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China metal export curbs disrupt tungsten carbide drill bits, Nikkei reports
Techmeme, citing Cheng Ting-Fang of Nikkei Asia, said China's export curbs on critical metals have disrupted supplies of tungsten carbide micro drill bits used in printed circuit boards and chip substrates.
Techmeme on Thursday summarized a Nikkei Asia report by Cheng Ting-Fang saying China's export curbs on critical metals have disrupted supplies of micro drill bits used to make printed circuit boards and chip substrates1.
The Techmeme item said the bits are made mainly from tungsten carbide1.
Nikkei Asia's publicly visible lede, as listed by Techmeme, described the bits as little-known but critical components in the AI chip supply chain and tied the disruption to Chinese export controls on critical metals1.
Techmeme did not publish company names, price changes, or a response from Chinese authorities in the item reviewed here1. Details beyond that summary sit behind Nikkei Asia's paywall and were not independently verified.