The China Aerospace Science and Technology Corporation (CASC) is the main contractor for the Chinese space program. It is state-owned and has a number of subordinate entities which design, develop and manufacture a range of spacecraft, launch vehicles, strategic and tactical missile systems, and ground equipment. It was officially established in July 1999 as part of a Chinese government reform drive, having previously been one part of the former China Aerospace Corporation. Various incarnations of the program date back to 1956.
ChinaSat-9A is based on the DFH-4 satellite platform and is to provide direct broadcast services with eighteen 36MHz and four 54MHz BSS Ku band transponders. Together with ChinaSat-9 direct broadcast satellite, ChinaSat 9A is designed to serve the radio and TV transmission, digital film and digital broadband multi-media system as well as information and entertainment broadcasting market.