High-pure copper mainly comes from copper electrorefining. 高純銅主要來源於銅的電解精鍊。
Bronze has a higher strength than pure copper, is easily cast, has improved machinability, and is very easily joined by soldering or brazing. 青銅比純銅強度更高，易於鑄造，具有改良的機械加工性，易於採用焊接或銅焊進行連接。
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