| MICROSYS COMPANY LIMITED | Private company limited by shares | Dissolved |
| MICROSYS LIMITED | Private company limited by shares | Dissolved |
| JP MICROSYSTEM LIMITED | Private company limited by shares | Dissolved |
| MG MICROSYSTEM LIMITED | Private company limited by shares | Live |
| YX Microsystem Limited | | Live |
| SANHO MICRO-SYSTEM DESIGN LIMITED | Private company limited by shares | Dissolved |
| MICRO-SYSTEM SERVICE CENTRE LIMITED | Private company limited by shares | Dissolved |
| SpiralX Microsystem Limited | | Live |
| T. S. MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| LEO MICROSYSTEMS LIMITED | Private company limited by shares | Dissolved |
| WTC MICROSYSTEMS LIMITED | Private company limited by shares | Dissolved |
| PSi Microsystems Limited | Private company limited by shares | Dissolved |
| One Microsystems Limited | Private company limited by shares | Live |
| ELM Microsystems Limited | | Live |
| MCS MICROSYSTEMS ASIA LIMITED | Private company limited by shares | Live |
| DIGITAL MICROSYSTEMS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SUN MICROSYSTEMS OF CALIFORNIA LIMITED | Private company limited by shares | Live |
| SUN MICROSYSTEMS CHINA LIMITED | Private company limited by shares | Dissolved |
| C-NOVA MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| ACUTI MICROSYSTEMS CO., LIMITED | Private company limited by shares | Dissolved |
| E-FLEX SMT MICROSYSTEMS CO., LIMITED | Private company limited by shares | Live |
| EAST TALENT MICROSYSTEMS LIMITED | Private company limited by shares | Dissolved |
| ECHELON MICROSYSTEMS LIMITED | Private company limited by shares | Dissolved |
| ELINT MICROSYSTEMS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| FOUNTAIN MICROSYSTEMS LIMITED | Private company limited by shares | Dissolved |
| GALAXY MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| INTECHWARE MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| INTELLIGENT PRECISION MICRO-SYSTEMS LIMITED | Private company limited by shares | Live |
| KOLORIFIC MICROSYSTEMS COMPANY LIMITED | Private company limited by shares | Dissolved |
| PENNOCK MICROSYSTEMS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| KONTEL MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| LEICA MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| LINHY MICROSYSTEMS LIMITED | | Live |
| NetLogic Microsystems Asia HK Limited | Private company limited by shares | Live |
| PALIT MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| PERFECTSOFT MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| PowerLayer Microsystems (Hong Kong) Limited | Private company limited by shares | Dissolved |
| RFID MICROSYSTEMS HONG KONG LIMITED | Private company limited by shares | Live |
| SHAOLIN MICROSYSTEMS LIMITED | Private company limited by shares | Live |
| ADVANCED MICROSYSTEMS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| ANALOG MICROSYSTEMS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| TRIDENT MICROSYSTEMS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| Trident Microsystems (Hong Kong) Limited | Private company limited by shares | Live |