- Tyes of metal we can work - Zinc alloy, copper, brass, iron, aluminum, stainless iron, tin, pewter, sterling silver. - Types of metal graving - Die cast, die struck, photo etched, plate, spray paint, core pulling, sandblasting, 3D - Types of coloring process - Printing, soft enamel, hard enamel, glitter, epoxy, clear glaze, rhinestone, glow in the dark. - Our quality certificates SGS certificates for raw material, CMYK INK and tension test.