Yunnan speckle copper is come from nonferrous metal kingdom of Yunnan province,which is well known and unique type copper alloy smelt product in the world.

• 云南斑铜在素有“有色金属王国”之称的云南诞生，是云南独特的铜合金冶炼技术产品，在世界上享有一定的知名度。