Costfoto/Barcroft Media via Getty Images Improvements to Chinese radar systems are being highlighted at an industry expo in Nanjing. Developments are coming as many countries boost their defenses with drones and stealth aircraft. China has put the spotlight on its advanced radars, highlighting improvements in its ability to track US stealth aircraft at an industry expo, according to state media. The hardware on display at the three-day World Radar Expo in the eastern Chinese city of Nanjing included the long-range SLC-7, JY-26 and LC-8E systems, state-run Global Times reported on Friday. Each of these systems can identify and track stealth aircraft, which are designed to avoid detection and carry out precision strikes against key military assets.