OREANDA-NEWS. May 23, 2008. On the instructions of President of Turkmenistan Gurbanguly Berdimuhamedov Vice Premier N. Shaguliev will make a business trip to Munich on May 27-31, 2008 on the invitation of the Siemens AG Company (Germany) to study the operation of the Duisburg Ruhrorta river port and to hold the talks with the German businessmen on the opportunities of co-operation in construction industry, production of construction materials and the sphere of telecommunications.