BONN - A Dutch trade delegation headed by Hans H. Driesser, Director General of the Persian Gulf Department of Foreign Ministry was expected to arrive in Tehran Thursday. Henri G. A. Helmer, the Head of Middle East Department of the Finance Ministry, Wim a.Viskil, the Head of Middle East Department at the Dutch Chambers of Commerce and his assistant Jocob van Dor Vis are the acompanying members of the delegation to Tehran. Other members of the Dutch delegation include representatives of ING banks and NCM Insurance Company. The Dutch delegation is expected to be in Tehran from May 14 through May 21 according to report released by the Embassy of the Islamic Republic of Iran at Hague. (IRNA)