The SS owned Sudetenquell GmbH (the Sudeten Spring Ltd.) was invented towards the end of 1938 and formally established in April 1939 (several months ahead of the invasion of Poland), as the mineral water producer in Sudetenland during World War II. To develop the springs for mass exploitation a forced labour camp in Czech territory opened in August 1942 in the West Bohemian town of Korunní [cs] (German: Krondorf-Sauerbrunn). It was a subcamp of KZ Flossenbürg.