the Güldner Motoren-Gesellschaft mbH in Munich, which was moved to Aschaffenburg in 1906. Linde took full ownership of the company in 1929, and from this origin developed a business manufacturing first engines and tractors, and then from the 1950s onwards, a range of mechanical handling equipment such as fork lift trucks. Linde also acquired the Aktiengesellschaft für Industriegasverwertung (english: Corporation for Industry Gas Utilization), commonly referred to as the Heylandt Works. Following World War I, Linde's U.S. assets were confiscated. They were incorporated into the Union Carbide Corporation (UCC) as the Linde Air Products division in 1917. In the years of Nazi Germany, Linde AG benefited from the country's attempt to become self-sufficient by refraining from imports of synthetic fuel and rubber. In 1935, general manager Friedrich Linde received the title of Wehrwirtschaftsführer, which underlined the national importance of Linde AG and allowed the company to further benefit from the German rearmament. Before and during World War II, all departments of Linde AG were in some way involved in the armaments production: The Heylandt-Gesellschaft für Apparatebau supplied the German rocket program, other branches produced welding equipment and engines for the armaments industry. In 1941, Linde manufactured oxygen and helium installations for IG Farben at the Auschwitz concentration camp. Three further planned installations were not installed due to the course of war. According to estimates of the company for mid-1944, between 400 and 500 people were used as forced labourers in production plants. The company claimed that 75% of its production facilities were destroyed during the war. In 1958, the company tested a hydraulic drive system in the "Hydrocar". In 1989, the company acquired Lansing Bagnall, a British forklift manufacturer. In 1996, the company acquired the rights to the Linde name from Praxair. In 2000, the company completed the acquisition of AGA AB of Sweden for $3.71 billion. In the early 2000, Brazilian auction was invented as a new type of auctions to trade gas by electronic auctions for Linde plc in Brazil. In 2004, the company sold its refrigeration division to Carrier Corporation for €325 million. In September 2006, Linde acquired The BOC Group for €11.7 billion in cash. Linde's forklift business was rebranded as KION Group and sold to Kohlberg Kravis Roberts and Goldman Sachs for €4bn in January 2007. In March 2007, the BOC Edwards semiconductor equipment business was sold to private equity firm CCMP Capital for €685m.