| SERTA COMPANY LIMITED | Private company limited by shares | Dissolved |
| SERTANA LIMITED | Private company limited by shares | Dissolved |
| SERTEC Incorporation (H.K.) Limited | Private company limited by shares | Live |
| SERTEC INDUSTRIAL (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| SERTEK LIMITED | Private company limited by shares | Live |
| SERTEK HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SERTEK TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SERTEX LIMITED | Private company limited by shares | Live |
| Sertex Service Limited | Private company limited by shares | Live |
| I D SERTISSAGE LIMITED | Private company limited by shares | Dissolved |
| ITALY SERTIYOU INTERNATIONAL FASHION LIMITED | Private company limited by shares | Dissolved |
| SERTO ASIA Limited | Private company limited by shares | Live |
| SERTON COMPANY LIMITED | Private company limited by shares | Dissolved |
| SERTON LIMITED | | Live |
| SERTRONICS HONG KONG LIMITED | Private company limited by shares | Live |
| Taiwan Sertur International Group Limited | Private company limited by shares | Live |
| Sertus Incorporations Limited | Private company limited by shares | Live |
| Sertus Corporate Services Limited | Private company limited by shares | Live |
| Sertus Business Solutions Limited | Private company limited by shares | Live |