truong chinh 4b boosters

China secretly launched ocean surveillance satellite?
At 3:16 am, on September 2, Beijing time, China uses 'Truong Chinh 4B boosters' to successfully launch satellite 17 on a predetermined orbit.
China launched the first HD satellite next year
Xinhua said China will launch its first high-definition (HD) civilian geographic map in January next year.
China will launch HD satellites later this year
The Department of Geographic Information surveying the Chinese map said it would launch high-definition civilian survey (HD) satellites later this year. This will be the first