OBS_VALUE: By virtue of Intercantonal Agreement on sale of salt in Switzerland and Article 94(4) of the Swiss Federal Constitution, the distribution of salt is a cantonal monopoly right. The Canton of Zurich acceeded to the Agreement with the following law: https://www.zh.ch/de/politik-staat/gesetze-beschluesse/gesetzessammlung/zhlex-ls/erlass-691-1974_09_22-1975_10_01-055.htmlDistribution of salt at retail level is not prohibited, however affected by the cantonal monopoly right of salt distribution.Note that the alcohol monopoly existed until 2018.