HQ-2J or Hongqi-2 (红旗二号导弹) are anti-aircraft missiles mounted on the Type 77 transporter launcher. It is an upgraded version of the HQ-2 system. The HQ-1/HQ-2 are developed from the Soviet S-75 Dvina SAM system. The HQ-2 has been China's primary air defence system for over forty years.
The HQ-2J was developed by China National Precision Machinery Import and Export Corporation (CPMIEC) for the PLA Army.
Also Iranian developed Sayyad-1 missile from HQ-2 missile.
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