The PLAAF does not have equivalents of every type of non-powered PGM the USAF has. In that thread I specifically mention that the PLAAF's only type of non-powered PGM in meaningful service is the 500kg LGB (LT-2/GB500), and that they do not have any other PGMs in service, like the FT family, LS family, or other ones of the LT or GB families.
Those systems are offered for export and have had testing yes, but the PLAAF has definitely not committed to any of them, and we cannot by any reasonable estimate say that the PLAAF "has" them.
Instead, we can say that the Chinese aerospace industry has equivalents of most non-powered PGM types that the US aerospace industry has developed.
But the PLA itself has yet to put its money where its mouth is and to actually buy stocks of PGMs in number.
Buying them in number and possessing them in inventory is a very very very major milestone and isn't something that can just be assumed to be able to easily happen. It requires money to buy the weapons, money to integrate them into the various aircraft types, money to train people to maintain and operate them on the airbase, money to train the pilots to operate them across your entire aircraft fleet.
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I'm not sure what you mean by standoff PGMs. If you're talking about powered standoff PGMs/ALCMs, the PLA has KD-88 in service, which should be an excellent missile with multiple modern variants of it... but it is still a relatively large weapon.
Good for striking targets at standoff range where air control has yet to be attained, yes, and by virtue of being guided with man in the loop options, it can hit moving targets yes.
But unpowered PGMs can also hit moving targets (laser guided PGMs, ImIR guided PGMs, or MMW guided PGMs), they just have to be employed closer to the target.
The main benefit of standoff powered PGMs versus unpowered PGMs is that you can carry much more of the latter in the place of the former.
On a JH-7/A, you can literally carry six 250kg bomb equivalents (i.e.: convertible to six 250kg PGMs) on a multi-ejector rack in the place of one KD-88. That's six targets you can engage in one sortie compared to one target in one sortie. The cost is that you have to get closer to your target with the 250kg unpowered PGM versus one KD-88.
You are trading range of the munition for engaging many more targets.
.... Also, I'm pretty sure C-704 is not in PLA service.