Shijian 4 & Kuafu-1

KF 1 (Kua Fu 1) was a mass model of the DFH-3 comsat launched on the maiden flight of the CZ-3A rocket.

SJ 4 (Shi Jian 4) was a satellite to monitor the space radiation environment and its effects in an elliptical orbit. SJ-4 was built by CAST (China Academy of Space Technology). The spin-stabilized spacecraft had a mass of 397 kg with a diameter of 1.6 m and a height of 2.1 m.