China tightened indium export checks, raising concerns among global buyers

Some overseas buyers said Chinese customs is asking for more detailed end-user information for indium products, with some approvals stretching from same-day processing to several days. China produces nearly 70% of the world’s indium, while indium phosphide is important for high-speed optical communication chips used in next-generation AI data centers. No formal export halt has been reported, but buyers are already reassessing supply risk.