I've got a funny feeling these are Japanese, rather than Chinese.
But they're not "fakes" - nobody is claiming they are anything other than what they are.

They may be designed to decieve, but there are no marks or labels claiming they are anything.
If these vases are not one of the standard Holmegaard sizes, and are not one of the ones made under license by Cascade in England, then they are these "lookalikes".