| Zahir Science & Technology Investments (HK) Limited | | Live |
| Zenith & Van Science and Technology Company Limited | Private company limited by shares | Live |
| Zeno Science and Technology Limited | Private company limited by shares | Live |
| SHENZHEN ZEPPELIN SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HK ZHICHENG SCIENCE AND TECHNOLOGY ILLUMINATION LIMITED | Private company limited by shares | Live |
| ZHIYOU SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ZHONGANDA SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Zhongcheng Science and Technology Limited | Private company limited by shares | Live |
| ZHONGDINGHUATAI SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ZHONGJI UNITE SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ZHONGJINCHUANGRONG SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ZHONGRONGJVXIN SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ZHONGYAN SCIENCE AND TECHNOLOGY CO., LIMITED | | Live |
| TECH-RICH SCIENCE (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| TECOM SCIENCE (HONGKONG) LIMITED | Private company limited by shares | Live |
| Tengda Science And Technology Co., Limited | Private company limited by shares | Live |
| TENGSHENG SCIENCE & TRADE LIMITED | Private company limited by shares | Live |
| Testo Science Limited | | Live |
| TEWANG SCIENCE & TECHNOLOGY HK COMPANY LIMITED | Private company limited by shares | Dissolved |
| THERAPY SCIENCE LIMITED | Private company limited by shares | Live |
| Thinmed Science (HK) Limited | Private company limited by shares | Live |
| HARMONY THREE-DIMENSIONAL SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| BEAUTY THRU SCIENCE LIMITED | Private company limited by shares | Dissolved |
| TIANBOYA SCIENCE AND TRADE LIMITED | Private company limited by shares | Dissolved |
| TianXi Science & Technology Company Limited | Private company limited by shares | Live |
| GUANGDONG FOSHAN TIANYUAN SCIENCE AND TECHNOLOGY CERAMICS LIMITED | Private company limited by shares | Live |
| TIDESTONE SCIENCE AND TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Scigene Time Science And Technology Limited | Private company limited by shares | Live |
| TITAN SCIENCE AND TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| HK LIAOYOU TOEC SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TOMORROW'S SCIENCE TODAY, LIMITED | Private company limited by shares | Dissolved |
| TONGGONG XIECHENG SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ZOE SCIENCE TRADE LIMITED | Private company limited by shares | Live |
| Science World Trade Co., Limited | | Live |
| ZHITU SCIENCE AND TRADE CO., LIMITED | Private company limited by shares | Live |
| Elite Science International Trade Limited | Private company limited by shares | Live |
| HK East Grand Medicine Science Technology Trade Limited | Private company limited by shares | Live |
| OSEN Science Trade Limited | Private company limited by shares | Live |
| HK FRODA SCIENCE AND TECHNOLOGY TRADE CO., LIMITED | Private company limited by shares | Live |
| LUSTER SCIENCE AND TECHNOLOGY TRADE LIMITED | Private company limited by shares | Live |
| BIO YUNG TRADE SCIENCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK Victor Science & Trade Co. Limited | Private company limited by shares | Live |
| MEI YA SCIENCE TRADING LIMITED | | Live |
| Yi Cheng Science & Trading Limited | Private company limited by shares | Live |
| AKA Science Trading Co., Limited | Private company limited by shares | Live |
| EAST SCIENCE GROUP TRADING LIMITED | Private company limited by shares | Live |
| TIANJI ELECTRONIC SCIENCE TRADING CO., LIMITED | Private company limited by shares | Live |
| HK NB1-TECH SCIENCE INT'L TRADING LIMITED | Private company limited by shares | Live |
| TOP WAY SCIENCE & TECHNOLOGY TRADING CO., LIMITED | Private company limited by shares | Live |
| Brooks Science and Technology Trading Service Company Limited | | Live |
| HEALTH TREASURE SCIENCE LIMITED | Private company limited by shares | Live |
| Science Treasure Technology Co., Limited | Private company limited by shares | Live |
| Solar Trinity Science Limited | | Live |
| TRUMP SCIENCE COMPANY LIMITED | Private company limited by shares | Live |
| Technology, Science & Innovation (TSI) Partners Limited | Private company limited by shares | Live |
| Terran Science &Technology (T.S.T.) Limited | Private company limited by shares | Live |
| Uni-Bio Science Healthcare Limited | Private company limited by shares | Live |
| UNIONER SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SHANGHAI UNIQUE SCIENCE CO., LIMITED | Private company limited by shares | Live |
| UNIQUE SCIENCE & TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| Unis (HK) Science and Technology Trading Limited | Private company limited by shares | Live |
| UNITED CAUSE SCIENCE & TRADE LIMITED | Private company limited by shares | Live |
| United Science International Co., Limited | Private company limited by shares | Live |
| FNT UNITED SCIENCE INTERNATIONAL CORP LIMITED | Private company limited by shares | Dissolved |
| UNITED SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| United Science and Technology Limited | Private company limited by shares | Live |
| UNITED RESOURCES TECHNOLOGY & SCIENCE LIMITED | Private company limited by shares | Live |
| UNIVERSAL SCIENCE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL COMPUTER SCIENCE LIMITED | Private company limited by shares | Dissolved |
| FEELING UNIVERSAL LIFE SCIENCE LIMITED | | Live |
| Universal Science Management Limited | Private company limited by shares | Live |
| TAI CHI UNIVERSAL NEW SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Universky Science Leading Limited | Private company limited by shares | Live |
| UTPVIDEO SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| VALEX SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| China Science Valley Group Co., Limited | Private company limited by shares | Live |
| ANTIAGING VANGUARD SYSTEM SCIENCE & TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| China Lavender Vanilla Science and Technology Limited | Private company limited by shares | Live |
| Vastlink Materials Science & Technology Co., Limited | Private company limited by shares | Live |
| Germany Vaytinn Science And Technology Limited | Private company limited by shares | Live |
| VEGA SCIENCE & TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| VENTRUS BIOLMEDICAL SCIENCE LIMITED | Private company limited by shares | Dissolved |
| SUPER VENUS SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Vetmaster Science And Technology Group Corporation Limited | | Live |
| V-GO SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Vida Health Science Limited | | Live |
| VIKI SCIENCE CO., LIMITED | Private company limited by shares | Live |
| Vita Science & Technology Co., Limited | Private company limited by shares | Live |
| SCIENCE VITAL BIOTECHNOLOGY BRANCH LIMITED | Private company limited by shares | Live |
| SCIENCE VITAL BIO TECHNOLOGY LIMITED | Private company limited by shares | Live |
| VITAMIN SCIENCE LIMITED | Private company limited by shares | Dissolved |
| VitaPure Science Limited | | Live |
| Vittoria Health Science And Technology Company Limited | Private company limited by shares | Live |
| V-Shangs Science and Technology (H.K.) Co., Limited | Private company limited by shares | Live |
| Walron Science & Technology Co., Limited | Private company limited by shares | Live |
| USA WALTON AGRICULTURAL SCIENCE AND TECHNOLOGY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WANDA SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WANTARCA SCIENCE & TECHNOLOGY CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| WATSON SCIENCE PUBLISHERS LIMITED | Private company limited by shares | Live |
| HK WEICHUANG SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |