Move to raise levy on goods made with polysilicon aims to protect domestic US supply chains from China, the major producer

Donald Trump has ordered a new 15% tariff on imported products made of polysilicon, an important ingredient in microchip manufacturing that is primarily produced by China.

The new tariff, which will take effect on 4 December, is aimed at supporting US chip and solar panel supply chains to compete with Beijing on artificial intelligence and energy.

The executive order signed by the president on Thursday evening said: “The plan of action in ⁠this proclamation will, among other things, help ensure the commercial viability of United States production of polysilicon and its derivatives that is necessary to meet United States economic and national security requirements.”