The properties of copper bars produced by ordinary continuous casting copper bars can not reach the standard. The copper bars produced by extrusion process have good tensile strength, high hardness and high straightness. Generally, the amount of precision copper parts such as auto parts, medical parts and electrical accessories is relatively large.

Brass bar is a bar shaped object made of copper and zinc alloy, named after its yellow color. Brass with copper content of 56%~68% has a melting point of 934~967 degrees. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, ship parts, gun casings, etc.