Real size import to snapmaker is not equal to the stl of zbrush

hi everyone i am trying to import the actual stl size that i export from zbrush at 25mm deep and 17mm high and 20mm wide and when i import the stl to snapmaker, the stl object size is modified and is bigger than the ideal size. What is the problem with snapmaker because it modifies the size, it already lost a lot of pla material.

Sounds like a z-brush setting problem.
Luban is bad about importing other files for laser and cnc but usually doesn’t with STL’s. (At least not in my experience)
There is tab to scale the size of your object and the dimensions show up in the bottom right of the workspace.