if you change the extension from .emz to .gz .. does it open in archive manager ?
If so .. drag it's contents out of the archive and see if it will open in something else .. maybe LibreOffice.
If you're still stuck, and it's not something personal .. would you like to email it to me and I'll see what I can come up with ?
A little digging around suggests EMZ is a compressed Windows enhanced meta-file .. so if you change its extension, archive manager should be able to unpack it .. inside is an EMF file (though it may not actually have an extension) .. and according to this:http://linuxsleuthing.blogspot.co.uk/2011/11/libreoffice-unlikely-image-viewer.html
LibreOffice can read EMF files if they're dragged into a blank document.
I opened the Draw program (though Writer would have worked as well), and I dragged the EMF into the document window. Voila! I had a perfect representation of the document sent to the printer.
LibreOffice can save the image as a PDF for distribution, if required.