| GRADUATE SCHOOL OF CHINESE MANAGEMENT SCIENCE LIMITED | Private company limited by shares | Dissolved |
| SCOUT SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| BYVISION SECURITY SCIENCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ALL SECURITY & NETWORK SCIENCE GROUP LIMITED | Private company limited by shares | Live |
| SCIENCE TECHNOLOGY SECURITY PROTECTION F7 GROUP LIMITED | Private company limited by shares | Live |
| Anxing Security Science & Technology Co., Limited | Private company limited by shares | Live |
| Sentient Science Limited | Private company limited by shares | Live |
| HK Serene Science and Technology Co., Limited | | Live |
| SAILING SCIENCE & SERVICE LIMITED | Private company limited by shares | Live |
| Zhi Shan Science Co., Limited | | Live |
| SHANG HAI QUE YOU SCIENCE CO., LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI PEOPLE SCIENCE HOLDING LIMITED | Private company limited by shares | Live |
| SHANGHAI RENMIN SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| CHONGQING SHANWAISHAN SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SHAP SCIENCE & TECHNOLOGY DEV. (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SCIENCE INT'L TECHNOLOGY SHARE (HK) LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN KAILIDA SCIENCE AND TECHNOLOGY SHARE LIMITED | Private company limited by shares | Live |
| RBK Science Shares Limited | Private company limited by shares | Live |
| SHARK SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN-HONG KONG MEDICAL SCIENCE GROUP LIMITED | Private company limited by shares | Live |
| GERMANY SHIBALU CROP SCIENCE LIMITED | Private company limited by shares | Live |
| Shihong Science and Trade Co., Limited | Private company limited by shares | Live |
| HK SHIHUI SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SHING LEE SCIENCE & TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| SHIROUMA SCIENCE (HK) LIMITED | Private company limited by shares | Dissolved |
| HK ShunYuan Science Information Limited | Private company limited by shares | Live |
| SIEMNGS (HK) SCIENCE TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| Asia Silica Science Association Co. Limited | Private company limited by shares | Live |
| HK SILIYANG SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SILK ROAD SCIENCE INNOVATION HK LIMITED | Private company limited by shares | Live |
| GENERAL SIMULATOR SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINCETIMES HK SCIENCE COMPANY LIMITED | Private company limited by shares | Live |
| Sine Science Tech Limited | Private company limited by shares | Live |
| SING TAI INTERNATIONAL LIFE SCIENCE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Ngai Sing Electronic Science and Technology Limited | Private company limited by shares | Live |
| Singa Science And Technology Limited | Private company limited by shares | Live |
| HONG KONG SINO-POWER SCIENCE & TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINOTT SCIENCE & TECHNOLOGY (CHINA) CO., LIMITED | Private company limited by shares | Dissolved |
| SIPHONE SCIENCE AND TECHNOLOGY LIMITED | | Live |
| Siuma Science Education Limited | | Live |
| Sizy Science and Technology Co., Limited | Private company limited by shares | Live |
| Skysymbol Science and Technology (HongKong) Co., Limited | Private company limited by shares | Dissolved |
| SMARTISYS SCIENCE AND TECHNOLOGY CO. LIMITED | Private company limited by shares | Live |
| NANO SCIENCE SOLUTIONS LIMITED | Private company limited by shares | Live |
| Sootech Science and Trading (HK) Co., Limited | Private company limited by shares | Live |
| Bin Source (Hongkong) Science & Technology Co., LIMITED | Private company limited by shares | Live |
| South Sea Science Limited | Private company limited by shares | Live |
| SOUTHENVIC SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Soyes Science Technology Limited | Private company limited by shares | Live |
| New Sky Space Science Limited | Private company limited by shares | Live |
| HK Walk Space Science and Technology Co., Limited | Private company limited by shares | Live |
| Sparkhope Science Limited | Private company limited by shares | Live |
| Sparkhope Science Limited | | Live |
| SPECO OPHTHALMIC SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| STARCON SCIENCE TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| HK STARVIEW SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| China State Construction Science and Technology Limited | Private company limited by shares | Live |
| NEXT STATION SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| STEEMA SCIENCE LIMITED | Private company limited by shares | Live |
| ASIA SCIENCE ACADEMY STOCK LIMITED | Private company limited by shares | Dissolved |
| NEW STONE SCIENCE & TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| SCIENCE STORYLAB LIMITED | Private company limited by shares | Live |
| Strand & Science Limited | Private company limited by shares | Live |
| Strong Science Technology Limited | | Live |
| Poly (China) Heritage Association for the Study of Science and Technology Limited | Private company limited by shares | Live |
| Succeed Science Co., Limited | Private company limited by shares | Live |
| Sunbeams Biomedical Science Limited | Private company limited by shares | Live |
| Sunbright Science Co., Limited | | Live |
| HK SUNNYROAD SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Sunrich Science and Technology Limited | | Live |
| Sunshine Science and trade Co., Limited | | Live |
| SUNSHINE SCIENCE GROUP CO., LIMITED | Private company limited by shares | Live |
| SUNSHINE SCIENCE GROUPS (H.K.) LIMITED | Private company limited by shares | Live |
| Sunshine Science Technology Limited | Private company limited by shares | Dissolved |
| SUNSHINE SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SUNSHINE GROUND SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Sunway Science and Technology Limited | Private company limited by shares | Live |
| SUOYIDA Science and Technology Limited | Private company limited by shares | Live |
| Supernova Life Science Limited | Private company limited by shares | Live |
| Pure Science Supplements Limited | Private company limited by shares | Live |
| Max Support Science And Technology Limited | Private company limited by shares | Live |
| SWEDEN ABYY SCIENCE (ASIA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sweden ELAS Science and Technology Limited | | Live |
| SYMBIO SCIENCE EDUCATION CENTRE LIMITED | Private company limited by shares | Live |
| TAITONG SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| TAIWAN JIAMEI BIOLOGIC SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TAIWAN SCIENCE MEHON TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HUNAN TANE SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| Targeting Science Limited | | Live |
| XI AN TBIO CROP SCIENCE CO., LIMITED | Private company limited by shares | Live |
| TEAMTEK SCIENCE TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| SCIENCE TECH LIMITED | Private company limited by shares | Live |
| GA Science Tech Company Limited | Private company limited by shares | Live |
| SCIENCE TECH LIMITED | Private company limited by shares | Live |
| BOWIE LEE SCIENCE & TECH CO., LIMITED | Private company limited by shares | Live |
| EMA DIGITAL SCIENCE & TECH CO., LIMITED | Private company limited by shares | Live |
| Win Tech Science (Hongkong) Co., Limited | Private company limited by shares | Live |
| JETFIRE SCIENCE & TECH (HK) LIMITED | Private company limited by shares | Live |
| Kingway Science Tech Limited | Private company limited by shares | Live |
| REALTIME SCIENCE & TECH LIMITED | Private company limited by shares | Live |