Asia's leading graphite producer, China, will restrict exports of a crucial battery material.

As a measure to safeguard national security, China announced on Friday that export permits will be necessary for certain graphite products. In response to challenges over its global manufacturing dominance, China unexpectedly endeavoured to exert control over a vital mineral supply.

China is the leading exporter and producer of graphite in the globe. Additionally, it processes over ninety percent of the global graphite supply into th....