| WELLMAY SCIENCE (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| WELLSON SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| WENLEI SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK WEST BIOLOGICAL SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Winner Science Co., Limited | Private company limited by shares | Live |
| WINNER SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| WINNER SCIENCE AND TECHNOLOGY INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| Winners Science Technology HongKong Limited | | Live |
| Winvine science equipment Limited | Private company limited by shares | Live |
| WONDERFUL SCIENCE & TECHNOLOGY HK CO., LIMITED | Private company limited by shares | Live |
| SCIENCE WORKSHOP LIMITED | Private company limited by shares | Live |
| Science Workshop (HK) Limited | Private company limited by shares | Live |
| SCIENCE WORLD LIMITED | Private company limited by shares | Dissolved |
| Science World Limited | Private company limited by shares | Live |
| World Intelligence Science Academy Co., Limited | | Live |
| World Frontier Science Press Co., Limited | Private company limited by shares | Live |
| WORLD OF INNOVATION MEDICAL SCIENCE & ASSOCIATE LIMITED -THE- | Company limited by guarantee | Live |
| SCIENCE RESEARCH WORLD LIMITED | Private company limited by shares | Dissolved |
| WUDING SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| France Carina XiangFen Science Academy Limited | Private company limited by shares | Live |
| Xianhong Science Limited | Private company limited by shares | Live |
| XIAODA SCIENCE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| XINDA SCIENCE INSTRUMENT LIMITED | Private company limited by shares | Live |
| Xinfu Science & Technology Co., Limited | Private company limited by shares | Live |
| XINGHAN SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HK XINGUAN SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| XIN-HAI-YI SCIENCE & TECHNOLOGY INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| GUOMIN XINHE (HK) BIOLOGICAL SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| XINJIE HEALTH CARE SCIENCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Xin-Kerry Science And Technology Co., Limited | Private company limited by shares | Live |
| XINRONG SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| KOREA XINWO LIFE SCIENCE ZHU SHI HUI SHE LIMITED | Private company limited by shares | Dissolved |
| XINYU INTERNATIONAL ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| XITONG INTERNATIONAL SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK YADI SCIENCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| YAHONG SCIENCE &TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HONGKONG YANSHI HEALTH CARE SCIENCE RESEARCH LIMITED | Private company limited by shares | Live |
| HK YASHENG SCIENCE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| CHENGDU YAYUAN SCIENCE AND TECHNOLOGY (HK) LIMITED | Private company limited by shares | Dissolved |
| YEAGOOD SCIENCE & TECHNOLOGY (HK) INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| Yibai Science & Technology (Shenzhen) Co., Limited | Private company limited by shares | Live |
| YIBANG SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HK YICHENG SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA YIJING SCIENCE RESEARCH LIMITED | Private company limited by shares | Live |
| YIMING SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| HK YIRAN SCIENCE CO., LIMITED | | Live |
| YONGXIN DEDIAN SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| YOUSENLANG SCIENCE AND TECHNOLOGY HONGKONG CO., LIMITED | Private company limited by shares | Live |
| CHINA INTERNATIONAL YOUTH SCIENCE AND CULTURE ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| World Youth Science and Technology Education Association Limited | | Live |
| KE YUAN SCIENCE LIMITED | Private company limited by shares | Dissolved |
| YUAN SCIENCE APPARATUS (H.K) LIMITED | Private company limited by shares | Dissolved |
| Su Yuan Science And Technology Co., Limited | Private company limited by shares | Live |
| Fang Yuan Standardization Science & Technology Limited | Private company limited by shares | Live |
| TSINGHUA YUAN SCIENCE & TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| YUANJIA SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Yuanxin TDK Science (HK) Technology Limited | Private company limited by shares | Live |
| YUJIE (HK) ENVIRONMENT PROTECTION SCIENCE & TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK YULIN SCIENCE AND TECHNOLOGY SHARE LIMITED | Private company limited by shares | Live |
| ShenZhen Yuncheng Science And Technology Limited | Private company limited by shares | Live |
| YUNDUAN BEAUTY SCIENCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK YUTINGFANG SCIENCE AND TECHNOLOGY OPEN UP GROUP LIMITED | Private company limited by shares | Dissolved |
| YUYANG SCIENCE TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| ZERO ONE SCIENCE TRADE LIMITED | Private company limited by shares | Live |
| ZETA SCIENCE LIMITED | Private company limited by shares | Live |
| ZEYUAN SCIENCE GROUP LIMITED | Private company limited by shares | Live |
| HK. ZHAOSHEN SCIENCE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Zhejiang Kuvag Electric Science Co., Limited | Private company limited by shares | Live |
| Zheng Tai Science and Technology Limited | Private company limited by shares | Live |
| Zheng Cheng Science And Technology Company Limited | Private company limited by shares | Live |
| ZhengQi(HK) Science & Technology Co., Limited | Private company limited by shares | Live |
| ZHENGXIN SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Zhenjiang (International) Science and Trade Development Limited | Private company limited by shares | Live |
| ZHIGOU Internet Science Co., Limited | Private company limited by shares | Dissolved |
| Zhihe Science And Technology Limited | Private company limited by shares | Live |
| ZHIYUAN SCIENCE & TECHNOLOGY (HK) LIMITED | Private company limited by shares | Dissolved |
| ZHONG AN INTERNATIONAL SCIENCE INSTITUTE LIMITED | Private company limited by shares | Live |
| ZHONGHUA CULTURAL HERITAGE SCIENCE APPRAISAL LIMITED | Private company limited by shares | Live |
| ShenZhen ZhongJiaXun Science& Technology Co., Limited | Private company limited by shares | Live |
| Zhongrun Science and Technology Limited | Private company limited by shares | Live |
| ZHONGYING SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Zhongyuan Science Technology Co., Limited | Private company limited by shares | Live |
| ZONGZE SCIENCE LIMITED | Private company limited by shares | Live |
| Science&Aesthetic Limited | Private company limited by shares | Live |
| SciencEasy Limited | Private company limited by shares | Live |
| ScienceCare Limited | Private company limited by shares | Dissolved |
| SCIENCEDN LIMITED | Private company limited by shares | Live |
| CHINESE SCIENCE-EDUCATION FILM CULTURE DISSEMINATION LIMITED | Private company limited by shares | Live |
| VIC SCIENCE&EDUCATION GROUP LIMITED | Private company limited by shares | Live |
| SCIENCEMALL LIMITED | Private company limited by shares | Live |
| SCIENCEPHARMA LIMITED | Private company limited by shares | Live |
| SciencePool Limited | Private company limited by shares | Live |
| AMK SCIENCES LIMITED | Private company limited by shares | Live |
| OM SCIENCES COMPANY LIMITED | Private company limited by shares | Live |
| Chinese Top Healthcare Academy Of Sciences Limited | Private company limited by shares | Live |
| GLOBAL NOBEL ACADEMY FOR FUTURE SCIENCES LIMITED | | Live |
| Genetic research academy of sciences co., Limited | | Live |
| HONG KONG ACADEMY OF SCIENCES CO., LIMITED | Private company limited by shares | Live |
| HONG KONG ACADEMY OF ENGINEERING SCIENCES | Company limited by guarantee | Live |
| HONG KONG ACADEMY OF FINANCIAL SCIENCES LIMITED | Private company limited by shares | Live |