... Stamp (die struck) For this manufacturing process, we can use the following materials: brass, copper, iron, aluminum ... print & Silk print) For this manufacturing process, we can use the materials: iron, brass, zinc alloy, aluminum ... shiny, and feel smooth. 2). Plating --- We can plate the metal products with gold, silver, nickel, ... Here are some of our other cell phone charm/pendants for your reference: