| TAM'S ELECTRONIC CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| TEAM CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| SKY TECH CIRCUITS COMPANY LIMITED | Private company limited by shares | Live |
| Y T TECHNOLOGY CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ACME CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| AOLISI CIRCUITS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| BLUESKY CIRCUITS TECHNOLOGY HONGKONG CO., LIMITED | Private company limited by shares | Live |
| CENTURY CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Dynamic Circuits Technology Co. Limited | Private company limited by shares | Live |
| SUNKING CIRCUITS ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Greater Bay Area Circuits Technology Limited | Private company limited by shares | Live |
| MATRIX CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| PACIFIC CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TAI PING CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TAI PING MULTI-LAYERS CIRCUITS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAI PING RIGID-FLEX CIRCUITS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| RISUN CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Success Circuits Technology Limited | Private company limited by shares | Live |
| SUNKING CIRCUITS TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Xing Da Circuits Technology Co., Limited | Private company limited by shares | Live |
| TERMBRAY CIRCUITS COMPANY LIMITED | Private company limited by shares | Live |
| HK TIPTOP PRINTED CIRCUITS LIMITED | Private company limited by shares | Live |
| T-Top ( Hong Kong ) Circuits Limited | Private company limited by shares | Dissolved |
| ULTRAFINE CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| Unice Circuits Limited | | Live |
| UNICORN CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE CIRCUITS LIMITED | Private company limited by shares | Dissolved |
| UNIWELL CIRCUITS LIMITED | Private company limited by shares | Live |
| UNIWELL CIRCUITS (HK) CO., LIMITED | Private company limited by shares | Live |
| SHENZHEN UNIWELL CIRCUITS CO., LIMITED | Private company limited by shares | Live |
| UNIWELL CIRCUITS GROUP LIMITED | Private company limited by shares | Live |
| UNIWELL CIRCUITS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WINTECH CIRCUITS LIMITED | Private company limited by shares | Live |
| WINTECH CIRCUITS TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Shenzhen Witek Circuits Technology Co., Limited | Private company limited by shares | Dissolved |
| WWW. FLYTEC CIRCUITS CO LIMITED | Private company limited by shares | Live |
| ZHONG SEN CIRCUITS LIMITED | | Live |
| Circuittech Resources Co., Limited | Private company limited by shares | Live |
| CIRCUITWORKS HOLDING CO., LIMITED | Private company limited by shares | Live |
| CIRCUITWORKS (HK) LIMITED | Private company limited by shares | Live |
| CIRCUITZEN LIMITED | | Live |