2004 purchase of an ownership stake in a Korean SUV-maker, Ssangyong, soured. In January 2009, after an additional US$45 million was provided to it by SAIC, SsangYong Motor Company was placed into receivership in Korea. Courts might have mandated SAIC reduce its ownership, and by 2010 a 51.33% share of the Korean company had become a 10% one. The 2009 Ssangyong failure also saw riot police quell protesting Ssangyong workers who staged a 77-day-long sit in. SAIC may have benefitted from exposure to some technology from Mercedes that Ssangyong controlled during this time. 2010 to present In 2010, SAIC produced 3.58 million units, the largest output of any China-based automaker that year. In June 2010, Magneti Marelli and Shanghai Automobile Gear Works (SAGW) officially launched a new joint venture plant in the Jiading district near Shanghai, China. SAGW, the main Chinese manufacturer of transmissions for the automotive sector, is a subsidiary of SAIC Motor. In February 2011, SAIC unveiled a new commercial vehicles marque, Maxus. On 13 April 2011, vehicle assembly resumed at the MG Motor UK Longbridge plant as the first MG 6 to be produced in the United Kingdom came off the production line, but ended in 2016 when SAIC moved production to China. it retained a technical subsidiary SAIC Motor UK on site until 2019. In 2011, SAIC produced 3.97 million vehicles, the largest output of any China-based automaker that year. In June 2012, SAIC's United States-based subsidiary Shanghai Automotive Industries Corp USA, Inc. opened a new North American Operations Center in Birmingham, Michigan. The opening ceremony was attended by Rick Snyder, Governor of Michigan, Oakland County Executive L. Brooks Patterson, and senior executives from General Motors and SAIC Motor. The 30,000-square-foot, three-story facility will house nearly 100 staff and focus on sourcing components. In 2012, SAIC retained its top spot among domestic rivals by producing around 3.5 million units. Mergers and company name-changes The present-day SAIC is the product of numerous mergers and corporate re-structurings. Shanghai Internal Combustion Engine Components Company was founded in December 1955. In March 1958, Shanghai Internal Combustion Engine Components Company and Shanghai Powertrain Equipment Manufacturing Company were merged into Shanghai Powertrain Machinery Manufacturing Company. In January 1960, Shanghai Powertrain Machinery Manufacturing Company was renamed Shanghai Agricultural Machinery Manufacturing Company. In April 1969, Shanghai Agricultural Machinery Manufacturing Company was renamed Shanghai Tractor Industry Company. Shanghai Automobile & Tractor Company was established in