Copper No. 1 kinds of alloy Wire cooper without lines,
containing impurity, contain Copper quantity for *9.9% (minimum
content *9%).
Shall not contain excessive lead and tin change of copper wire,
welding of copper, brass and bronze line, excessive oil,
prohibition and nonmetal,crisp, burning line, utterly margin of
fine copper and excessive sexual yarn. Need appropriate means to
remove dirt. Birch
