Is there any truth to the statement that Chinese tile has wavy/uneven edges?

[knowitall]

I am looking for floor tile. While finding a piece that I thought was nice, and very reasonably priced, I was told that Chinese manufacturers produce irregular tile and some of the lines are not perfectly straight.

That doesn't make much sense to me and I can't seem to find any source to confirm this claim, I would appreciate any credible opinions on the matter.