As a graduate engineer in mechanical engineering, Mr. Happel has more than 25 years of experience in sales and marketing, where he held leading positions in corporations and in medium-sized industries. Mr. Happel gained his experience as a member of the management board, sales and marketing manager, and branch manager. Among other things, he was responsible for the international orientation of the companies as well as their strategy and organizational development. Mr. Happel possesses special knowledge in the fields of electrical engineering and information technology, roller shutter and sun protection technology, as well as window and facade construction. This also results in good and close contact with the manufacturing industry, the trades and their services.