| Company | Timeline | Status | |
| R.B. Plant Site Services Limited Secretary • Unreported | 28 Nov 1991←8 Months→27 Jul 1992 | Active | |
| R.B. Plant Construction Limited Secretary • Unreported | 20 Jun 1991←1 Year 1 Month→27 Jul 1992 | Active | |
| R.B. Plant Site Services Limited Secretary • Unreported | 1 Jan 1970←22 Years→27 Jul 1992 | Active | |
