In other cases Danish companies combine in groups, often with a relevant public authority as a partner, to supply complete systems together with the administrative services involved - examples here include an entire public health service, an ambulance system and associated hospital services, signalling systems for railways, and others. A special company connected with Denmark's Ministry of Social Affairs exports technical aids and systems for nursing homes and housing for elderly people. Systems for establishing and operating social welfare institutions have been exported to Germany, the Baltic countries, countries in Asia and others. Denmark demonstrated its expertise in this very special export category at an exhibition during the World Summit for Social Development in Copenhagen in March 1995. Danish architects and building companies are very active internationally.
Danish engineers have a fine reputation as bridge builders.
Denmark itself is in the middle of an extensive programme of bridge and tunnel construction, including a permanent link between Funen and Zealand and another between Denmark and southern Sweden. Danish industrial products have won an international reputation in many different fields, from beer to insulin, hearing aids and consumer electronics, building bricks for children to environmental equipment. The transport sector includes some of the world's largest shipping companies. Four fifths of the freight is carried in liner traffic. The mercantile fleet includes many special vessels, usually built in Denmark, ranging from arctic region freighters to environmental patrol vessels.