China Condemns US Polysilicon Tariff as Its AI-Driven Exports Surge 23.9%

President Trump ordered a 15% tariff on imported polysilicon effective 4 December, with minimum price floors across the solar and chip supply chain. China's foreign ministry accused the US of "overstretching the concept of national security and abusing state power." The criticism coincides with China's exports rising 23.9% year-on-year in July, driven by AI-related shipments.