The Shanghai Academy of Spaceflight Technology (SAST) is a Chinese space agency and subordinate of China Aerospace Science and Technology Corporation (CASC), it is referred to as The Eighth Academy of CASC.^[2] The agency was established in August 1961 as Shanghai Second Bureau of Electromechanical Industry, but was later renamed to Shanghai Academy of Spaceflight Technology in 1993.^[3]

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SAST designs, develops, and manufactures launch vehicles as well as components. They designed and manufactured the Long March 2D, the entire Long March 4 series and FB-1 rockets. The FB-1 launched three military satellites, no details of which have been published. SAST was held responsible for the FB-1 failures between 1973 and 1981.^[3]