... Service Offered ; Design Service Offered ; Buyer Label Offered. collar pin, 1) Materials: Iron , brass , zinc alloy , gold , silver and so on .2 ... so on .5) Color Reference : (Pantone Color Chart) -- With soft enamel , hard enamel / cloisonne ,pad or screen printing , by paper sticker or epoxy ... , by sea or by DHL/TNT/UPS/EMS/...Express. collar pin