difference between china/new zealand EQ iron heads

I have no knowledge if this is the case or not, but I find it hard to believe that there is more than one foundry in China casting these things up.
I think wherever you buy them, they’re more or less the same.

Although....... that being said, Moparofficial did end up getting two different castings when he bought a pair from Speedmaster.

Nonetheless, I think if there was a version from China that was truly the “equivalent” to the NZ EQ....... that it would be common knowledge by now.