May 22 (Asia Today) -- POSCO International said Friday it plans to enter the U.S. rare earth separation, refining and permanent magnet business through a joint investment with ReElement Technologies. The South Korean trading company said it signed an agreement with the U.S. firm to pursue a joint venture for rare earth separation and refining production in the United States. The signing ceremony was held in Washington, D.C., with POSCO International CEO Lee Kye-in, ReElement Technologies CEO