| Company | Timeline | Status | |
| G.D.K. Engineering Holdings Limited Director • Engineer | 4 Jun 1991←14 Years→6 Mar 2006 | Dissolved | |
| O & H Tool And Cutter Grinding Company Limited Director • Engineer | 4 Jun 1991←14 Years→6 Mar 2006 | Dissolved | |
| O & H Tool And Cutter Grinding Company Limited Secretary • Unreported | 4 Jun 1991←14 Years→6 Mar 2006 | Dissolved | |
| G.D.K. Engineering Company Limited Director • Engineer | 4 Jun 1991←14 Years→6 Mar 2006 | Liquidation | |
