Engraving logos, initials and numbers, makes it easier for you to identify Magazine pads. 
Just pick your color and add max 10 characters that you want to have engraved. There's also a second option - upload your vector logo in the correct format, for example .DXF, .AI,... Check out the video - how it's made! https://www.youtube.com/watch?v=I5__POQ_qH4