| Company | Timeline | Status | |
| Sign Holdings Limited Director • Company Secretary | 17 Aug 1991←16 Years→4 Sep 2007 | Active | |
| Sign Holdings Limited Secretary • Unreported | 17 Aug 1991←16 Years→4 Sep 2007 | Active | |
| Industrial Gas Springs Limited Director • Company Secretary | 17 Aug 1991←16 Years→4 Sep 2007 | Active | |
