| Company | Timeline | Status | |
| RSP Design Services Limited Director • Director | 16 Jun 2010←15 Years→2 Oct 2025 | Dissolved | |
Design Facades Limited Director • Designer | 1 Sep 2001←17 Years→7 Apr 2019 | Dissolved | |
Design Facades Limited Secretary • Unreported | 7 Aug 2000←18 Years→7 Apr 2019 | Dissolved | |
| Parkwood Engineering Co. Limited Director • Director | 14 Jun 1991←34 Years→Current | Liquidation | |
