| WEI KEN CIRCUIT COMPANY LIMITED | Private company limited by shares | Dissolved |
| CIRCUIT LIMITED | Private company limited by shares | Live |
| HUA FEI CIRCUIT COMPANY LIMITED | Private company limited by shares | Live |
| GS CIRCUIT COMPANY LIMITED | Private company limited by shares | Dissolved |
| FLY CIRCUIT COMPANY LIMITED | Private company limited by shares | Live |
| RSR CIRCUIT COMPANY LIMITED | Private company limited by shares | Live |
| GK CIRCUIT LIMITED | Private company limited by shares | Live |
| I CIRCUIT HK LIMITED | Private company limited by shares | Live |
| ACM CIRCUIT LIMITED | Private company limited by shares | Live |
| TDF CIRCUIT LIMITED | Private company limited by shares | Live |
| YS CIRCUIT LIMITED | | Live |
| Acme Circuit Company Limited | Private company limited by shares | Live |
| ADVANCED CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| Best Circuit Limited | Private company limited by shares | Live |
| C-FLEX CIRCUIT LIMITED | Private company limited by shares | Live |
| CINA-TECH CIRCUIT LIMITED | Private company limited by shares | Live |
| U A CINEMA CIRCUIT LIMITED | Private company limited by shares | Live |
| Guang Cheng da Circuit (HK) Co., Limited | Private company limited by shares | Live |
| KEMI INTEGRATION CIRCUIT (HK) CO., LIMITED | Private company limited by shares | Live |
| EASTECH PRINTED CIRCUIT BOARD CO., LIMITED | Private company limited by shares | Dissolved |
| SURPASS PRINTED CIRCUIT BOARD CO., LIMITED | Private company limited by shares | Live |
| Crisko Circuit Limited | Private company limited by shares | Dissolved |
| DICKSON CIRCUIT LIMITED | Private company limited by shares | Live |
| FLYTOP CIRCUIT LIMITED | Private company limited by shares | Live |
| GOLD CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| GRAND CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| HITECH CIRCUIT COMPANY LIMITED | Private company limited by shares | Live |
| HI-TEK CIRCUIT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hobson Circuit HK Limited | Private company limited by shares | Live |
| Champion Asia Circuit (Hong Kong) Limited | Private company limited by shares | Live |
| Huagao Shortcut Electric Circuit (HK) Limited | Private company limited by shares | Live |
| ISEE INTEGRATED CIRCUIT LIMITED | Private company limited by shares | Live |
| More Just Circuit Limited | Private company limited by shares | Live |
| KINGFORD CIRCUIT BOARD LIMITED | Private company limited by shares | Dissolved |
| HK MULONG CIRCUIT LIMITED | Private company limited by shares | Live |
| Pacific Circuit Limited | Private company limited by shares | Live |
| Power Circuit HK Limited | | Live |
| ADVANCED PRINTED CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| Fast Printed Circuit Board LIMITED | Private company limited by shares | Live |
| KALEX PRINTED CIRCUIT BOARD LIMITED | Private company limited by shares | Dissolved |
| PARKLANE PRINTED CIRCUIT BOARD LIMITED | Private company limited by shares | Live |
| NEW POWER PRINTED CIRCUIT BOARD COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAIKONG PRINTED CIRCUIT BOARD LIMITED | Private company limited by shares | Dissolved |
| RICH CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| HQT CIRCUIT (SHENZHEN) LIMITED | Private company limited by shares | Live |
| UVD THEATRE CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| VIOLET CIRCUIT LIMITED | Private company limited by shares | Live |
| WONDER CIRCUIT LIMITED | Private company limited by shares | Dissolved |
| CIRCUIT-CHIP INDUSTRIES LIMITED | Private company limited by shares | Live |
| CIRCUITEC LIMITED | Private company limited by shares | Dissolved |
| CIRCUITECH LIMITED | Private company limited by shares | Live |
| CIRCUITECH INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| CIRCUITEK LIMITED | Private company limited by shares | Live |
| CIRCUITEK INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| CIRCUITONE LIMITED | Private company limited by shares | Live |
| Circuitprint Electronics Limited | Private company limited by shares | Dissolved |
| CIRCUITRAX COMPANY LIMITED | Private company limited by shares | Live |
| CIRCUITRONIC LIMITED | Private company limited by shares | Dissolved |
| CIRCUITRONIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CIRCUITRONIX (HONG KONG) LIMITED | Private company limited by shares | Live |
| HT CIRCUITS LIMITED | Private company limited by shares | Live |
| YUE WAH CIRCUITS COMPANY LIMITED | Private company limited by shares | Live |
| UNI CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| LPC CIRCUITS LIMITED | Private company limited by shares | Live |
| JF CIRCUITS LIMITED | Private company limited by shares | Live |
| Q & D CIRCUITS COMPANY LIMITED | Private company limited by shares | Live |
| JS CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| RS CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| RON CIRCUITS LIMITED | Private company limited by shares | Live |
| FCF CIRCUITS LIMITED | Private company limited by shares | Live |
| ZZH CIRCUITS LIMITED | Private company limited by shares | Live |
| Max Circuits Limited | Private company limited by shares | Live |
| C & T CIRCUITS LIMITED | Private company limited by shares | Live |
| WMD CIRCUITS LIMITED | Private company limited by shares | Live |
| AMS Circuits Company Limited | Private company limited by shares | Live |
| LDJ Circuits Company Limited | Private company limited by shares | Live |
| ST Circuits Company Limited | Private company limited by shares | Live |
| Key Circuits Limited | Private company limited by shares | Live |
| ABIS CIRCUITS CO., LIMITED | Private company limited by shares | Live |
| ABIS CIRCUITS (HK) CO., LIMITED | Private company limited by shares | Live |
| ALLIED PRINTED CIRCUITS HK LIMITED | Private company limited by shares | Live |
| ALPHA CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| Altersprint Circuits Limited | Private company limited by shares | Live |
| ANDWIN CIRCUITS CO., LIMITED | Private company limited by shares | Live |
| ARCHER CIRCUITS LIMITED | Private company limited by shares | Live |
| ARTNITEX CIRCUITS MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| ELECTRONIC CIRCUITS & ASSEMBLY COMPANY LIMITED | Private company limited by shares | Live |
| AVID CIRCUITS CO., LIMITED | Private company limited by shares | Live |
| BASIC CIRCUITS COMPANY LIMITED | Private company limited by shares | Dissolved |
| BESTECH CIRCUITS (HK) LIMITED | Private company limited by shares | Live |
| Bestwell circuits Limited | Private company limited by shares | Live |
| HING KEUNG PRINTED CIRCUITS BOARD LIMITED | Private company limited by shares | Live |
| KINGVIEW CIRCUITS BOARD LIMITED | Private company limited by shares | Live |
| WELFARE PRINTED CIRCUITS BOARD COMPANY LIMITED | Private company limited by shares | Live |
| TEAMPOWER CIRCUITS BOARD LIMITED | Private company limited by shares | Live |
| ONPRESS PRINTED CIRCUITS BOARDS LIMITED | Private company limited by shares | Live |
| Bozee Circuits Co., Limited | Private company limited by shares | Live |
| BRAIN POWER CIRCUITS CO., LIMITED | Private company limited by shares | Live |
| Bright Circuits Co., Limited | Private company limited by shares | Live |
| DRAGON BRIGHT CIRCUITS LIMITED | Private company limited by shares | Live |