| HONGJI INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |
| HONGJI INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |
| JIACHEN INSTRUMENT (HK) LIMITED | Private company limited by shares | Live |
| KETAI INSTRUMENT (HK) COMPANY LIMITED | Private company limited by shares | Live |
| SCHARP INSTRUMENT (H.K) LIMITED | Private company limited by shares | Live |
| CF Instrument Accessories (Hong Kong) Limited | Private company limited by shares | Live |
| INSTRUMENT AGENCY HONG KONG LIMITED | Private company limited by shares | Live |
| POLYTECH INSTRUMENT (HONG KONG BRANCH) LIMITED | Private company limited by shares | Live |
| Brooks Instrument (Hong Kong) Limited | Private company limited by shares | Live |
| Hong Kong Central Instrument Limited | | Live |
| XIN KE HONG DA INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| HONG KONG WAN DAI BEAUTY INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| BIOEAGLE (HONG KONG) INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| COTTRELL INSTRUMENT (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| CREATECH INSTRUMENT (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Ecorete Instrument Co., Limited | | Live |
| HONG TAI INSTRUMENT (HK) CO., LIMITED | Private company limited by shares | Live |
| HOTECH (HONG KONG) INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| JU REN INSTRUMENT (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| HONG KONG ACE INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| HONG KONG SUO LIN MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HONG KONG AN BEI ER MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| YUI WAH PRECISION INSTRUMENT (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| TOMRAY (HONG KONG) INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Dexuanyuan Instrument Co., Limited | Private company limited by shares | Live |
| Fortune Instrument (Hong Kong) Co., Limited | Private company limited by shares | Live |
| FRIENDS INSTRUMENT (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| FUTURE INSTRUMENT (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Grand Internationnal Instrument Limited | Private company limited by shares | Live |
| GREEN INSTRUMENT (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| GROTRIAN-STEINWEG (HONG KONG) INSTRUMENT LIMITED | Private company limited by shares | Live |
| Hong Kong Hengmei Instrument Limited | Private company limited by shares | Live |
| JOINTY (HONG KONG) INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| JUNMIN SCIENTIFIC INSTRUMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| APK Instrument (Hong Kong) Co. Limited | Private company limited by shares | Live |
| TS Instrument (Hong Kong) Limited | Private company limited by shares | Live |
| GENERAL INSTRUMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| MASTER INSTRUMENT CORPORATION HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UTAKA ELECTRIC INSTRUMENT (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Wanchuan instrument equipment (Hong Kong) Limited | | Live |
| HONG KONG NEW SANS MEASURE INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| HONG KIN MEDICAL INSTRUMENT LIMITED | Private company limited by shares | Live |
| HONG KONG KSD MEDICAL INSTRUMENT LIMITED | Private company limited by shares | Live |
| HONG KONG TONG XIN MEDICAL INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| MINSTREL INSTRUMENT (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG FRITZ MUSICAL INSTRUMENT LIMITED | Private company limited by shares | Live |
| HONG KONG YIN HUANG MUSICAL INSTRUMENT LIMITED | Private company limited by shares | Live |
| KAM TAI (HONG KONG) MUSICAL INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| YA YUN (HONG KONG) MUSICAL INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG SINGER MUSICAL INSTRUMENT LIMITED | Private company limited by shares | Live |
| HONG KONG KEI XIN PRECISION INSTRUMENT LIMITED | Private company limited by shares | Live |
| HONG KONG RONG LI INSTRUMENT LIMITED | Private company limited by shares | Live |
| HONG KONG SCIENTIFIC INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Separations Instrument Co., Limited | Private company limited by shares | Live |
| Hong Kong Ya Song Medical Instrument Company Limited | Private company limited by shares | Live |
| HONG KONG SOUTH INSTRUMENT CO. LIMITED | Private company limited by shares | Live |
| HONG KONG XING DAO INSTRUMENT GAUGE LIMITED | Private company limited by shares | Live |
| HONG KONG YIDEHUA INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| Hong Kong YoungLine Instrument Co., Limited | Private company limited by shares | Live |
| Hong Kong Zhundian Testing Instrument Limited | Private company limited by shares | Live |
| Seasonic instrument (Hongkong) Co., Limited | Private company limited by shares | Live |
| HITECH INSTRUMENT (HONGKONG) LIMITED | Private company limited by shares | Live |
| Hoyang Instrument Limited | | Live |
| HUAKE INSTRUMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Huake Instrument Hk Co., Limited | Private company limited by shares | Live |
| HUAYANG MUSICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HUAYANG MUSICAL INSTRUMENT CORP. LIMITED | Private company limited by shares | Live |
| HUA-YEE INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| Hutchison Instrument & Equipment Company Limited | Private company limited by shares | Dissolved |
| Ideal Musical Instrument Co., Limited | Private company limited by shares | Dissolved |
| BJ INSTRUMENT IMP&EXP LIMITED | Private company limited by shares | Dissolved |
| LONGSOUND MUSICAL INSTRUMENT INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Goldgood Instrument (HK) Industry Limited | Private company limited by shares | Live |
| Intelligent Precision Instrument ( HongKong ) Co., Limited | Private company limited by shares | Live |
| InterLab Instrument Co., Limited | Private company limited by shares | Live |
| Iopto optic instrument (HK) Co., Limited | Private company limited by shares | Live |
| JIANGSU CREATIVE INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| JIANGSU KANGJIN MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| JINAN MINGQUAN WRITING INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| JINCHENG INSTRUMENT LIMITED | Private company limited by shares | Live |
| Dongguan Jing Yu Instrument Co., Limited | Private company limited by shares | Live |
| JINGGONG INSTRUMENT LIMITED | Private company limited by shares | Live |
| Jinkai Instrument (Hong Kong) Co., Limited | Private company limited by shares | Live |
| CHANGCHUN JUNCHENG OPTICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| JUNZE INSTRUMENT EQUIPMENT LIMITED | Private company limited by shares | Live |
| KALOON INSTRUMENT LIMITED | Private company limited by shares | Live |
| Kama Medical Instrument Co., Limited | Private company limited by shares | Live |
| KARNY INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| KEYI (HONG KONG) INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| KEYRAY INSTRUMENT COMPANY LIMITED | Private company limited by shares | Live |
| KINGSMARK INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| LABEX INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| LEADER INSTRUMENT LIMITED | Private company limited by shares | Live |
| Leaderwe Instrument Limited | Private company limited by shares | Live |
| Lexus Instrument Limited | Private company limited by shares | Live |
| BEST LIFE MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| LINKGOLD MEDICAL INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| Longsheng HK Instrument Limited | Private company limited by shares | Live |
| LONGTIAN INTELLECTUAL INSTRUMENT (HONGKONG) LIMITED | Private company limited by shares | Live |
| INDUSTRIAL INSTRUMENT AND MACHINERIES, LIMITED | Private company limited by shares | Dissolved |