Sources said some Chinese rare earth suppliers are refusing to ship materials to U.S. customers, fearing possible retaliation from Beijing, Reuters reported Friday.
The reluctance highlights continuing uncertainty over U.S. access to critical minerals ahead of Chinese President Xi Jinping's planned Sept. 24 visit to Washington, according to the report.
Several suppliers halted shipments after China sanctioned the Responsible Business Alliance in August, raising concerns over compliance with its mineral-sourcing rules and potential penalties from Chinese authorities, Reuters wrote.
was unable to reach China's Ministry of Commerce for comment.
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