... 2)lead free and nickel free 3)Good for p stainless steel metal keyring 1>Material: zinc alloy,brass,iron,AL,stianless ... antique siler, antique gold etc4>Processing: die casting,stamping,die cutting, polishing, plating etc, color as per customer's request5> ... Logo method: droping oils,offset printing, screen printing, laser engraving, embossed etc6:>Advantage: Nickel free & lead free7>MOQ: ...