what strings has the epiphone's basses?

[peladox]

i got a epiphone thunderbird, with a strings thack are so good that i wanto to get them again, do you know what brand is it, i think that is ghs, if somebody knows please tell meee!

[Thurisarz]

Epiphone has there own brand of strings which i think, correct me, they get from a factory. But the store could have changed them to something else.