| TECHWIN INSTRUMENTS (HK) CO., LIMITED | Private company limited by shares | Live |
| TOPOLOGY INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| UPTECH INSTRUMENTS CO., LIMITED | | Live |
| VIKKO INSTRUMENTS CO., LIMITED | | Live |
| Yolimed Instruments Co., Limited | Private company limited by shares | Live |
| Yuda Instruments Co., Limited | Private company limited by shares | Live |
| Zotek Instruments Co., Limited | Private company limited by shares | Live |
| Come Instruments (HongKong) Co., Limited | Private company limited by shares | Dissolved |
| Conre Scientific Instruments Co., Limited | Private company limited by shares | Live |
| CORELEX INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| CREATRONIC INSTRUMENTS (INTERNATIONAL) COMPANY LIMITED | Private company limited by shares | Dissolved |
| CROMPTON INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| Deephills Instruments Limited | | Live |
| Leident dental instruments co., Limited | Private company limited by shares | Dissolved |
| DIGITEK INSTRUMENTS COMPANY LIMITED | Private company limited by shares | Live |
| DIGITMEX INSTRUMENTS LIMITED | Private company limited by shares | Live |
| DRAGON INSTRUMENTS CO. LIMITED | Private company limited by shares | Dissolved |
| DYNAMIC INSTRUMENTS & ENGG CO., LIMITED | Private company limited by shares | Live |
| EASYSCI INSTRUMENTS COMPANY LIMITED | Private company limited by shares | Live |
| ELECTRA INSTRUMENTS, LIMITED | Private company limited by shares | Dissolved |
| TRIUMPH ELECTRICAL INSTRUMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOPS ELECTRICALS & INSTRUMENTS LIMITED | Private company limited by shares | Live |
| WELLS ELECTRICALS & INSTRUMENTS LIMITED | Private company limited by shares | Live |
| Inqi Electronic Instruments Co., Limited | Private company limited by shares | Live |
| Meilan Electronics Instruments (HK) Co., Limited | Private company limited by shares | Live |
| ELITE ELECTRONICS INSTRUMENTS LIMITED | Private company limited by shares | Live |
| TSINLIEN ELECTRONICS & INSTRUMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| GROUND ENGINEERING INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| Eria Instruments Limited | Private company limited by shares | Live |
| ETRAN INSTRUMENTS ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| EVER FAIR SCIENTIFIC INSTRUMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| RVR Instruments Import and Export Limited | Private company limited by shares | Live |
| EXTECH INSTRUMENTS HK LIMITED | Private company limited by shares | Live |
| FEIXIANG MUSICAL INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| FERMI INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| FESHANM MUSICAL INSTRUMENTS MANUFACTURING CO., LIMITED | Private company limited by shares | Live |
| FINE TUNED INSTRUMENTS LIMITED | Private company limited by shares | Live |
| FIRTEK INSTRUMENTS (CHINA) LIMITED | Private company limited by shares | Live |
| F.O.B. INSTRUMENTS LIMITED | Private company limited by shares | Live |
| FORTUNE INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| FUJITONE MUSICAL INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| GAEA INSTRUMENTS LIMITED | Private company limited by shares | Live |
| GANTNER INSTRUMENTS CHINA LIMITED | Private company limited by shares | Live |
| Grotrian-Steinweg (Braunschweig Germany) Musical Instruments Company Limited | Private company limited by shares | Live |
| Germany Desik Instruments Group Limited | Private company limited by shares | Live |
| Gflow Instruments Co., Limited | Private company limited by shares | Live |
| Global Scientific Instruments and Equipments Company Limited | Private company limited by shares | Live |
| GODA Instruments Limited | Private company limited by shares | Live |
| GODA INSTRUMENTS INTERNATIONAL CO., LIMITED | | Live |
| GOLAB INSTRUMENTS. CO ., LIMITED | Private company limited by shares | Live |
| Gold APP Instruments Corporation Limited | Private company limited by shares | Live |
| Grand Buy Instruments Company Limited | Private company limited by shares | Live |
| SHENZHEN GRAND MUSICAL INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| GRANDWIDE MEDICAL APPARATUS & INSTRUMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK Green Musical Instruments Limited | Private company limited by shares | Live |
| Greyline Instruments (China) Co., Limited | Private company limited by shares | Live |
| Greyline Measurement Instruments (China) Co., Limited | | Live |
| HT INSTRUMENTS GROUP CO., LIMITED | Private company limited by shares | Live |
| LABFREEZ INSTRUMENTS GROUP CO., LIMITED | Private company limited by shares | Live |
| EXPLOITPR INSTRUMENTS GROUP (HONGKONG) LIMITED | Private company limited by shares | Live |
| HK MEIDI BEAUTY INSTRUMENTS INT'L GROUP LIMITED | Private company limited by shares | Live |
| SPECTRUM INSTRUMENTS (GROUP) CO., LIMITED | Private company limited by shares | Live |
| GUANGZHOU OCAR MUSICAL INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| HAMEG INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| HK HETIAN MUSICAL INSTRUMENTS LIMITED | Private company limited by shares | Live |
| HighTop Medical Instruments Co., Limited | Private company limited by shares | Live |
| HI-TECH INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| LEO INSTRUMENTS (H.K.) LIMITED | Private company limited by shares | Live |
| KMY INSTRUMENTS (HK) LIMITED | Private company limited by shares | Dissolved |
| RST INSTRUMENTS (HK) LIMITED | Private company limited by shares | Live |
| B M H INSTRUMENTS (HK) COMPANY LIMITED | Private company limited by shares | Live |
| ABB INSTRUMENTS (HK) LIMITED | Private company limited by shares | Live |
| DAXING INSTRUMENTS (HK) LIMITED | Private company limited by shares | Live |
| Misa Digital Instruments (HK) Limited | Private company limited by shares | Dissolved |
| HONG KONG TM AUTOMATION INSTRUMENTS CO., LIMITED | Private company limited by shares | Dissolved |
| BANGSI SCIENTIFIC INSTRUMENTS HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| Bruker Scientific Instruments Hong Kong Co. Limited | Private company limited by shares | Live |
| HONG KONG SEN TUO HE CHUANG SCIENTIFIC INSTRUMENTS LIMITED | Private company limited by shares | Live |
| Common Instruments (Hong Kong) Co., Limited | Private company limited by shares | Live |
| Keren Instruments (Hong Kong) Co., Limited | Private company limited by shares | Live |
| HONG KONG EDS INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| Bwt instruments (Hong Kong) Co., Limited | Private company limited by shares | Live |
| HONG RUN PRECISION INSTRUMENTS CO., LIMITED | Private company limited by shares | Live |
| Scientific Instruments (Hong Kong) Co., Limited | Private company limited by shares | Live |
| CURTIS INSTRUMENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| FLYCHORD MUSICAL INSTRUMENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| GEOTECHNICAL INSTRUMENTS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Hitech Instruments Co., Limited | | Live |
| Huake Instruments (Hong Kong) Co., Limited | Private company limited by shares | Live |
| J.P. INSTRUMENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| OBT INSTRUMENTS (HONG KONG) COMPANY, LIMITED | Private company limited by shares | Dissolved |
| MKS INSTRUMENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| RUI DE INSTRUMENTS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| AI INSTRUMENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG INSTRUMENTS LIMITED | Private company limited by shares | Live |
| PCE Instruments Hong Kong Limited | Private company limited by shares | Live |
| KS Instruments Hong Kong Limited | Private company limited by shares | Live |
| CAD Instruments (Hong Kong) Limited | Private company limited by shares | Live |
| NEW CENTURY (HONG KONG) INSTRUMENTS LIMITED | Private company limited by shares | Live |