Chinese exports to Japan of the rare earth element yttrium, crucial for semiconductor manufacturing equipment, plummeted 98 percent between January and September from a year ago, according to Chinese data, as diplomatic ties remain soured.The numbers from China's customs come nearly a year since Japanese Prime Minister Sanae Takaichi made remarks about a potential Taiwan contingency that angered Beijing and led it to tighten the screws on Japan through measures such as export restrictions.Exports of yttrium for the nine-month period stood at just 18 tons compared to 887 tons the year before…READ FULL ARTICLE