US trade officials are extending an exception of up to 25 percent import tariffs on some seafood products former US President Donald Trump tied to his trade war with China.

On Thursday, the Office of the US Trade Representative (USTR) announced it would extend its exemption from 25 percent import tariffs for Alaska sole and several crab products, including king, snow and Dungeness crab, through Dec. 31.

The measure will also apply to retroactive tariffs back to October of 2021.

The USTR imposed the tariffs in September of 2018 under the Trump Administration as part of an escalating trade war between the countries that totaled $360 billion (€328 billion) worth of products imported from China, according to the New York Times.

The news site also said Trump declined to extend the exclusions at the end of his term, a decision that angered many business leaders.

The tariffs on products exempted ranged from 7.5 percent to 25 percent, according to the news site.