| Company | Timeline | Status | |
| Autograph (Holdings) Limited Director • Sound Consultant | 27 Jul 1992←5 Years→16 Mar 1998 | Active | |
| Autograph Sales Limited Director • Sound Consultant | 27 Jul 1992←5 Years→16 Mar 1998 | Active | |
| Autograph Sound Recording Limited Director • Sound Consultant | 27 Jul 1992←5 Years→16 Mar 1998 | Active | |
| Autograph Communications Limited Director • Sound Consultant | 18 May 1992←5 Years→16 Mar 1998 | Active | |
