The industrial development in mid-19th century brought about the establishment of the technical press in Poland. Before the Second World War there were some 30 magazines catering for engineers, foremen and craftsmen. In 1949, NOT (Main Technological Organisation) created the Administration for Technical Periodicals. The Administration was responsible for publishing all technical magazines of the organisation. Over the past 50 years, the publishing house changed its organisational form and name, and on January 1st 1990, due to economic transformation, it become a sole-shareholder limited liability company of the Main Technological Organisation.