Process: 1) Cloisonn/Hard Enamel 2) Imitation Cloisonn/Synthetic Enamel 3) Soft Enamel 4) Die casting Material: 1) Copper 2) Iron 3) Zinc-alloy upon process Thickness: Range from 0.8mm C3.0MM (Can be adjust per process and customers request) Plating: Gold/Silver/Nickel / Antique Gold/Silver/Black Nickel. Each in a opp bag.