China Hits Back at US Polysilicon Tariff as AI-Driven Exports Surge

President Trump ordered a 15% tariff on imported polysilicon — a key material for solar panels and semiconductors — starting December 4, with minimum price floors across the solar and chip supply chain. China's foreign ministry accused the US of "overstretching national security and abusing state power." The rebuke comes as China's exports rose 23.9% year-on-year in July, fueled by AI-related shipments.