Danish Union of Professional TechniciansThe Danish Union of Professional Technicians is a trade union in Denmark. It is an affiliate of the Danish Confederation of Trade Unions.WWW tl.dkHistoryThe Danish Union of Professional Technicians was founded in 1919. It became a member of LO in 1994.LocationThe Danish Union of Professional Technicians is based in Teknikernes Hus at Nørre Voldgade 12 in central Copenhagen. The building is the former headquarters of Kastrup Glasværk. It is from 1892 and was designed by the architect Philip Smidth.