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Why is Indium Phosphide Crucial for AI Chips and Why China Wants Supreme Control?

Indium phosphide has become a flashpoint in the US–China technology contest: China controls most of the world's indium supply, while the wafers themselves are made largely by firms in Japan and the United States. (Image: AI FrontPage / representational)

Indium phosphide, a compound semiconductor made from indium and phosphorus, has become a critical enabler of the optical chips that move data inside AI data centres.