| Hong Kong Silic Company Limited | | Live |
| Silica Limited | Private company limited by shares | Live |
| SILICA ASIA LIMITED | Private company limited by shares | Live |
| Silica Materials Co., Limited | Private company limited by shares | Live |
| Sinotech Silica Co., Limited | | Live |
| SILICA GLORY LIMITED | | Live |
| OYUAN SILICA RESOURCES LIMITED | Private company limited by shares | Dissolved |
| FOSHAN JINHUI SILICA GEL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SILICA TRADING LIMITED | Private company limited by shares | Dissolved |
| SILICA TRADING LIMITED | Private company limited by shares | Dissolved |
| TRIMERIZATION SILICA-GEL PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| SILICANO LIMITED | Private company limited by shares | Live |
| SILICASTONE LIMITED | Private company limited by shares | Live |
| KOWLOON SODIUM SILICATE FACTORY, LIMITED | Private company limited by shares | Live |
| TUNG HOI SODIUM SILICATE MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| SILICE LIMITED | Private company limited by shares | Live |
| SILICE HK LIMITED | Private company limited by shares | Dissolved |
| SILICEA LIMITED | Private company limited by shares | Live |
| Siliceous Art Limited | | Live |
| SILICON LIMITED | Private company limited by shares | Dissolved |
| Silicon Lab Company Limited | Private company limited by shares | Live |
| Advance Silicon Limited | Private company limited by shares | Dissolved |
| CHINA AGRICULTURAL SILICON VALLEY GROUP LIMITED | Private company limited by shares | Live |
| SILICON ALLEY.COM LIMITED | Private company limited by shares | Live |
| SILICON APPLICATION COMPANY LIMITED | Private company limited by shares | Live |
| SILICON APPLICATION ELECTRONIC CO., LIMITED | Private company limited by shares | Live |
| SILICON ELECTRONICS APPLICATION CO., LIMITED | Private company limited by shares | Live |
| SILICON APPLICATION (HK) LIMITED | Private company limited by shares | Dissolved |
| SILICON ARCHITECH DESIGNS (HK) LIMITED | Private company limited by shares | Dissolved |
| ARKO SILICON LIMITED | Private company limited by shares | Dissolved |
| SILICON ARTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SILICON VALLEY TECHNOLOGY (ASIA-PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| SILICON AUSPICIOUS (HK) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA AUSUN POLYCRYSTALLINE SILICON HIGH-TECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| Automation on Silicon Limited | Private company limited by shares | Live |
| HK SILICON VALLEY BIOLOGY RESEARCH CENTRE LIMITED | Private company limited by shares | Dissolved |
| Silicon Capital Limited | Private company limited by shares | Live |
| SILICON ONE CAPITAL LLC LIMITED | Private company limited by shares | Live |
| HK CHANGXING SILICON LIMITED | Private company limited by shares | Dissolved |
| KO CHEONG SILICON MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| SILICON CHINA LIMITED | Private company limited by shares | Live |
| GREEN SILICON ENERGY (CHINA) CO. LIMITED | | Live |
| SILICON TEK CO., LIMITED | Private company limited by shares | Live |
| SILICON CO., LIMITED | Private company limited by shares | Live |
| PC SILICON CO., LIMITED | Private company limited by shares | Live |
| LDK Silicon Holding Co., Limited | Private company limited by shares | Live |
| SILICON ELECTRONIC (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Ningxia Dayang Silicon Industry Co., Limited | Private company limited by shares | Dissolved |
| ASIA-PACIFIC LOCKE SOLAR SILICON (HK) IMPORT & EXPORT CO., LIMITED | Private company limited by shares | Dissolved |
| HK METAL SILICON CO., LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN POQ SILICON CO., LIMITED | Private company limited by shares | Live |
| Silicon & System Co., Limited | | Live |
| SILICON TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HK Silicon Technology Co., Limited | Private company limited by shares | Live |
| Silicon Valley Dynamic Co., Limited | Private company limited by shares | Dissolved |
| Silicon Valley Commerce HK Limited | | Live |
| SILICON POWER COMPUTER & COMMUNICATIONS HK LIMITED | Private company limited by shares | Live |
| SILICON VALLEY GROUP OF COMPANIES LIMITED | Private company limited by shares | Dissolved |
| CONSTANT SILICON LIMITED | Private company limited by shares | Live |
| SILICON PACIFIC CONSULTING LIMITED | Private company limited by shares | Dissolved |
| SILICON SOLUTIONS CORPORATION LIMITED | Private company limited by shares | Live |
| SILICON CREATION LIMITED | Private company limited by shares | Live |
| CRYSTAL SILICON NEW ENERGY LIMITED | | Live |
| CHINA CRYSTAL SILICON (HONG KONG) CO. LIMITED | Private company limited by shares | Dissolved |
| CHINA CULTURE SILICON VALLEY LIMITED | Private company limited by shares | Live |
| SILICON DEVELOPMENT (H.K.) LIMITED | Private company limited by shares | Dissolved |
| Silicon Industry Green Development Alliance Limited | Private company limited by shares | Live |
| Silicon Development International Co. Limited | Private company limited by shares | Live |
| ASIA SILICON TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ASIA SILICON TECHNOLOGY DEVELOPMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SILICON DYNAMICS LIMITED | | Live |
| Silicon Valley Dynamics Limited | Private company limited by shares | Live |
| SILICON ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| SILICON SCIENTIFIC ELECTRONICS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SILICON VALLEY ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| Silicon New Energy Technology Limited | Private company limited by shares | Live |
| Ningxia Daxin Ferro Silicon Co., Limited | Private company limited by shares | Dissolved |
| SILICON FORTUNE LIMITED | Private company limited by shares | Dissolved |
| Silicon Fusion Company Limited | Private company limited by shares | Live |
| GLOBAL SILICON LIMITED | Private company limited by shares | Live |
| GoldenSun Silicon Co., Limited | Private company limited by shares | Live |
| SILICON GRAPHICS LIMITED | Private company limited by shares | Live |
| China Green Silicon Valley Technology Co. Limited | Private company limited by shares | Live |
| CHINA GUOYUAN SILICON INDUSTRY GROUP LIMITED | Private company limited by shares | Live |
| SILICON LAKE HI-TECH GROUP LIMITED | Private company limited by shares | Dissolved |
| CHINA XINHONGYANG SILICON & LITHIUM GROUP LIMITED | Private company limited by shares | Dissolved |
| CHINA SILICON MINING INDUSTRY GROUP LIMITED | Private company limited by shares | Dissolved |
| Hensfate Silicon Metal Limited | | Live |
| HI-CHANCE SILICON TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| SILICON HILL LIMITED | | Live |
| HiSpace Silicon Semiconductors Group Limited | Private company limited by shares | Live |
| SILICON HI-TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SILICON (H.K.) LIMITED | Private company limited by shares | Live |
| JPM SILICON (HK) LIMITED | Private company limited by shares | Live |
| SILICON CHINA (HK) LIMITED | Private company limited by shares | Live |
| SILICON ENTERPRISES (H.K.) CO., LIMITED | Private company limited by shares | Live |
| Silicon Stream (HK) CO., Limited | | Live |
| SILICON ENERGY INDUSTRIAL (HK) LIMITED | Private company limited by shares | Dissolved |
| FORMOSA SILICON H.K. COMPANY LIMITED | Private company limited by shares | Live |
| FRONTIER SILICON (HK) LIMITED | Private company limited by shares | Live |