Copper is industrial pure copper. Because of its rose red color and purple color after the oxide film is formed on the surface, it is generally called red copper, also known as red copper. It is copper containing a certain amount of oxygen, so it is also called oxygen-containing copper, and sometimes it can also be regarded as a copper alloy. Copper is a relatively pure type of copper, which can generally be considered as pure copper. It has better conductivity and plasticity, but poorer strength and hardness.