At 9:00 a.m. on July 30, China successfully launched the Communication Technology Test Satellites No. 27 A and B into space from the Taiyuan Satellite Launch Center using a Long March 6 Modified launch vehicle. The satellites smoothly entered their planned orbits, marking a complete success for the launch mission.

The Communication Technology Test Satellite No. 27 A/B is primarily used for satellite communications, broadcasting, and data transmission, and is also used to conduct related technical trials and verification.

This mission marks the 660th flight of the Long March series of launch vehicles.