| M.T.S. INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| M.T.S. INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| MTSANBOSHI ELECTRIC APPLIANCE (ASIA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| M.TSANG HOLDINGS LIMITED | Private company limited by shares | Live |
| MTSC LIMITED | Private company limited by shares | Live |
| MTS-C INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| MTSI LIMITED | Private company limited by shares | Live |
| M.T.S.J. CO., LIMITED | Private company limited by shares | Dissolved |
| Oriental MTSR International Education Company Limited | Private company limited by shares | Dissolved |
| MTSS LIMITED | Private company limited by shares | Live |
| MT-STAR (HK) LIMITED | Private company limited by shares | Live |
| Hong Kong Mt.Star Co., Limited | | Live |
| MTSTAR INTERNATIONAL LIMITED | | Live |
| MTSZ COMPANY LIMITED | Private company limited by shares | Dissolved |