| Stefan Zhelyazkov | Bulgarian Association for Trenchless Technologies - BATT |
| Ivan Ivanov | Active Building Inc LTD |
| Penko Stoyanov | Nekton 2 OOD, Varna |
| Ivan Ivanov | Bulgarian Water Association - BWA |
| Pavel Gruev | Stroitelna Mehanizatsia AD, Kazanlak |
| Balio Dinev | David Holding |
| Ivan Stoyanov | Phoenix BT EOOD |
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