sentences:  Much later, in 1966, the use of acid chloride baths improved the brightness even further.The latest modern development occurred in the 1980s, with the new generation of alkaline, cyanide-free zinc.Recent European Union directives (ELV/RoHS/WEEE) prohibit automotive, other original equipment manufacturers (OEM) and electrical and electronic equipment manufacturers from using hexavalent chromium (CrVI).