ABS is a special plastic for engraving and comes in a variety of colors.
PMMA is a plastic material similar to plexiglass available on gold and silver with black engraving.
Aluminum alloy is available in several colors with the color of the engraving being silver.
ABS: 0.5mm, 1.5mm
BRASS: 1mm (other thicknesses on request)
ALUMINUM: 1mm (other thicknesses on request)