The U.S. Department of Commerce has halted equipment shipments to Hua Hong, affecting Huawei's plans to diversify its 7nm chip production. Hua Hong had begun 7nm R&D at its Shanghai facility, aiming for a production capacity of thousands of wafers per month by late 2026. Huawei intended to shift some AI chip production from SMIC to Hua Hong. The U.S. action, using the "is-informed" letter mechanism, could cost American suppliers billions in sales, prompting Hua Hong to consider alternative equipment sources.