| Obese Plein Limited | Private company limited by shares | Live |
| HONG KONG ASSOCIATION FOR THE STUDY OF OBESITY LIMITED | Company limited by guarantee | Live |
| OBEST CO., LIMITED | Private company limited by shares | Live |
| OBEST ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| OBEST ELECTRONICS HONG KONG LIMITED | Private company limited by shares | Live |
| Obest Green Energy Limited | Private company limited by shares | Live |
| OBEST (GERMANY) ELECTRIC GROUP LIMITED | Private company limited by shares | Dissolved |
| OBEST TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| Hong Kong O-Best Investment Co., Limited | Private company limited by shares | Live |
| Obest Industry (Hongkong) Co., Limited | Private company limited by shares | Live |
| O-BEST INTERNATIONAL (US) CO., LIMITED | Private company limited by shares | Dissolved |
| Obestec Industrial Co., Limited | Private company limited by shares | Live |