| Company | Timeline | Status | |
| R.B. Plant Site Services Limited Director • Electrical Engineer | 23 Nov 2001←19 Years→31 Aug 2021 | Active | |
| R.B. Plant Construction Limited Director • Electrical Engineer | 20 Jun 1991←30 Years→30 Jun 2021 | Active | |
| R.B. Plant Design Limited Director • Unreported | 1 Jan 1970←51 Years→30 Jun 2021 | Active | |
