| SCI, LIMITED | Private company limited by shares | Dissolved |
| GERMANY WEISITE SCI. & TECH. LIMITED | Private company limited by shares | Live |
| GERMANY WEISITE SCI. & TECH. LIMITED | Private company limited by shares | Live |
| CHINA MEDICAL SCI. & TECH. INV. GROUP LIMITED | Private company limited by shares | Dissolved |
| CHINA MEDICAL SCI. & TECH. INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| S.C.I.A HK LIMITED | Private company limited by shares | Dissolved |
| SCIA ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| SCIA Holding Limited | Private company limited by shares | Live |
| SCIA LE SUPERBE LIMITED | Private company limited by shares | Live |
| SCIANSAMINE INTERTRADE SERVICES COMPANY LIMITED | Private company limited by shares | Live |
| HK Sciaps Instrument Co., Limited | | Live |
| SciArt Education Co., Limited | Private company limited by shares | Live |
| SCIART INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Live |
| Yiniao Sci-Art Share Limited | Private company limited by shares | Live |
| SCIBERRY LIMITED | Private company limited by shares | Dissolved |
| SCI-Bridge (H.K) Trader Company Limited | Private company limited by shares | Live |
| Sci-bridge Instrument Trading Co., Limited | | Live |
| SCIC CHINA LIMITED | Private company limited by shares | Live |
| SCICENT TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| Scichiho Consulting Services Co., Limited | Private company limited by shares | Live |
| SCI-CITY LIMITED | Private company limited by shares | Live |
| SCICO (HK) LIMITED | Private company limited by shares | Live |
| SCICO INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Scico Technology Company Limited | Private company limited by shares | Live |
| SCICORP (CHINA) CO. LIMITED | Private company limited by shares | Live |
| SCICUBE LIMITED | Private company limited by shares | Live |
| SCICUE LIMITED | Private company limited by shares | Dissolved |
| SCIDE GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| SCIDEA LIMITED | Private company limited by shares | Dissolved |
| SCIDIC TECHNOLOGY LIMITED | | Live |
| SCI-DISTINCT LIMITED | Private company limited by shares | Dissolved |
| SCIEA LIMITED | Private company limited by shares | Dissolved |
| SCIECO (HK) LIMITED | Private company limited by shares | Live |
| SCIECO MOTION LIMITED | Private company limited by shares | Live |
| HINGSON SCI-ED SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| BOB SCIEN CO., LIMITED | Private company limited by shares | Live |
| SCI-EN PRODUCTS COMPANY LIMITED | Private company limited by shares | Live |
| SCIEN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SCIENART (ASIA) LIMITED | Private company limited by shares | Dissolved |
| Sciencare Holding (HK) Limited | Private company limited by shares | Live |
| Sciencare International Limited | Private company limited by shares | Live |
| New Sun Bio Science Limited | Private company limited by shares | Live |
| COM SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| LAP SCIENCE CO. LIMITED | Private company limited by shares | Dissolved |
| H V L SCIENCE LIMITED | Private company limited by shares | Live |
| LT & B SCIENCE LIMITED | Private company limited by shares | Dissolved |
| Science Un Limited | Private company limited by shares | Live |
| SCIENCE MAN LIMITED | Private company limited by shares | Live |
| K. SCIENCE LIMITED | Private company limited by shares | Live |
| Ark Science Limited | Private company limited by shares | Dissolved |
| SUN BIG PIG SCIENCE LIMITED | Private company limited by shares | Live |
| XJS Science Limited | Private company limited by shares | Live |
| JOB SCIENCE LIMITED | Private company limited by shares | Live |
| HK Ohm Science Limited | Private company limited by shares | Live |
| BN SCIENCE LIMITED | Private company limited by shares | Live |
| Ava Science Limited | Private company limited by shares | Live |
| RUI SCIENCE COMPANY LIMITED | Private company limited by shares | Live |
| KLD SCIENCE LIMITED | Private company limited by shares | Live |
| HFC Science Limited | Private company limited by shares | Live |
| ZR8 SCIENCE LIMITED | Private company limited by shares | Live |
| KL SCIENCE LIMITED | | Live |
| AFA SCIENCE LIMITED | | Live |
| HK 8C8C NETWORK SCIENCE CO., LIMITED | Private company limited by shares | Dissolved |
| ABiome (Hong Kong) Life Science Limited | | Live |
| CHINA ACADEMY OF WISDOM SCIENCE CO., LIMITED | Private company limited by shares | Live |
| CHINA ACADEMY OF MARKETING SCIENCE LIMITED | Private company limited by shares | Dissolved |
| CHINESE PEOPLE ACADEMY OF SCIENCE LIMITED | Private company limited by shares | Live |
| Haiku Science Academy Limited | Private company limited by shares | Live |
| HONG KONG PACIFIC ACADEMY OF SCIENCE LIMITED | Private company limited by shares | Live |
| HONG KONG ACADEMY OF SOCIAL SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Academy of Innovation Science LIMITED | Private company limited by shares | Live |
| U.S. ACEGREEN CROP SCIENCE GROUP LIMITED | Private company limited by shares | Live |
| ACEQ SCIENCE AND TECHNOLOGY GROUP CO., LIMITED | Private company limited by shares | Live |
| QIAN YANG ADHESIVE SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ADVANCED SCIENCE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Dragon Aerospace Science Limited | Private company limited by shares | Live |
| Ren Laifeng Agricultural Science Group Co., Limited | | Live |
| CHINA XINGHUO AGRICULTURAL SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HOLLAND ANAMU AGRICULTURAL SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| LVSHUI AGRICULTURAL SCIENCE AND TECHNOLOGY LIMITED | | Live |
| SHIJIN AGRICULTURAL SCIENCE AND TECHNOLOGY LIMITED | | Live |
| USA AILESHI CROP SCIENCE LIMITED | Private company limited by shares | Live |
| ALLIED SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ALLONS SCIENCE LIMITED | Private company limited by shares | Live |
| ALLWANG SCIENCE TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| Alpha Healthcare & Life Science Consulting Limited | Private company limited by shares | Live |
| HKU SCIENCE ALUMNI ASSOCIATION LIMITED | Company limited by guarantee | Live |
| AMAZING HEALTH SCIENCE INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| AMAZON SCIENCE RESEARCH LIMITED | Private company limited by shares | Live |
| Amazon Science & Technology Company Limited | Private company limited by shares | Live |
| America Medic & Science, AMS Limited | Private company limited by shares | Live |
| AMERICA SUNNY SCIENCE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| AMERICA NEW FACE SCIENCE TECHNOLOGY EXPLOITURE COMPANY LIMITED | Private company limited by shares | Dissolved |
| America C&H Science and Technology (HK) Limited | Private company limited by shares | Live |
| American Life Science Pharmaceutical Co., Limited | | Live |
| AMERICAN SCIENCE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| American Life Science Center Limited | Private company limited by shares | Live |
| American Science and Engineering Technology Co., Limited | Private company limited by shares | Live |
| AMERICAN LIFE SCIENCE & TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| AMUSING SCIENCE LIMITED | Company limited by guarantee | Live |