Engineers - Electronic in Cardiff, South Glamorgan
| Name & Address | Phone # | Website |
| Aptec Systems Ltd 12 The Tudors, Cardiff, South Glamorgan CF23 9BA | 029 20465660 |  |
| E T T Instrumentation Troubleshooters 14 Wordsworth Avenue, Cardiff, South Glamorgan CF24 3FQ | 029 20492863 | |
