翻议RoHS Declaration里面的REMARK

*2: Because the lead (Ex. lead 0.35wt% or less as iron alloy), which is exempted from application by the RoHS Directive, is applicable as an alloy content, the Directive is not applied to the lead as an impurity.

RoHS Declaration里面的一个备注,帮忙看看怎么理解!
谢谢!