YF-2     Propellant: N2O4 / (CH3)2NNH2 Thrust: 31,213 kgf (sl) Burn time: 130 s Specific impulse: 241 s (v) Specific impulse: 268 s (sl) Launch vehicles: CZ 1 First flight: 1969

YF-20     Propellant: N2O4 / (CH3)2NNH2 Thrust: 76,499 kgf (sl) Burn time: 132 s Specific impulse: 289 s (v) Specific impulse: 259 s (sl) Launch vehicles: FB-1, CZ 2A First flight: 1972    YF-21 (4 x YF-20) YF-21A (4 x YF-20A) YF-21A (4 x YF-20A) YF-21A (4 x YF-20A)

YF-20A     Propellant: N2O4 / (CH3)2NNH2 Thrust: 76,499 kgf (sl) Burn time: 132 s Specific impulse: 289 s (v) Specific impulse: 259 s (sl) Launch vehicles: CZ 2C / 3 First flight: 1982

YF-20B     Propellant: N2O4 / (CH3)2NNH2 Thrust: 83,239 kgf (sl) Burn time: 170 s Specific impulse: 289 s (v) Specific impulse: 259 s (sl) Launch vehicles: CZ 2D / 2E / 2F / 3A / 4 / 4B First flight: 1988

YF-20C / F-25     Propellant: N2O4 / (CH3)2NNH2 Thrust: 80,292 kgf (sl) Specific impulse: 297 s (v) Specific impulse: 260 s (sl) Launch vehicles: CZ 3B / 3C / 4C First flight: 1999

YF-22     Propellant: N2O4 / (CH3)2NNH2 Thrust: 73,195kgf (sl) Specific impulse: 295  s (v) Specific impulse: 260 s (sl) Launch vehicles: CZ 3B / 3C / 4C First flight: 1999    YF-22A / 22B

YF-24 (YF-22 + 4 x YF-23) YF-24A (YF-22A + 4 x YF-23) YF-24B (YF-22B + 4 x YF-23)

YF-22E     Propellant: N2O4 / (CH3)2NNH2 Thrust: 80,292 kgf (sl) Burn time: 170 s Specific impulse: 297 s (v) Specific impulse: 260 s (sl) Launch vehicles: CZ 3B / 3C / 4C First flight: 1999

YF-24D (YF-22E + 4 x YF-23B) YF-24E (YF-22BE + 4 x YF-23)F

YF-40     Propellant: N2O4 / (CH3)2NNH2 Thrust: 10,003 kgf (v) Specific impulse: 303 s (v) Specific impulse: 297 s (sl) Launch vehicles: CZ 4 First flight: 1999

YF-50     Propellant: N2O4 / (CH3)NHNH2 Thrust: 49 kgf (v) Specific impulse: ? (v) Launch vehicles: Satellites, Space Tugs

YF-50D     Propellant: N2O4 / (CH3)2NNH2 Thrust: 255 kgf (sl) Specific impulse: 219 s (v) Launch vehicles: Shenzou, Tiangong, Tianzhou, CMS

YF-100     Propellant: O2 / Kerosene Thrust (sl): 124,762 kgf (v) Thrust (sl): 139,395 kgf (sl) Specific impulse: 335 s (v) Specific impulse: 300 s (sl) Launch vehicles: CZ-5 / 6 / 7 First flight: 2016    YF-100GBI Launch vehicles: CZ-6 First flight: 2015    YF-100F

YF-100K     Propellant: O2 / Kerosene Thrust (sl): 140,312 kgf (v) Thrust (sl): 125,527 kgf (sl) Specific impulse: 337 s (v) Specific impulse: 302 s (sl) Launch vehicles: CZ-5

YF-115     Propellant: O2 / Kerosene Thrust (sl): 17,997 kgf (v) Burn time: 341 s Specific impulse: 342 s (v) Specific impulse: 294 s (sl) Launch vehicles: CZ-6 / 7 First flight: 2015

YF-73     Propellant: O2 / H2 Thrust: 4,502 (v) Specific impulse: 420 (v) Launch vehicles: CZ-3 First flight: 1984

YF-75     Propellant: O2 / H2 Thrust: 15,999 (v) Specific impulse: 437 (v) Launch vehicles: CZ-3A / B / C First flight: 1994

YF-77     Propellant: O2 / H2 Thrust: 52,821 (v) Thrust: 71,380 (sl) Specific impulse: 428 (v) Specific impulse: 312 (sl) Launch vehicles: CZ-5 First flight: 2016