“homogeneous material’ means one material of uniform composition throughout or a material, consisting of a combination of materials, that cannot be disjointed or separated into different materials by mechanical actions such as unscrewing, cutting, crushing, grinding and abrasive processes;”
最重要的一点要以客户的标准为首位，如有些客户定义的限值比ROHS要严很多，如ROHS中CD为0.01%，而客户可能定的标准是0.005%。 对于豁免，客户理解也不同，有的客户部接受“Copper alloy containing up to 4 % lead by weight”“Lead as an alloying element in steel for machining purposes and in galvanised steel containing up to 0,35 % lead by weight”，所以理解客户标准很重要。
当然，互相参与ROHS/WEEE等指令法规版块话题讨论，也是学习的一种方法。
参考文献： 2011/65/EU:on the restriction of the use of certain hazardous substances in electrical and electronic equipment
2012/19/EU:on waste electrical and electronic equipment (WEEE)
2006/66/EC:on batteries and accumulators and waste batteries and accumulators
And repealing Directive
94/62/EC:on packaging and packaging waste
(EC) NO 1907/2006:Evaluation, Authorisation and Restriction of Chemicals
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