Sulfate of Potash August 14, 2020California, Market Watch, Pacific N.W., Specialty, Sulfate of Potash, U.S. Exports, U.S. Importsmickeybarb@charter.net U.S. Imports: SOP imports were up 37 percent for theThis content is restricted to site members. If you are an existing user, please log in. If you would like to Subscribe please go to the 'Subscribe' area from the main menu.