... soft enamel 3)Size: 20mm 4)Plating: gold High quality button badge pin back :- Process:Various depending on the design and ... enamel, Die casting, Spin Casting, Etching, Offset printing, Laser/ Silk screen printing, etc) - Material: Brass, zinc alloy, tin, iron, ... - Attachment: Various - Color reference:Pantone color chart - Minimum order quality: No MOQ limit, we accept small orders. - Packing: Each ...