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Pure copper reachs basic knowledge of copper
From;    Author:Stand originally
Pure copper

① advocate composition adds silver for copper, content is 99.7 ~ 99.95% ;
Element of ② main impurity: Phosphor, bismuth, antimonial, arsenic, iron, nickel, lead, stannum, sulfur, zinc, oxygen;
③ is used at making alloy of electric equipment, advanced copper alloy, copper radical.

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