- Family: Long March 4
- Length: 44.1 m
- Diameter: 3.35 m
- Launch Mass: 249 T
- Low Earth Orbit Capacity: 4200 kg
The Long March 4B was manufactured by China Aerospace Science and Technology Corporation with the first launch on 1999-05-10. Long March 4B has 47 successful launches and 1 failed launches with a total of 48 launches. The Long March 4B (Chinese: 长征四号乙火箭), also known as the Chang Zheng 4B, CZ-4B and LM-4B is a Chinese orbital carrier rocket. Launched from Launch Complex 1 at the Taiyuan Satellite Launch Center, it is a 3-stage rocket, used mostly to place satellites into low Earth and sun synchronous orbits.
