| TSUST (HK) COMPANY LIMITED | Private company limited by shares | Live |
| TSUST TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NITTSU TSUSYO CO., LIMITED | Private company limited by shares | Live |
| TSUTA (HK) Limited | Private company limited by shares | Live |
| TSUTAWA COMPANY LIMITED | Private company limited by shares | Live |
| TSUYOSHI HK LIMITED | Private company limited by shares | Dissolved |
| TSUZUKI CONCRETE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| KB TSUZUKI K. K. (HONG KONG) LIMITED | Private company limited by shares | Live |
| TSUZUKI DENSAN HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| TSUZUMI COMPANY LIMITED | | Live |
| Tsuzumi Electronics Co., Limited | Private company limited by shares | Live |