Shandong's Environmental Protection Bureau said it would cut pig iron production capacity by 600,000 tonnes and crude steel by 3.55 million tonnes by the end of this year.
Earlier this year, the company said it would aim to produce up to 15 percent of global antimony output, used primarily to make fire retardants and batteries.
Trump has reportedly rejected a plan to levy tariffs of 10 percent on an additional $200 billion of imports from China and ordered aides to prepare a proposal for tariffs at the higher rate of 25 percent.
U.S. Steel Corp. fell the most among peers as a mixed bag of quarterly results left investors wondering if they would see any real benefit from trade policies that have pushed up U.S. prices of the metal.