| Sanwood Instrument (HK) Co., Limited | Private company limited by shares | Live |
| B&W Scientific Instrument Co., Limited | Private company limited by shares | Live |
| Bit Scientific Instrument Co., Limited | Private company limited by shares | Live |
| YK SCIENTIFIC INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| ALL ONE SCIENTIFIC INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| JX Scientific Instrument Co., Limited | Private company limited by shares | Live |
| Nano Scientific Instrument (HK) Co., Limited | Private company limited by shares | Dissolved |
| Re-Shine Scientific Instrument Co., Limited | Private company limited by shares | Live |
| ZHELIN SCIENTIFIC INSTRUMENT (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| SUPERTESTING INSTRUMENT CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 03-Jul-2013 |
| Surpass Instrument Co., Limited | Private company limited by shares | Live |
| MEASUREMENT INSTRUMENT SYSTEMS CO., LIMITED | Private company limited by shares | Live |
| SZSMED Instrument Co., Limited | Private company limited by shares | Live |
| TaiLi Instrument Co., Limited | Private company limited by shares | Live |
| TD&T INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| TITLE INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| Chongqing TOPECH Instrument Co., Limited | Private company limited by shares | Live |
| HK TSDY INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| VITAIMED INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| V-RAY Instrument (Hongkong) Co., Limited | | Live |
| WINTOP SCIENTIFIC INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| XINYA INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| HK DL AIR CONDITIONING INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| Connexant Instrument Limited | Private company limited by shares | Live |
| AZ INSTRUMENT CORP. LIMITED | Private company limited by shares | Live |
| Techik Instrument (HongKong) Corporation Limited | Private company limited by shares | Live |
| Creative Instrument Limited | Private company limited by shares | Live |
| CRECRE INSTRUMENT (HONGKONG) LIMITED | Private company limited by shares | Live |
| DALIAN HONESTAR INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| Denshiny Medical Instrument Co., Limited | Private company limited by shares | Live |
| CHINA DENTAL MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| DOMINO SCIENTIFIC INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| Dono Instrument Limited | Private company limited by shares | Live |
| EAST C Instrument Limited | Private company limited by shares | Live |
| HANMEI ECOLOGY INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| Ednis Instrument Co., Limited | Private company limited by shares | Live |
| CHINA EDUCATION INSTRUMENT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CHINA EDUCATIONAL INSTRUMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| Shenzhen Ceyuan Electronic Instrument Co., Limited | | Live |
| JR ELECTRONIC INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| CENTURY ELECTRONIC INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| PHOTONLUM ELECTRONIC INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| CHINA ELECTRONICS INSTRUMENT GROUP CO., LIMITED | Private company limited by shares | Live |
| ZHONGKE INSTRUMENT ELECTRONICS (HK) CO., LIMITED | Private company limited by shares | Live |
| HK TORETEN ELECTRONICS INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| TORRY ELECTRONICS INSTRUMENT (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| PRE ELECTRONIE INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| CHONGQING NEW ENERGY INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| JJW Electric And Instrument Engineering Limited | Private company limited by shares | Live |
| Green Sense Instrument Engineering Co., Limited | Private company limited by shares | Live |
| VBC INSTRUMENT ENGINEERING (HK) LIMITED | Private company limited by shares | Live |
| EVERTESTER INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| EVERTESTER INSTRUMENT AND METER CO., LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI FANGYI AUTOMATION & INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| FARBELL INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| HUA FENG INSTRUMENT LIMITED | Private company limited by shares | Live |
| FIRSTEC INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Flourish Mechanical Instrument Limited | Private company limited by shares | Live |
| FOREVER HEALTH MEDICAL INSTRUMENT LIMITED | Private company limited by shares | Live |
| FORTUNE INSTRUMENT CO., LIMITED | | Live |
| FOTOMASTER INSTRUMENT & PHOTO FINISHING CO. LIMITED | Private company limited by shares | Dissolved |
| Fule Instrument Technology (Shanghai) Co., Limited | Private company limited by shares | Live |
| FUSION MUSICAL INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |
| FUYANG HENGFENG INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| SHENZHEN FUZER INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| GAOTONG INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| GECKO MUSICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| GELIN CNC INSTRUMENT LIMITED | Private company limited by shares | Live |
| HK Genuoya Instrument Trade Limited | Private company limited by shares | Live |
| GEOPHYSICS INSTRUMENT LIMITED | Private company limited by shares | Live |
| GERMANY E.F PRECISION INSTRUMENT INT'L LIMITED | Private company limited by shares | Dissolved |
| GERMANY XINDELONG INSTRUMENT LIMITED | Private company limited by shares | Live |
| GREAT WIN INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| GREAT TEAM INSTRUMENT (H.K.) LIMITED | Private company limited by shares | Live |
| Green Instrument Co., Limited | Private company limited by shares | Live |
| ABG INSTRUMENT GROUP CO., LIMITED | Private company limited by shares | Live |
| AAA Instrument Group Co., Limited | Private company limited by shares | Live |
| EJK INSTRUMENT GROUP CO., LIMITED | Private company limited by shares | Live |
| SK INSTRUMENT GROUP CO., LIMITED | Private company limited by shares | Live |
| INSTRUMENT GROUP CO., LIMITED | Private company limited by shares | Live |
| HK YADONG INSTRUMENT INT'L GROUP LIMITED | Private company limited by shares | Live |
| GUANGDONG ZHUJIANG INSTRUMENT HOLDING LIMITED | Private company limited by shares | Live |
| GUANGDONG ZHUJIANG INSTRUMENT METERING LIMITED | Private company limited by shares | Live |
| Guangzhou Mycool Instrument Co., Limited | Private company limited by shares | Live |
| GUANGZHOU NANYANG ELECTRICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| GUANGZHOU 9M MUSICAL INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| Haiming Scientific Instrument Co., Limited | Private company limited by shares | Live |
| HANGZHOU SUMER INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| HANGZHOU FUQIN INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| FRANCE HANKE INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| HAOAN INSTRUMENT (CHINA) CO., LIMITED | Private company limited by shares | Live |
| Hebikuo Musical Instrument International Co., Limited | Private company limited by shares | Live |
| Germany Heilanburg Musical Instrument Co., Limited | Private company limited by shares | Live |
| HENGQIAO INSTRUMENT LIMITED | Private company limited by shares | Live |
| HeShang Scientific Instrument (HK) Limited | Private company limited by shares | Live |
| HIGHEST INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| HITECH INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| HUI MEI INSTRUMENT (HK) LIMITED | Private company limited by shares | Dissolved |
| C & K INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |
| DERON INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |