| Company | Timeline | Status | |
| National Honey Show Limited(The) Director • Engineer | 28 Jul 1997←28 Years→Current | Active | |
| Cleanline Engineering Co. Limited Director • Engineer | 7 Dec 1991←34 Years→Current | Active | |
| Cleanline Engineering Co. Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
