... 2.size: any size 3.OEM all welcom 4.key chain YinTin main products are: metal badges, commemorative coins, commemorative ... and boxes, etc. All products are high-quality gifts. key chain specifications: 1)Available material: Copper, brass, bronze, zinc alloy, ... )Process: photo etched, stamping, hydraulic,printing, die-casting, carved, enamel,epoxy resin casting,coloring and PVC5)Thickness: 2mm,3mm,4mm,4 ...