shares | Dissolved |
| TOP SILICON STEEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WING KAN SILICON STEEL MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| WAH KONG SILICON STEEL PRODUCTS COMPANY LIMITED | Private company limited by shares | Live |
| Silicon Steel Software Limited | Private company limited by shares | Live |
| SUNLIGHT SILICON COMPANY LIMITED | Private company limited by shares | Live |
| SILICON VALLEY SYSTECH (HK) LIMITED | Private company limited by shares | Dissolved |
| SILICON SYSTEM LIMITED | Private company limited by shares | Dissolved |
| TACH-KUMYR SILICON PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| TAIWAN SILICON MICROELECTRONICS CORP. LIMITED | Private company limited by shares | Dissolved |
| TAIWAN SILICON MICROELECTRONICS CO. LIMITED | Private company limited by shares | Dissolved |
| GREEN SOLAR AND SILICON TECH (HK) LIMITED | Private company limited by shares | Dissolved |
| SILICON TECH SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Lightspeed Silicon Technologies Limited | Private company limited by shares | Live |
| Silicon Valley Technologies Co., Limited | Private company limited by shares | Live |
| SILICON TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Silicon Technology Limited | | Live |
| SILICON TECHNOLOGY ASIA LIMITED | Private company limited by shares | Live |
| CHINA SILICON TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CHINA SILICON TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SILICON DEVICES TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SILICON INSPECTION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SILICON POWER TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Smart Silicon Technology Limited | Private company limited by shares | Live |
| BIT SILICON VALLEY BLOCKCHAIN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK Silicon Vision Technology Limited | | Live |
| SILICON TEST SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| Ningxia Tianjing LD Silicon Carbide Co., Limited | Private company limited by shares | Live |