Yuanzheng is a restartable upper stage developed by the China Academy of Launch Vehicle Technology (CALT) for the Long March rocket family.
Yuanzheng upper stages from left to right: YZ-1, YZ-1A, YZ-1S, YZ-2, YZ-3
Long March (rocket family)
The Long March rockets are a family of expendable launch system rockets operated by the China Aerospace Science and Technology Corporation.
The rockets are named after the Chinese Red Army's 1934–35 Long March military retreat during the Chinese Civil War.
Long March 1
Long March 1 engine
Long March 2F is the only human-rated launch vehicle of the Long March family.
Three engines using three different combination of propellants. From left to right: YF-20 using N2O4 and UDMH, YF-100 using LOX and kerosene, YF-77 using LOX and LH2