The United States’s offer to cut steel tariffs on the United Kingdom will only come into effect once the UK has met requirements relating to the ownership of certain plants, a condition that raises further doubts about the Chinese firm Jingye Group’s possession of British Steel.

Final details are under wraps but Trump promised the deal provides billions of dollars in access for U.S. agricultural products like beef and ethanol.

The agreement to lift the 25 percent duty on steel exported to the United States provided some relief for struggling businesses, but uncertainties for the industry remain.