The U.S. Trade Representative’s said that many of the tariffs, including a 100% duty on Chinese EVs, 50% on solar cells and 25% on steel, aluminum, EV batteries and key minerals, would go into effect on Sept. 27.

The USTR determination published on Friday but first reviewed by Reuters, showed a 50% duty on Chinese semiconductors, which now include two new categories - polysilicon used in solar panels and silicon wafers - are due to start in 2025.

Adjustments to the punitive “Section 301” tariffs on $18 billion worth of goods announced in May by President Joe Biden were minimal and disregarded auto industry pleas for lower tariffs on graphite and critical minerals needed for EV battery production because they are still too dependent on Chinese supplies.