In the globe, there are many restrictions on levels of curtain elements allowed in consumer goods. These restrictions are enforces as what we know to be ROHS Directive (Restriction of Hazardou Substances) and the CPSIA (Consumer Product Safety Improvement Act of 2008). The main elements that are restricted are Lead (Pb), Mercury (Hg), Cadmium (Cd), Hexavalent chromium (Cr6+), Polybrominated biphenyls (PBB) and Polybrominated diphenyl ether (PBDE).
