| Cassette Limited | Private company limited by shares | Live |
| OCEAN CASSETTE ACCESSORIES MANUFACTORY LIMITED | Private company limited by shares | Live |
| VIDEO COLOUR CASSETTE DISTRIBUTORS LIMITED | Private company limited by shares | Dissolved |
| CREST CASSETTE (HK) LIMITED | Private company limited by shares | Dissolved |
| YEE HING CASSETTE FACTORY LIMITED | Private company limited by shares | Dissolved |
| WAI TAK CASSETTE MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| CASSETTE MOTOR LIMITED | Private company limited by shares | Live |
| PRECISION CASSETTE COMPONENTS LIMITED | Private company limited by shares | Dissolved |
| TUNG SHING CASSETTE TAPE MANUFACTURERS LIMITED | Private company limited by shares | Dissolved |
| CASSETTE SPECIALTY LIMITED | Private company limited by shares | Dissolved |
| STAR CASSETTE TAPE MANUFACTORY LIMITED | Private company limited by shares | Live |
| WAI KEI VIDEO CASSETTE LIMITED | Private company limited by shares | Live |
| SANLI VIDEO & CASSETTE COMPONENTS LIMITED | Private company limited by shares | Live |
| JACKIN VIDEO CASSETTE CO. LIMITED | Private company limited by shares | Dissolved |