Most of PNs high end surface assets and all of their Aerial assets are going to be Western/Turkish, So I don’t see what you mean. (Seal sultan, ATR-72, MILGEM, Jinnah, new helicopters…)Aoa, I respectfully disagree with your comments
1) the entire PAF hi end radar capability from ground 3d AESA radars , to naval 3d aesa radars on the new and old frigates, to army balloon, Ly80 anti aircraft Battrey & anti artillery radars are Chinese, why would we not buy more such platforms that integrate with all our arms !!!
2)all hi-end AESA radars on the PAF fleet are Chinese e.g jf-17 block 2 , block 3 with AeSA radars and soon to be inducted J-10C. If these are so terrible why are we not equipping them with Swedish radars? They may have maintenance issues but we are maintaining them like all of our equipment ! So this conjecture of not buying more is less about the technology and capability then some feelings people have about inferior Chinese EW and surveillance capability.
finally I believe that the PAF is waiting for the Chinese to mount larger surveillance goodies on Y-20 platform. I truly believe that the PAF will standardize on this platform over the next few years as there transport, refulers and AWaCS fleet.
PAF and PA use a combination of western and Chinese radars. PAF uses western AD systems and their next one will likely be western too. PA might however go for Chinese AD this time.
JF-17 block 2 does not have AESA. JF-17 uses Pakistani data-link.
Y-20 is not offered for export. There is little to no indication that Pakistan will purchase it. There hasn’t even been any interest. It is more likely PAF will go for European, Russian or any other non-Chinese transport/tanker if need and options are there.
You overestimate the PAF and PNs desire to use and buy Chinese systems overall too. They have shown time And again that if the option is there, they will prefer non-Chinese systems to not be dependent on a single source. (unless the Chinese option is clearly and solely the best, which is not always the case). It is never good to put all your eggs in one basket as The forces have learned with their previous dealings with the USA.