... pin,customized design and logos are welcome.1) Material Iron ,brass, zinc alloy, gold, silver, brass ,iron ,stainless steel/iron ,Aluminum , ... 3) Design & Logo As your requested 4) Plating Nickel, anti-nickel, black nickel, brass, anti-brass, copper, anti-copper, gold, anti- ... Sedex,SGS9) Raw material and processing are all environmental protectionPackage:1 pc / opp bag250 pcs / big opp bag500 pcs / ...