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Koumbas Synergy Group S.A. is an holding company, which engages in the investments and participating in other companies. The firm's participation sectors include finance, insurance, marketing, health care, business consultancy, real estate, construction and business communication. Its key strategic objective is its development into a powerful group of participations. The company was founded by Georgios M. Koumbas in 1971 and is headquartered in Marousi, Greece.

Remaco SA is a strategic consulting and Greek solutions company that offers expert and innovative advisory services to both public and private sectors. The company is based in Marousi, Greece, and the CEO of the company is Nikolaos I. Papadatos. The company provides data management and procedure support, management of statutory planning and development, and business solutions.