| Instra Investments Limited | Private company limited by shares | Live |
| Instrade Company Limited | Private company limited by shares | Live |
| MYWAY INSTRIAL CO., LIMITED | Private company limited by shares | Live |
| INSTROMET CHINA CO., LIMITED | Private company limited by shares | Dissolved |
| INSTRONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| INSTRONG INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| INSTRUCTIONAL DESIGN TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| INSTRUCTIONAL SYSTEMS LIMITED | Private company limited by shares | Live Commenced dormancy on 14-Apr-2014 |
| Instructor Limited | Private company limited by shares | Live |
| China Systemic Constellations Instructor Association Limited | Private company limited by shares | Live |
| KOWLOON MOTOR DRIVING INSTRUCTORS' ASSOCIATION LIMITED | Company limited by guarantee | Live |
| CANOE INSTRUCTORS LIMITED - THE - | Private company limited by shares | Dissolved |
| ASSOCIATION OF FORKTRUCK INSTRUCTORS LIMITED | Company limited by guarantee | Dissolved |
| SF INSTRUEMNT CO., LIMITED | Private company limited by shares | Live |
| INSTRUMAN INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| Instrumatic Hkong Corporation Limited | Private company limited by shares | Live |
| LE CEL INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| IRK INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| A & P INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| AME INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| M & Q INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| A & V INSTRUMENT LIMITED | Private company limited by shares | Live |
| GAO KE INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| GYG INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| ATM INSTRUMENT LIMITED | Private company limited by shares | Live |
| DSC INSTRUMENT LIMITED | Private company limited by shares | Live |
| TH INSTRUMENT LIMITED | Private company limited by shares | Live |
| NIC INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| TJA INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| GD INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| MK INSTRUMENT LIMITED | Private company limited by shares | Live |
| KNS INSTRUMENT LIMITED | Private company limited by shares | Live |
| GDK Instrument Limited | Private company limited by shares | Live |
| NEX Instrument Limited | Private company limited by shares | Live |
| KMS INSTRUMENT COMPANY LIMITED | | Live |
| MSI INSTRUMENT LIMITED | | Live |
| Acouway Music Instrument Co., Limited | Private company limited by shares | Live |
| ADVAN-TECH INSTRUMENT & EQUIPMENT CO. LIMITED | Private company limited by shares | Dissolved |
| AIRCRAFT INSTRUMENT AND ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| AIRCRAFT INSTRUMENT AND ELECTRONICS (HK) LIMITED | Private company limited by shares | Live |
| ALISON INSTRUMENT (HONGKONG) CO. LIMITED | Private company limited by shares | Live |
| U.S. ALLIANCE INSTRUMENT LIMITED | Private company limited by shares | Live |
| NANJING AMADA INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| AMERICA ABE INSTRUMENT LIMITED | Private company limited by shares | Live |
| AMERICA BESTMETER INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| AMERICA FILBEN INSTRUMENT (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| AMERICA INSTRUMENT (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| Tibetan Antelope Scientific Instrument Limited | Private company limited by shares | Live |
| JL (ASIA) INSTRUMENT LIMITED | Private company limited by shares | Live |
| DENVER INSTRUMENT COMPANY ASIA LIMITED | Private company limited by shares | Dissolved |
| A-TOP MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| China Xilian Automation Instrument Group Company Limited | Private company limited by shares | Live |
| Baidi Musical Instrument Co., Limited | | Live |
| BAIYI INSTRUMENT EQUIPMENT (HK) CO., LIMITED | Private company limited by shares | Live |
| Bang Instrument Company Limited | Private company limited by shares | Live |
| GERMANY BAOLI MUSICAL INSTRUMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| RELIVE BEAUTY & INSTRUMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 02-Oct-2013 |
| BERLIN INSTRUMENT (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| Best Instrument Company Limited | Private company limited by shares | Dissolved |
| HK BESTON MUSICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| BETA INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| BE-WIN INSTRUMENT TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Live |
| GERMANY BOWALT ELECTRIC INSTRUMENT GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| BROADFIELD INSTRUMENT LIMITED | Private company limited by shares | Live |
| BUDAPEST SUCCESS MEDICAL INSTRUMENT TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CABRUI INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |
| Germany Cadon Instrument (Hong Kong) Limited | Private company limited by shares | Live |
| CALTEK INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| CARDIOTECH INSTRUMENT LIMITED | Private company limited by shares | Live |
| Godilan Catalyst Instrument Limited | Private company limited by shares | Live |
| CENTER INSTRUMENT LIMITED | Private company limited by shares | Live |
| YI-C CHECK INSTRUMENT (HONGKONG) LIMITED | Private company limited by shares | Live |
| H.F CHEM INSTRUMENT LIMITED | Private company limited by shares | Live |
| CHEMLAB INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| SUN CHEONG PRECISION INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| FISHMAN INSTRUMENT (CHINA) LIMITED | Private company limited by shares | Live |
| CHINA INSTRUMENT GROUP LIMITED | Private company limited by shares | Live |
| MONITOR INSTRUMENT (CHINA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| China Precision Instrument Limited | Private company limited by shares | Live |
| Renhe Scientific Instrument (China) Co., Limited | Private company limited by shares | Live |
| WINTOP SCIENTIFIC INSTRUMENT (CHINA) LIMITED | Private company limited by shares | Live |
| CHINO INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| Chisin Instrument Limited | | Live |
| SHAN CHUAN MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| Jie Chuang Instrument Limited | Private company limited by shares | Live |
| CINDERELLA MUSICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| CLINICO INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| NEW ERA INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| NEW SKY INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| QI MEI INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| EVA Lab Instrument Co., Limited | Private company limited by shares | Dissolved |
| VU INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| W&J INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| UG INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| GA INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| HAC INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| QT INSTRUMENT HK CO., LIMITED | | Live |
| ANZEN MACHINERY INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| BALLAST TIME INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| BEIFANG INSTRUMENT CO., LIMITED | Private company limited by shares | Live |