The US has agreed to pause new tariffs on Chinese goods in exchange for China signing a deal containing a number of commitments, including $200 billion of new imports from the US.
The list of materials covered by this deal
includes a number of minor metals and rare earths.
Media reports that China has agreed to buy specifically yttrium and lanthanum seem based on a misunderstanding of the way exports are classified by the World Customs Organization.
Alongside a wide list of other materials, the trade agreement covers all goods exported under customs codes 2846, which includes all rare earth compounds, and 2805, which includes all rare earth metals, as well as mercury, beryllium, magnesium, calcium, strontium, barium...