| KAMMA COMPANY LIMITED | Private company limited by shares | Dissolved |
| KAMMA CO., LIMITED | Private company limited by shares | Live |
| KAMMA (HONG KONG) INDUSTRIAL LIMITED | Private company limited by shares | Live |
| KAMMA PELLAMI LIMITED | Private company limited by shares | Dissolved |
| KAMMANN MACHINES (H.K.) LIMITED | Private company limited by shares | Dissolved |
| KAMMAR INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| KAMMAR INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| KAMMAR TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| KAMMAS INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| KAMMAVACA LIMITED | Private company limited by shares | Dissolved |
| KAMMAX LIMITED | Private company limited by shares | Live |
| KAMMAX INVESTMENTS LIMITED | Private company limited by shares | Live |
| KAMMAY ENGINEERING LIMITED | Private company limited by shares | Dissolved |