1. University of Architecture, Civil Eng. and Geodesy - Средец
bul. "Hristo Smirnenski" 1, 1046 g.k. Lozenets, Sofia, Bulgaria
2. Inter HECS Ltd. - Триадица
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ul. "Milosardna" 8, 1463 Ivan Vazov, Sofia, Bulgaria
3. Strukto - район Лозенец
bul. "Hristo Smirnenski" 74A, 1164 g.k. Lozenets, Sofia, Bulgaria
4. Higher School of Transport "Todor Kableshkov" - Слатина
ul. "Geo Milev" 158, 1574 SPZ Slatina, Sofia, Bulgaria
5. University of Sofia - Средец
bul. "Tsar Osvoboditel" 15, 1504 Sofia Center, Sofia, Bulgaria
6. University of Chemical Technology and Metallurgy - район Студентски
bulevard "Sveti Kliment Ohridski" 8, 1756 Studentski Kompleks, Sofia, Bulgaria
7. Technical University - район Студентски
bulevard "Sveti Kliment Ohridski" 8, 1756 Studentski Kompleks, Sofia, Bulgaria
8. New Bulgarian University - Овча Купел
ul. "Montevideo" 21, 1618 g.k. Ovcha kupel 2, Sofia, Bulgaria
9. МИННО-ГЕОЛОЖКИ УНИВЕРСИТЕТ "СВ. ИВАН РИЛСКИ" - район Студентски
ул."проф. Боян Каменов", 1700 Sofia, Bulgaria
10. Lindner Bulgaria Ltd. - Витоша
ж.к. София Парк, Блок 16Д, етаж 2, 1766 Sofia, Bulgaria
11. Sweco Energoproekt Jsc. - Слатина
20, ul. "Kosta Lulchev" Str, 1113 Sofia, Bulgaria
12. Висше училище по застраховане и финанси (ВУЗФ) - Овча Купел
ul. "Gusla" 1, 1618 kv. Ovcha kupel, Sofia, Bulgaria
13. Veolia Bulgaria EAD - район Красно село
bul. "Tsar Boris III" 159, 1618 Bakston, Sofia, Bulgaria
14. Bulgarian building company – строително инвестиционна фирма - район Лозенец
ул. Асен Йорданов, 1407 Krastova vada, Sofia, Bulgaria
15. BAS - Institute of General and Inorganic Chemistry - Слатина
Sofia, Akad.G.Bonchev St, bl. 11, Bulgaria
16. Ridge Consultants - Оборище
ul. "Professor Asen Zlatarov" 8, 1504 Sofia Center, Sofia, Bulgaria
17. Higher School "Lyuben Karavelov" - район Красна поляна
ul. "Suhodolska" 175, 1373 Sofia, Bulgaria
18. Benchmark Business Centre - Младост
Boulevard "Tsarigradsko shose" 159, 1784 7-mi 11-ti kilometar, Sofia, Bulgaria
19. Institute of Mathematics and Informatics - Слатина
Sofia, Akad.G.Bonchev St, bl. 8, 1113 g.k. Geo Milev, Sofia, Bulgaria
20. Strabag - Младост
Boulevard "Tsarigradsko shose" 115Г, 1784 Poligona, Sofia, Bulgaria