| GASS LIMITED | Private company limited by shares | Dissolved |
| GASS MEDICAL CENTRE LIMITED | | Live |
| GASSAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| GASSAN OPTICAL LIMITED | Private company limited by shares | Live |
| AMERICAN GASSBO GROUP BRAND MANAGEMENT (HK) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Gasser Industrial Company Limited | Private company limited by shares | Live |
| GASSES UP INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| GASSIE'S LIVING ARTS DESIGN LIMITED | Private company limited by shares | Live |
| GASSIE'S LIVING ARTS DESIGN LIMITED | Private company limited by shares | Live |
| GASSUS INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GASSY COMPANY LIMITED | Private company limited by shares | Dissolved |