| Company | Timeline | Status | |
| Solid Stampings Limited Director • Works Manager | 20 Jul 1992←11 Years→3 Mar 2004 | Active | |
| Solid Engineering Limited Director • Works Manager | 20 Jul 1992←11 Years→3 Mar 2004 | Active | |
| Solid Swivel Company Limited(The) Director • Works Manager | 20 Jul 1992←11 Years→3 Mar 2004 | Active | |
