Copper is the metal of choice for electric and mechanical devices.
Copper wire is used to make electrical equipment such as transformers and switches, and is also used in other industries such as water purification, solar panels, batteries and electronic components.
Copper is mined and refined from ore in central and western China.
The metal has a weight of about 3.3 grams per cubic meter and can be used for electrical equipment.
The price of copper in China is around $US5.80 per pound.
The price of Copper and Copper Wire has also fluctuated over time.
Copper is used in most industrial applications, but it has been known to be mined at lower yields than copper mined from the United States.
It is also mined from South America.