(From the 052 thread)
Nothing but speculation and personal opinion aside from the engine Pielstick there is no proof whatsoever french ever sold subsystem to China recently. All these westerner cannot reconcile the fact that China is now independence in naval warfare
Back in 8o France sold Tavitac command and control center and DUBV 23 sonar system and 57 mm naval gun for Luda improvement. But that was years ago and the system must be outdated by now. The Chinese could improve and those system it becomes indigenous technology
As andyhugfan has already stated, the discussion is on the original 054 frigate, which is equipped with many French origin hardware.
Some of the French imports over the years include:
100mm naval gun (Type 210)
Modular Naval Crotale (HHQ-7)
Castor IIJ (or 2B?) Fire Control Radar (Type 345)
Thomson-CSF TSR 3004 Sea Tiger Radar (Type 363S)
Thomson-CSF TAVITAC (ZKJ-4)
Sintra-Alcatel DUBV-23 hull mounted sonar & DUBV-43 towed sonar (SJD-7 or SJD-9?)
Aérospatiale AS365 & AS565 (Z-9)
Aérospatiale SA-321 Super Frelon (Z-8)
There is very little speculation on the origin of these systems. What would be speculative is the degree of influence that Thomspon-CSF Satan 30mm CIWS or SAGEM VOLCAN system had on the development of the Type 730 CIWS (H/PJ12).
At what point does a "Chinese improved" version of the hardware become more indigenous than import? IMO the Z-9 is still "French" versus the WZ-19 crossed the line to become "Chinese". Your opinion may vary.
As for recent French naval system exports to China, due to the arms embargo this is mostly restricted to dual-use & non-lethal systems, such as the helicopter handling system from DCNS: