The TY-90 SAM is mainly intended for the interception of aircraft and missiles flying in medium-low-altitude. It uses an IR-homing guidance system. The missile can be used in a mobile tactical air defence system or mounted on a self-propelled SAM vehicle.
The Chinese Yitian 6×6 Wheeled SAM System is a low-level air defence missile system. NORINCO the manufacturer first showed the vehicle in late 2004. The system consists of eight TY-90 SAM missiles, a target acquisition radar, and an electro-optical passive tracking director. Its been seen mounted on a number of vehicles including the WZ551 6×6 IFV/APC.