I thought one of the proposed Su-27SK upgrades was the NIIP Pero PESA. When did NIIR offer AESA for the PLAAF Su-27SK?
australia airpower.com
phozotron did offer PESA radar to China, at same time Phozotron is currently working AESA radar for both MiG-39/35 and SU-27/33.and offering to China