Jiuquan Satellite Launch Center (JSLC; Chinese: 酒泉卫星发射中心; pinyin: Jiǔquán Wèixīng Fāshè Zhōngxīn), also known as the Shuang Cheng Tzu Missile Test Center, Launch Complex B2, the Northwest Comprehensive Missile Testing Facility (西北综合导弹试验基地), Base 20, or Unit 63600, is a Chinese spaceport and a corps-grade unit subordinate to the People's Liberation Army Aerospace Force. It is located between Ejin Banner, Alxa League, Inner Mongolia, and Hangtian Town, Jinta County, Jiuquan Prefecture, Gansu Province. The center forms part of Dongfeng Aerospace City (Base 10). Although most of the facility lies within Jinta County, the spaceport is named after Jiuquan. The launch center spans both sides of the Ruo Shui river.