The process is called Direct Output to Substrate. It is a digital printing process that can also be done to your acrylic, styrene, Epvc, or PVC.
And I would recommend that you have your sign guy cut the holes, print it subsurface on 1/8" or 3/16" non glare acrylic sheet and then back spray with a polyurethane acrylic enamel or plastic plus screen ink.
It will look very professional, resist scratching,
and look good for a real long time. Your lifetime anyway.
Using polycarbonate is the wrong product for this application. It will sag (cold flow) and your fine line tape will eventually peel due to the plasticizers in it. And unless you abrade it with Scotchbrite ( forget sanding polycarbonate ) the paint will also not adhere well either.
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