What the production of copper
if some good western lead brass material requirements may be made of copper, if you ask the ordinary brass, it must be made of copper. Every other kind of copper has its own field, you ask too wide.
This problem is too broad, first of all what you are referring to copper, brass rods? Lead brass (this up)? Tin bronze bars? So there are many, but I guess you ask is yellow copper, copper is generally lead to the recovery of copper and copper powder,
This problem is too broad, first of all what you are referring to copper, brass rods? Lead brass (this up)? Tin bronze bars? So there are many, but I guess you ask is yellow copper, copper is generally lead to the recovery of copper and copper powder, if some good western lead brass material requirements may be made of copper, if you ask the ordinary brass, it must be made of copper. Every other kind of copper has its own field, you ask too wide.
