iYaya: Copper/Stainless steel Size: there are three kinds of commonly used, 85mm*54mm, 80mm*50mm, 76mm*44mm, also can produce other specifications according to customer requirements. Vavaku: common thickness is 0.35mm, can also do 0.25mm, 0.30mm and 0.40mm, kei na so tale. Roka: golden, silver, rose, kei na so tale. Process: the corrosion process/plating process Decorative pattern: customer since Packing: PP bag packaging independently