01442 398497 / mobile 07765 941205
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| Advanced Technology | Hemel Hempstead | 01442
244902 |
| Dacon Electronics plc | Hemel Hempstead | 01442 233222 |
| Icon Telecom plc | Hemel Hempstead | 01442 232325 |
| Instant Telephone Extensions | Hemel Hempstead | 01442 393076 |
| Paxdata Communications | Hemel Hempstead | 01442 236336 |
| Symphony Telecommunications | Hemel Hempstead | 01442 283300 |
| Telephonetics 2nd floor | Hemel Hempstead | 01442
242242 |
| Teligent Ltd | Hemel Hempstead | 01442 283800 |