The Globally Harmonized System of Classification and Labeling of Chemicals or GHS is an internationally agreed upon system set to replace the various different classification and labeling standards used in different countries. The GHS will use consistent criteria for classification and labeling on a global level. Its development began at the United Nations Rio Conference in 1992, when the International Labour Organization (ILO), the Organisation for Economic Co-operation and Development (OECD), and various governments and stakeholders came together at the United Nations. It supersedes the relevant European Union and United States standards. The European Union has implemented the United Nations' GHS into EU law as the CLP Regulation.