| S.M.T. ASSEMBLY LIMITED | Private company limited by shares | Live |
| Y E S (SMT) PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| S.M.T. TOURIST LIMITED | Private company limited by shares | Dissolved |
| SMT10 Limited | Private company limited by shares | Live |
| SMT500 Limited | Private company limited by shares | Live |
| SMTC LIMITED | Private company limited by shares | Live |
| SMTech Co., Limited | Private company limited by shares | Dissolved |
| SMTECS GROUP LIMITED | Private company limited by shares | Live |
| SMTEK ENGINEERING LIMITED | Private company limited by shares | Live |
| SMTER ELECTRONICS (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Smtguide Electronics Limited | Private company limited by shares | Live |
| SMTH Company Limited | Private company limited by shares | Live |
| SMTHOME CO., LIMITED | Private company limited by shares | Live |
| SMTOK LIMITED | Private company limited by shares | Live |
| SMTOP TECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SMTRACING CO., LIMITED | | Live |
| SMTSKY ASIA LIMITED | Private company limited by shares | Live |
| SMTSKY ASIA TECHNOLOGY LIMITED | Private company limited by shares | Live |