<http://schema.org/description>
"Replacements for hexavalent chromium in both plating and passivation processes are becoming necessary because of the End-of-Life Directive from the European Union that prohibits the use of hexavalent chromium and/or regulates the quantities used."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pfonline.com/articles/perspectives-the-future-of-hex-chrome>