The first Chinese GEO satellite Dongfanghong 2 (DFH-2) deployed on April 4, 1984. With 2 C-band transponders and a global beam horn antenna, DFH-2 provided 24-hour communications services in all weather conditions, such as phone, TV, radio, and other communication experimentation.
On the basis of DFH-2, China developed and launched four DFH-2A communications satellites in succession.
On May 12, 1997, China launched a DFH-3 medium-capacity geostationary communications satellite, with 24 C-band transponders. It had design lifespan of eight years. New breakthroughs in the development of DFH-3 technology include 3-axis-stabilised satellite control, bipropellant liquid propulsion and common bus design, etc, driving space technology and bringing China's communications satellite technology to new levels.
Xinnuosat-2(Sinosat-2) and Nigcomsat-1, both developed by China Aerospace Science and Technology Corporation (CASC), were launched in October, 2006 and May, 2007 respectively. The two satellites were built on the basis of a new generation of GEO telecommunication satellite platform, namely DFH-4. DFH-4 is of high power, high quality and high reliability. DFH-4 can provide an output power of 10 KW by the end of its lifetime. Its payload weighs up to 800 kilogram and its design life is 15 years.
On July 6,2007, China delivered the Nigcomsat-1 Satellite to Nigeria, marking the first of Chinese whole satellite export. The Nigcomsat-1 was manufactured based on DFH-4 platform.