| RETEC LIMITED | Private company limited by shares | Live |
| RETEC DESIGN AND CONTRACTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Retec Global Limited | Private company limited by shares | Live |
| HONGKONG RETEC INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| RETEC INTERNATIONAL NEW ENERGY TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| RETECH LIMITED | Private company limited by shares | Dissolved |
| Re-Tech HK Limited | Private company limited by shares | Live |
| RETECH LIMITED | Private company limited by shares | Live |
| GERMANY RETECH CEMENTED CARBIDE TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| RETECH CHEMICALS CO., LIMITED | Private company limited by shares | Live |
| RETECH CHINA LIMITED | Private company limited by shares | Live |
| RE:TECH CHINA LIMITED | | Live |
| HK RETECH CO., LIMITED | | Live |
| RE-TECH DIGITAL ELECTRONIC LIMITED | Private company limited by shares | Live |
| RE-TECH INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| RETECH IOT HONG KONG LIMITED | Private company limited by shares | Live |
| RE-TECH INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| RETECH DIGITAL MEDIA CO., LIMITED | Private company limited by shares | Live |
| Retech Solutions Limited | Private company limited by shares | Live |
| Retech Technology Co., Limited | Private company limited by shares | Live |
| RETECH TECHNOLOGY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| RETECHIN CO., LIMITED | Private company limited by shares | Live |
| RETECK INDUSTRY CO., LIMITED | Private company limited by shares | Live |