Xingyun-2 01 and 02 are the first two satellites of the planned low Earth orbit constellation being built by Xingyun Satellite company, whichi is a subsidiary of CASIC. These satellites will be used to provide Internet of Things (IoT) communications services. Xingyun constellation is planned to consist of 156 satellites in total.
Kuaizhou is a family of Chinese "quick-reaction" orbital launch vehicles. Flying since 2013, Kuaizhou 1 and 1A consist of three solid-fueled rocket stages, with a liquid-fueled fourth stage as part of the satellite system.