| SESI LIMITED | Private company limited by shares | Live |
| SESI ELECTRONICS LIMITED | Private company limited by shares | Live |
| SESI CULTURAL DISSEMINATION (HK) LIMITED | Private company limited by shares | Dissolved |
| SESI TECHNOLOGY HOLDINGS (HK) CO., LIMITED | Private company limited by shares | Live |
| SESI PEARL COMPANY LIMITED | Private company limited by shares | Live |
| SESI Package Trading Limited | Private company limited by shares | Live |
| SESIC LIMITED | | Live |
| S.E.S.I.C.E.T.T. LIMITED | Private company limited by shares | Live |
| SESION GLOBAL LIMITED | Private company limited by shares | Live |
| SESITUS LIMITED | Private company limited by shares | Live |