ChinaSat 7 or ZX 7 (Zhongxing 7) is a Hughes HS-376 model geostationary telecommunications satellite built for the China Telecommunications Broadcast Satellite Corporation (ChinaSat). It was the first satellite ChinaSat had ordered from a western spacecraft contractor, Hughes Space and Communications International, Inc., known today as Boeing Satellite Systems International, Inc.
The Long March 3 is a chinese orbital carrier rocket. They all launched from Launch Area 3 at the Xichang Satellite Launch Center. It is a 3 stage rocket used to put communication satellites into geosynchronous trasfer orbits.
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.INFO WIKI