two Chinese exporters have begun limiting shipments to Japanese companies of heavy rare earth elements such as dysprosium as well as magnets containing these strategic materials. Industry sources Nikkei talked to claimed that the tightening of export inspections had in fact started even before the announcement. Chinese authorities are rigorously examining who the final users are and how rare earth-related products will be used. This has made it difficult to issue export licenses, except in cases where the products are processed in Japan and re-exported to the U.S., or when they are used by certain Japanese companies.