If you are downloading these files as a .zip archive, you are receiving a compressed "container" that bundles one or more .e7v files into a single, smaller package.
They may represent highly specific, compressed wavelet files or proprietary application data.
E7V File Extension: What Is It & How To Open It? - Solvusoft
Bundling these files into a ZIP archive makes them easier to transfer over the internet and reduces the storage space they occupy. Security and Safety Warnings
Some versions are used by electronic structure software to store data on 3-dimensional grids.
