| SEI SEI BUSSAN CO., LIMITED | Private company limited by shares | Dissolved |
| CHUGAI BUSSAN CO., LIMITED | Private company limited by shares | Live |
| DENGEN BUSSAN CO., LIMITED | Private company limited by shares | Live |
| FUJISAN BUSSAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| HEIWA BUSSAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| Honda Bussan (Hong Kong) Co., Limited | Private company limited by shares | Dissolved |
| AMI BUSSAN COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG KYOWA BUSSAN LIMITED | Private company limited by shares | Live |
| KATRI BUSSAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOKYO BUSSAN GROUP (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SANSEI BUSSAN (HONG KONG) LIMITED | Private company limited by shares | Live |
| TOKO BUSSAN (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOWSAN BUSSAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| Mitsui Bussan Metals Limited | Private company limited by shares | Live |
| NANKAI BUSSAN COMPANY, LIMITED | Private company limited by shares | Dissolved |
| Ningyocho Bussan HK Limited | Private company limited by shares | Live |
| SHOEI BUSSAN COMPANY LIMITED | Private company limited by shares | Live |
| SHUJIN BUSSAN CO., LIMITED | Private company limited by shares | Dissolved |
| SUMIKIN BUSSAN CO., LIMITED | Private company limited by shares | Live |
| TAIYO BUSSAN TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAKAGI BUSSAN LIMITED | Private company limited by shares | Live |
| TOGEN BUSSAN LIMITED | Private company limited by shares | Dissolved |
| RIKUYO BUSSAN TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TAI TUNG BUSSAN COMPANY LIMITED | Private company limited by shares | Dissolved |