| Xintengyi Science and Education Limited | Private company limited by shares | Live |
| XuanYue Science & Education (HK) Co., Limited | Private company limited by shares | Live |
| CHINA EDUCATIONAL SCIENCE RESEARCH LIMITED | Private company limited by shares | Dissolved |
| TONGYUYUN EDUCATIONAL SCIENCE LIMITED | Private company limited by shares | Live |
| EFTEC SCIENCE LIMITED | Private company limited by shares | Live |
| EGOWOW NETWORK SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| Elan Science & Technology (HK) Co., Limited | Private company limited by shares | Live |
| LGO SCIENCE &TECH ELEC LIMITED | Private company limited by shares | Live |
| HK PHIBURT ELECTRON SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| QXD ELECTRON SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| AKA ELECTRON SCIENCE & TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| YI JIE ELECTRON SCIENCE AND TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SCIENCE ELECTRONIC (HK) CO., LIMITED | Private company limited by shares | Live |
| GLOW SCIENCE ELECTRONIC LIMITED | Private company limited by shares | Live |
| JUCHEN ELECTRONICS SCIENCE CO., LIMITED | Private company limited by shares | Live |
| East Electronics Science HongKong Co., Limited | Private company limited by shares | Live |
| GATHER ELECTRONICS SCIENCE (H.K.) CO., LIMITED | Private company limited by shares | Live |
| GPUSI ELECTRONICS SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HQT ELECTRONICS SCIENCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ITEC ELECTRONICS SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| ELEMENTS SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| EMIS (HONG KONG) SCIENCE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| EMPIRE SCIENCE & TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| EMPIRE KONG SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CHINA SCIENCE NEW ENERGY TECH LIMITED | Private company limited by shares | Live |
| China New Energy Science and Technology Group LIMITED | Private company limited by shares | Live |
| SCIENCE AND ENERGY (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| AIPU HEAT ENERGY SCIENCE (HK) DEV. LIMITED | Private company limited by shares | Dissolved |
| GERMANY NEW DAY NEW & ENERGY SCIENCE AND TECHNOLOGY GROUP LIMITED | Private company limited by shares | Dissolved |
| ENERGY SCIENCE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Richtech Offshore Energy Science Company Limited | Private company limited by shares | Live |
| UV Energy Science & Technology Co. Limited | Private company limited by shares | Live |
| CQH NEW ENERGY SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HOC ENERGY SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| USA NEW ENERGY SCIENCE AND TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| KESHENGTE NEW ENERGY SCIENCE TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| GENESIS ENERGY SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| WESTERN ENERGY SCIENCE & TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| YUEHAI ENERGY SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| GERMANY PHNLLIS THERMAL ENERGY SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK Yipu New Energy Science and Technology Limited | | Live |
| YOUFANG NEW ENERGY SCIENCE TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| Engineering Science Limited | Private company limited by shares | Live |
| SCIENCE AND ENGINEERING RESEARCH CENTER LIMITED | Private company limited by shares | Live |
| Groundwater Science and Engineering Limited | Private company limited by shares | Live |
| SCIENCE RESEARCH MACHINERY ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Science & Engineering Research Limited | Private company limited by shares | Live |
| NGOs Science Trading & Engineering Consultant Company Limited | Private company limited by shares | Live |
| Enlace Science Limited | | Live |
| USA ENRUITE CROP SCIENCE LIMITED | Private company limited by shares | Dissolved |
| USA ENRUITE CROP SCIENCE LIMITED | Private company limited by shares | Live |
| SCIENCE (HK) ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| ALTON SCIENCE ENTERPRISES LIMITED | Private company limited by shares | Live |
| HK Ecological Environment Protection Science and Technology Association Limited | Private company limited by shares | Live |
| Hong Kong Environmental Science & Technology Co. Limited | | Live |
| GRAND LIVE ENVIRONMENTAL SCIENCE CO. LIMITED | Private company limited by shares | Live |
| HONGKONG MILLER ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| MING HUA ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Resume Environmental Science and Technology Co., Limited | Private company limited by shares | Live |
| Yuen Yuen Environmental Science And Technology Co. Limited | Private company limited by shares | Live |
| Guangdong ErJi Science And Innovation Co., Limited | Private company limited by shares | Live |
| E-SECURITY SCIENCE LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ESSENCE SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| SCIENCE ESTHETIC SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| eSYSTEM SCIENCE LIMITED | Private company limited by shares | Live |
| Eureka Science Limited | Private company limited by shares | Live |
| EUROAM SCIENCE & TECHNOLOGY (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| EUROASIAN SYSTEM SCIENCE RESEARCH ASSOCIATION LIMITED | Private company limited by shares | Live |
| EVER SCIENCE LIMITED | Private company limited by shares | Live |
| Everthrive Science And Technology Limited | Private company limited by shares | Live |
| EXCELLENT SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| PKU SCIENCE & CULTURE EXCHANGE LIMITED | Private company limited by shares | Dissolved |
| SCIENCE EXPRESS LIMITED | Private company limited by shares | Dissolved |
| FASTSTAR SCIENCE & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Feida Science Co., Limited | | Live |
| FEIMI SCIENCE LIMITED | Private company limited by shares | Live |
| FEIYI SCIENCE E-COMMERCE CO., LIMITED | Private company limited by shares | Live |
| FENG MAO SCIENCE CO., LIMITED | Private company limited by shares | Live |
| Feng Mao Science Hongkong Co., Limited | Private company limited by shares | Live |
| Feng Xinquan Science and Trade Co., Limited | Private company limited by shares | Live |
| HONG KONG FLEET ELECTRONIC SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| FLOW SCIENCE LIMITED | Private company limited by shares | Dissolved |
| May Flower Science Limited | | Live |
| FLYWOR SCIENCE CO., LIMITED | Private company limited by shares | Live |
| SCIENCE FOCUS LIMITED | Private company limited by shares | Live |
| FOCUS SCIENCE INSTRUMENTS (HK) LIMITED | Private company limited by shares | Dissolved |
| FOCUS SCIENCE INSTRUMENTS (HK) LIMITED | Private company limited by shares | Live |
| SCIENCE & HEALTH (HONGKONG) FOODSTUFF LIMITED | Private company limited by shares | Live |
| FOREFRONT SCIENCE AND TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| Tao Shu Kui Forensic Science Identification Limited | Private company limited by shares | Live |
| Forever Standard Science Co., Limited | Private company limited by shares | Live |
| Forever Science and Technology (Hong Kong) Limited | Private company limited by shares | Dissolved |
| GBA Science Forum Company Limited | | Live |
| GUANGDONG FOSHAN DATANG MINGZHU SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA ART & SOCIAL SCIENCE FOUNDATION LIMITED | Company limited by guarantee | Dissolved |
| EAST ASIAN HISTORY OF SCIENCE FOUNDATION LIMITED | Company limited by guarantee | Live |
| HAN MING EDUCATION & SCIENCE FOUNDATION LIMITED | Private company limited by shares | Live |
| HONG KONG FRAGRANT SCIENCE AND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| FuChen (HK) Science and Technology Limited | Private company limited by shares | Live |
| FULAI BIOLOGY SCIENCE AND TECHNOLOGY CO., LIMITED | | Live |