... Engraving with colours. 5.Suitable for Promotional gifts Fine Copper.999 silver bullion Description:Production Type:Coin, medal, ... , badge, insignia, etc. Material: pure gold, pure silver, copper, bronze, brass, zinc alloy, etc. Size: All sizes are ... Process: die casting, engraved, embossed, painted, transfer printing, plated, welding, etc. Plating: gold, antique gold, silver, antique silver, cooper ...