promotion metal keyring Material: zinc alloy,iron,brass Plating: gold and nickel Different design in available metal keyring,Alloy keychain ,Zinc Alloy keychain,1) Materials: Brass, zinc alloy, stainless steel or iron depend on customer's requirements2) Size: Different size in available3) Processing: Stamped brass and iron, such as die casting, spin casting also can be available. Mainly depend on ...