The Long March 6C is a Chinese launch vehicle of the Long March family, which was developed by the China Aerospace Science and Technology Corporation (CASC) and the Shanghai Academy of Spaceflight Technology (SAST). The vehicle is a further development of the Long March 6A, with its solid rocket boosters deleted, with 2 YF-100 engines on the first stage and 1 YF-115 engine on the second stage.