China's Type 052C S-band AESA radar has 450km range.
Type 052C destroyer - Wikipedia, the free encyclopedia
"Radar
The ship is the first Chinese ship fitted with a multifunction Active Phased Array Radar with four antenna arrays, with a reported name Type 348 Radar. China originally imported a Ukrainian C-band active phased array radar for evaluation, but decided that the radar did not meet the Chinese requirement. Instead, China adopted a domestic S-band multifunction active phased array radar with four antenna arrays. The radar is developed by the Research Institute of Electronic Technology (also more commonly known as the 14th Institute) at Nanjing, Jiangsu province, and it is a successor to the 14th Institute's earlier developed Type H/LJG-346 SAPARS (Shipborne Active Phased Array Radar System) that was completed in 1998. Chinese discovered that the S-band adopted by the American AN/SPY-1 passive phased array could be better suited for the requirements for the active phased array radar as well.
The radar has reported name of Type 348 Radar and a maximum range of 450 km, and a maximum resolution of 0.5 metres. However, under an earlier but completely different contract, Ukraine did provide cooling technologies for the antenna to China. According to many Chinese claims on the internet, the name assigned for Type 348 radar is Sea Lion, but others claim the name only applies to the export version."
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On other forums, I have expressed my opinion the Aegis is superior to China's "Magic Shield." The Aegis undergoes constant upgrades and I don't remember the current mod number. China has less years of experience and less installed platforms and therefore, it is in second place.