The placard at Zhuhai describes the HQ-19 as being able to intercept hypersonic missiles.
So the implication of the placard at Zhuhai'24 is that they have undergone this sort of testing. Of course we will never know unless officially revealed (which they won't).
Manufacturer explicitly says it is rated to stop HGVs. They don't really have a motive to not be truthful on that.
Not every weapon system exhibited at Zhuhai is available for export, with the J-20 and Shenyang's Flankers being the most visible current examples of such, even if the majority of the systems and subsystems on display are exportable in some capacity.
However, in this case, was the HQ-19 publicly showcased for the first time in Zhuhai last year as an acknowledgement to the achievements of the Chinese military-industrial complex and/or otherwise purely as an exercise in political messaging, or was it also exhibited as a
sales pitch to prospective customers, especially in the Middle East?
Considering recent Iranian missile strikes against Israel,
the appearance of the HQ-19 at Zhuhai could have been a nod at renewed Saudi and Emirati interest in enhanced ABM capabilities. Even South Korea is reportedly
their
, even though their program is visibly less mature.
Not to say other prospective export customers aren't out there, especially considering the number of countries currently operating Chinese made IADS, but the HQ-19 also doesn't look particularly affordable.
But then, considering that the HQ-19 is indeed capable of intercepting HGVs per official news media - Perhaps the HQ-19 (or ite derivative variant(s)) is actually what the currently-WIP Glide Phase Interceptor (GPI) is meant to be? I mean, I'd prefer that to be the case, but who knows?
The GPI program is
newer and more
tailored towards HGVs than the HQ-19 program, but assuming that the HQ-19 program is still iterating, there's a reasonable chance some evolutionary convergence will become visible at some point . . . or perhaps CASIC will just get to accuse Northrop of IP theft.
One thing about the GPI program is that it's intended to be AEGIS compatible, which means it'll almost certainly be launchable from Mk 41 cells.
With that said, the emergence of a HHQ-19 sounds plausible.