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China’s export curbs on critical metals have disrupted supplies of micro drill bits made mainly from tungsten carbide, Nikkei Asia reports, citing sources. The bits are used to make printed circuit boards and chip substrates.
Why it mattersThey are small tools with an outsized place in electronics manufacturing. The report points to a supply-chain effect reaching beyond the metals themselves, though it does not establish how widespread or long-lasting the disruption is.
Discuss: How should chipmakers respond to a supply squeeze on specialist materials: build more stock, or invest in alternative sources?
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