RoHS restricts the use of certain hazardous substances in electrical and electronic products (EEE products). The current list of restricted substances is found in Annex II of the Directive and includes four heavy metals (lead, mercury, cadmium, and hexavalent chromium) and two brominated flame retardants (polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE)).
The Directive mandates that EEE products must not contain more than 0.1% (except for cadmium which is limited to 0.01%) by weight of homogenous material of any of …