| GIKEN P&T ASIA CO., LIMITED | | Live |
| WAKO GIKEN (ASIA) CO., LIMITED | Private company limited by shares | Dissolved |
| KUMITATE GIKEN CO., LIMITED | Private company limited by shares | Live |
| SOW GAIN GIKEN (H. K.) COMPANY LIMITED | Private company limited by shares | Live |
| Hayashida Giken Co., Limited | Private company limited by shares | Live |
| HONG KONG NITTO GIKEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOYO GIKEN (HONG KONG) LIMITED | Private company limited by shares | Live |
| GIKEN SAKA LIMITED | Private company limited by shares | Dissolved |
| Toyo Giken Co., Limited | Private company limited by shares | Live |
| YAMATO GIKEN (H. K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| GIKENT LIMITED | Private company limited by shares | Dissolved |
| GIKENT LIMITED | Private company limited by shares | Dissolved |