HQ-12
The KS-1 or Kaishan-1 (Chinese: 凯山一号), military designation HQ-12 (simplified Chinese: 红旗-12; traditional Chinese: 紅旗-12; pinyin: Hóng Qí-Yāo èr; lit. 'Red Banner-12'; NATO reporting name: CH-SA-12) is the first Chinese surface-to-air missile to adopt a phased array radar.