After the discovery of stone and mud, a human turned to metals for their applications, and among all metals, copper was the first metal to be discovered and used earlier than the rest.

The use of the ancient historical evidence route dates back to 9500 BC and was used until the 5th millennium BC, i.e. the discovery of pure copper smelting. And the cold hammer was used to be shape it. Based on the available evidence, Iran is a pioneer in the discovery and smelting of copper in ancient history. It was the first copper smelting furnace in Qazvin and the city of Sagzabad. Most of the taste and verve of the art of metal working dates back to the Seljuk period that Zanjan, Isfahan, Khorasan, Mosul, Hamedan and Rey were considered as one of the most important metalworking areas.