| S.R.T. Company Limited | Private company limited by shares | Dissolved |
| S.R.T. Entertainment Company Limited | Private company limited by shares | Dissolved |
| SRTC Workshop Co., Limited | Private company limited by shares | Dissolved |
| SRTEK COMMUNICATIONS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SRTEP TECHNOLOGY LIMITED | | Live |
| SRTEX LIMITED | Private company limited by shares | Live |
| SRTL Limited | Private company limited by shares | Live |
| SRT-LED- LIMITED | Private company limited by shares | Live |
| SRTS FAR EAST LIMITED | Private company limited by shares | Live |
| SRTVISION ELECTRONIC TECHNOLOGY CO., LIMITED | | Live |