HQ-22
The HQ-22 (simplified Chinese: 红旗-22; traditional Chinese: 紅旗-22; pinyin: Hóng Qí-22; lit. 'Red Banner-22'; NATO reporting name: CH-SA-20) is a medium- to long-range semi-active radar homing/radio-command guidance air defence system developed and manufactured by the China Aerospace Science and Industry Corporation (CASIC).