Saudi Arabia and the United Arab Emirates are among 70 countries sending delegates from 4,200 Industrial Groups to the Hanover International Computing and Technology Exhibition, scheduled to be opened here on Tuesday by German Chancellor Angela Merkel and Turkish Prime Minister Recep Tayyip Erdogan. During his stay in Germany, Erdogan is expected to hold talks with the German Chancellor on the latest developments in the Middle East and the Turkish-German relations as well as Ankara's relations with the EU and other international issues.