metal key chain with color injection, perfect as promotion gift,we are professional OEM supplier,Disney,Coca cola source from us key chain 1. Material: plastic  2. Size:60*30mm(custom size available) 3. product process: 1)mold making, to make your design on the mold surface, 2) injection, material injected into the mold 3) elimination, on completion of injection, unwanted material is eliminated to reveal the completed design 4) polishing by hand, to make the products smooth 5) plating, various plating color can be processed, usually gold or silver and other anti color 6) coloring, colors filled in by hand with injection. 7) clearance of the unwanted color 8) inspection & packing, all items are strictly inspected before packing.