| SHST Hotels Ltd Пловдив, BulgariaReal Estate | Бюджетни Имоти Луксозни Къщи Жилищни Комплекси | |
| BSBlack Sea Economic Zone Cluster (BSEZC) Varna, BulgariaReal Estate | Construction work Architectural, construction, engineering and inspection services Индустриални Паркове Инвестиционни Проекти Строителство На Индустриални Обекти | |
| EEnergoexpert София, BulgariaEnergy, Utilities & Waste Treatment | Public utilities Construction work Водоснабдяване Енергетика Индустрия | |
| GEGTU Engineering & Consultancy Sofia, BulgariaEnergy, Utilities & Waste Treatment | Public utilities Construction work Water Engineering Energy Engineering Strategic Consultancy | |
| KLKMC Ltd. Sofia, BulgariaEnergy, Utilities & Waste Treatment | Construction work Repair and maintenance services Строително-Монтажни Дейности Ремонтни Дейности Електроинсталации | |
| EAEnergoproekt AD София, BulgariaEnergy, Utilities & Waste Treatment | Construction work Architectural, construction, engineering and inspection services Енергетика Гражданско И Транспортно Проектиране Устройствено Планиране | |
| TUTerroleum UGC Limited Sofia, BulgariaEnergy, Utilities & Waste Treatment | Services related to the oil and gas industry Architectural, construction, engineering and inspection services Нефтен И Газов Консултинг Петроложка Геология Сейсмична Интерпретация | |
| НАНелбо АД София, BulgariaFacility Management | Public utilities Construction work Топлинно Счетоводство Дялово Разпределение Отдалечено Отчитане | |
| OOvergas София, BulgariaEnergy, Utilities & Waste Treatment | Construction work Services related to the oil and gas industry Природен Газ Газификация Енергия | |
| BEBulgartransgaz EAD Sofia, BulgariaEnergy, Utilities & Waste Treatment | Construction work Services related to the oil and gas industry Предаване На Природен Газ Съхранение На Природен Газ Трансмисия | |