1. AMIKON Ltd.
  2. ARTEKS ENGINEERING PLC
  3. BOKAR Ltd.
  4. BUL STROI KONTROL ENGINEERING PLC
  5. DIKANSKI & PARTNIORI Ltd.
  6. ELIIOS Ltd.
  7. FINA 5 Ltd.
  8. GEOTECHMIN Ltd.
  9. GREENLIFE PLC
  10. ILSTROY Ltd.
  11. INTERGAMA Ltd.
  12. IZOLA-PETROV Ltd.
  13. MIKO-CONSULT Ltd.
  14. NVG GROUP Ltd.
  15. STROYINGENERING-INVEST Ltd.
  16. TERAZID Ltd.
  17. VECHNA-R Ltd.
  18. VEST AV Ltd.
  19. VICING ENGINEERING Ltd.
  20. WURTH-BULGARIA Ltd.