After leaving the defense industry I worked for more than 20 years with mobile phone technology all the way from 3G via 4G and finally 5G. And as most here probably know, China has built up a big indigenous industry there as well.
I'm a systems engineer by trade and I worked closely together with Ericsson Research and have made several contributions to the 3GPP standard and have several patents in the area to my name. And I would say that during most of those 20 years the overwhelming number of contributions that made it into the mobile phone standard were from Ericsson and Nokia. To be honest, the early Chinese contributions were not very technically impressive and looked like they had been google translated but by the time I retired they were certainly quite good.
Now many mobile phone operators today certainly buy Chinese mobile phone systems. But I would argue that that is mostly due to a good price/performance combination because when Ericsson lost tenders this was mostly due to pricing. In fact, some other mobile phone vendors were marketing their products as "Ericsson quality at Huawei prices". So certainly, Chinese technology can be pretty good. But is it really as good as the latest Western technology? I have my doubts.
I don't usually post w/o somehow tying it to the original subject but will make (a short-ish) exception here. You have much, much better visibility and understanding than I into all matters EM but even I have been able to observe (at times) a large and persistent number of Chinese exchange students on some campuses, namely those that have been central to EM/mobile tech development. The trend was clear just by that metric alone. To what extent emulation has evolved into innovation is debatable but academic metrics (I didn't bother to wade into those for this) certainly give an idea. Certainly the exchange flow isn't unidirectional anymore.
Of late some mobile operators, I think, have started to advertise they're not reliant on Chinese base stations and other relevant tech which is telling about the state of general awareness about certain trends in our World. Types of government and societal factors do matter and I posit that while EU arrangements such as GPDR are generally seen as hindrances and complications, in time they can turn out to be competitive advantages as well. Asian competition in general has been harsh but R&D at both Ericsson and Nokia (from what I've been able to parse together without paying too much attention) seems to continue apace.
Latent engineering skills that have splintered away from pioneering corporations though market shocks and reorganizations have resulted in a relatively vibrant startup culture and some migration into defense also.