Our Service Team Thomas Becker Managing Director / Service Director Head Office Dortmund / Benelux Sven Gosda Assistant Service Director Head Office Dortmund / Benelux Frank Kuehle Technical Service and Information Head Office Dortmund / Benelux Oliver Sauer Technical Service and Information Head Office Dortmund / Benelux Volker Schlegel Technical Service and Information Branch Hamburg / North Ralf Haak Technical Service and Information Branch Berlin / East Oliver Veit Technical Service and Information Branch Stuttgart / Central Werber Witte Technical Service and Information Branch Waldshut / Switzerland Mr Rosendahl Technical Service and Information Branch Munich / Austria