J10a lgb

Does J10A only ever use GB250/GB500? Any evidence of use of other laser guided bombs or improved GB500 with potentially IOG?

You see the issues? there is a GB-1000 issue.
and there is a GB-500B with IOG and other improvement. I’m even not sure if it’s totally another new bomb than a improved GB-500, because I can’t find a image.
GB-500 is the first generation of Chinese guided bombs, copy from USSR KAB-500L. you can’t just develop 250kg and 1000kg LGB but jump over 500kg, isn’t it?

Not exactly cause if they just get the Russian ones (Su30 probably used them) and then made their own 1000kg without needing to make 500kg. I get the point though.
I am not sure that GB500B has any obvious change in outlook as there seem to be none, or simply it is non existent as we have seen all too many times PLA improve something and no change in name, such as J11A MLU.