polysilicon factories ⁠from growing Chinese ambitions in the chip supply chain. The proclamation by U.S. President ⁠Donald Trump is expected to include minimum import prices on polysilicon, wafers, cells and modules, or ​solar panels, ​and a 15% ​tariff on the polysilicon ‌derivatives, the four sources said. The administration's plan to pursue a hybrid system combining a minimum import price with tariffs was first reported by Reuters. The Commerce Department and the White House did not immediately respond to requests ​for comment. (Reporting by ‌Nichola Groom in Los Angeles; Alexandra Alper ​in Washington and Jarrett Renshaw in Washington; ​Editing by Lisa Shumaker)