Erdem ERTUNA, born in 1971 in İstanbul, graduated from Kadıköy Anatolian High School and İstanbul Technical University, faculty of mechanical engineering as mechanical engineering. He completed his education in Los Angeles International University with master’s degree. After working as Marketing and Sales Manager in different companies between 1992-2001, ERTUNA joined Vaillant Group in 2001 and worked as Protherm Brand Manager, Vaillant Group Romania Country Assistant Manager, DemirDöküm Marketing and Sales Director, respectively. He is in current position as Chief Marketing Officer – Türk DemirDöküm and Board Member at Türk DemirDöküm since 2013. Erdem ERTUNA is a member of the Board of Director at İMSAD-Association of Turkish Construction Material Producers, 44th member of the Istanbul Chamber of Industry and a member of DOSİDER- Natural Gas Equipment Manufacturers and Businessmen Association. Since 2013, he has been a member of İSİB-Turkish HVAC-R Industry Exporters as Board of Directors.