Pure copper, as the name suggests, is the copper with the highest copper content, because the color purple red is also known as red copper, the main component is copper plus silver, the content is 99.5 ~ 99.95%; Main impurity elements: phosphorus, bismuth, antimony, arsenic, iron, nickel, lead, tin, sulfur, zinc, oxygen, etc. Used for making conductive equipment, high - grade copper alloy, copper - based alloy