The launch took place at 12.25 p.m. from the Jiuquan Satellite Launch Centre, Xinhua news agency reported.
The satellites were carried by a Long March-4C rocket, the 271st mission for the Long March rocket family.
The mission also sent a micro nanotechnology experiment satellite into orbit.
The satellites will be used for electromagnetic environment surveys and other related technology tests.
China launched the first "Yaogan" series satellite, Yaogan-1, in 2006.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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