| Company | Timeline | Status | |
| Sia Abrasives (G.B.) Ltd Director • General Manager | 1 May 2009←3 Years→22 Oct 2012 | Active | |
| Sia Abrasives Holding Limited Director • General Manager | 8 Apr 2009←3 Years→22 Oct 2012 | Active | |
| Sia Fibral Limited Director • General Manager | 8 Apr 2009←3 Years→22 Oct 2012 | Active | |
| Sia (G.B.) Limited Director • General Manager | 8 Apr 2009←4 Years→17 Sep 2013 | Active | |
| Sia Abrafoam Limited Director • General Manager | 1 Apr 2009←3 Years→15 Oct 2012 | Active | |
