Nebula-1     Engine configuration: 9+1 Thunder-R1     Level: 2     Carrying capacity: 2 tons @ LEO improved version to 8 tons     Arrow diameter: 3.35 meters    Engine system: liquid oxygen kerosene

Nebula-1 Improved Type
    星云-1B    Engine configuration: 11+1 Thunder-R1     Level: 2     Carrying capacity: 2 tons @500km SSO     Arrow diameter: 3.35 meters    Engine system: liquid oxygen kerosene

Nebula-2     Engine configuration: 11+1 Super Thunder   Level: 2     TCarrying capacity: 25 tons @ LEO      Arrow diameter: 5 meters     Engine system: liquid oxygen kerosene