| Company | Timeline | Status | |
| GKB Electronics Limited Director • Engineer  | 7 Nov 2000←25 Years→Current  | Active  | |
| XP Engineering Services Limited Director • Electronic Engineer  | 24 Aug 2000←1 Month→20 Oct 2000  | Active  | |
| Hanatomic Engineering Support Limited Director • Electronic Eng.  | 30 Apr 1998←2 Years 5 Months→20 Oct 2000  | Active  | |
