A 15 percent tariff on polysilicon products could become the latest symptom of Washington's deepening obsession with technology containment against China, as the US administration continues to expand its China-targeted restrictions from raw materials to finished products, ranging from chips and AI to critical resources such as lithium battery scrap and tungsten.

The US signed a 15% polysilicon tariff as its trade deficit with China fell 32% in 2025, accelerating the biggest supply chain overhaul in

A 15 percent tariff on polysilicon products could become the latest symptom of Washington's deepening obsession with technology containment against China, as the US administration…