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How much do you know about copper? Here are some basics: it’s electrically conductive, ملائم, 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, بار, plates and sheet stock. اسے استعمال کیا جا سکتا ہے۔… مزید پڑھیں »