Seekers,
I ordered several seeeduino Xiao months ago, with no need at the time to break them open. When I did recently, I saw that the stickers they included look like they came out of a dot matrix printer (see attached). Helpful, but not legible. And certainly nothing like the stickers that you saw in the promotional material.
I wrote a simple email to them and within a day support was nice enough to send me the PDF that they use to print them, and as you'd expect they are perfect. So any degradation if you print these is a result of your printer, not the vector source material. 
I hope this PDF is helpful to those using the module, and I'm sure they are happy that I'm sharing it with the community.
327132272_Seeeduino_Femto_贴纸_V2.0；80g铜板不干胶贴纸_哑膜-35x34mm-规格书_(2).pdf (2.0 MB)
Pat