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.
Ziyuan is a series of remote sensing satellites in Sun-synchronous orbit around Earth. Ziyuan 3-02 is a Chinese Earth observation satellite, a high-resolution imaging satellite operated by the Ministry of Land and Resources of the People's Republic of China.