券商中国·2025-05-30 23:20Group 1 - The U.S. President announced an increase in import tariffs on steel from 25% to 50% to protect the domestic steel industry from foreign competition [1] - Following the tariff announcement, U.S. steel companies saw significant stock price increases, with Cleveland-Cliffs Inc. rising over 26% in after-hours trading [1] - The new tariff level supports a previously promised cooperation agreement between U.S. Steel and Japan's Nippon Steel, addressing concerns from the United Steelworkers union about potential job losses [1] Group 2 - Approximately 17% of steel used in the U.S. is imported, primarily from Canada, Brazil, and Mexico, which may lead to increased costs for construction companies and new housing projects [2] - The President also mandated that U.S. automakers, including Tesla, must produce entire vehicles and all parts domestically, rather than overseas, to address concerns about foreign production [2]