How much do you know about copper? Here are some basics: it’s electrically conductive, 可锻铸铁, and corrosion-resistant. It’s used in several industries, including manufacturing and construction, in things such as circuit boards and roofing sheets. Copper can often be found in the form of blanks, flats, 酒吧, plates and sheet stock. It can be used… 继续阅读 »
