Copper

Copper beads have been excavated in northern Iraq and which are more than ten thousand years old and presumably made from native copper, nuggets of which can sometimes be found. Copper was widely used in the ancient world as bronze, its alloy with tin, which was used to make cutlery, coins, and tools. In China it was used for bells. Copper is not difficult to extract from it ores, but mineable deposits were relatively rare. Some, such as the copper mine at Falun,Sweden, date from the 1200s, were the source of great wealth. One way to extract the metal was to roast the sulfide ore then leach out the copper sulfate that was formed, with water. This was then trickled over scrap iron on the surface of which the copper deposited, forming a flaky layer that was easily removed.The products which our company can trade in this field are as follows :