1) Material: Zinc-alloy, Aluminum, stainless steel, copper, bronze, brass,, or according to your requests.2) Size:meet the customized 3) process: Stamping,Die-cast, ,Photo etching,brushed finish/silk printing,offet printing,soft enamel/pearl enamel/glitter/epoxy/4) Backside: sticker/safety pin / butterfly clutch/sandy finishing/polishing and..