Kaituozhe-1 (KT-1) was small, solid fueled launch vehicle based on the road mobile DF-21 IRBM with an additional upper stage (in total 4 stages). It was 13.6 meters in length and 1.4 meters in diameter, with launch mass of 20t. It was possible to launch KT-1 both from a truck-based platform or from airborne platform. It had a 100 kg to LEO payload capacity. It was possibly the launch vehicle for a Chinese ASAT system that was tested against an old Chinese weather satellite in 2007.