In addition, printed circuit boards
contain environmentally harmful materials, such as lead (Pb), mercury
(Hg), cadmium (Cd), bromine (Br), and beryllium (Be) (Sum,
1991; Bernardes et al., 1997; Tenório et al., 1997).
In addition, printed circuit boardscontain environmentally harmful materials, such as lead (Pb), mercury(Hg), cadmium (Cd), bromine (Br), and beryllium (Be) (Sum,1991; Bernardes et al., 1997; Tenório et al., 1997).
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