| Company | Timeline | Status | |
| Birchwood Portable Accommodation Limited Director • Director | 30 Jun 2005←20 Years→Current | Active | |
| Birchwood Mobile Office Co.Limited(The) Director • Director | 24 Nov 2001←23 Years→Current | Active | |
| Birchwood Mobile Office Co.Limited(The) Secretary • Director | 24 Nov 2001←21 Years→24 Aug 2023 | Active | |
| Birchwood Mobile Office Co.Limited(The) Director • Director | 24 Nov 2001←23 Years→30 Jun 2025 | Active | |
