President Donald Trump’s administration will have to make significant concessions to get China to agree to resume rare earth metals’ exports to the US, which were suspended in April in response to US tariffs on China, The New York Times reports.

Delegations from the two countries on Monday will begin the second round of trade talks in London.

One of the main topics of discussion will be the restrictions on the export of rare earth metals and magnets introduced by China on April 14 against the US. China currently controls about 99 percent of the supply of some types of such rare earth metals, which play a key role in the automotive, semiconductor, and aerospace industries.

According to Kevin Hassett, Director of the National Economic Council of the White House, the objective of their talks with China is to return the supply amount to pre-restriction levels.

Beijing is demanding the easing of US export restrictions and the lifting of a number of tariffs imposed on China by the Trump administration.