Copper, which is the most expensive, is the best copper wire2 brass (in fact, there are strict classification of three grades)3 copper (this is a very poor alloy, the main component is not copper)
Specifically, what is the reason why I can not tell you the price is so, copper is divided into many types
Copper price is belong to tax price, that is to say you do not have to pay taxes, in general, as long as not all outside the industrial production of copper are copper, copper, copper prices are analyzed according to the fineness and specific components of the alloy, but not simply.
