Group 1 - The Trump administration has expanded the scope of tariffs on steel and aluminum imports to include hundreds of derivative products, with a 50% tariff rate effective from August 18 [1] - The U.S. Department of Commerce announced that 407 product codes have been added to the tariff list due to their steel and aluminum content [1] - The average trade-weighted tariff rate for the U.S. has risen significantly to 20.11% as of August 7, compared to 2.44% at the beginning of the year [3] Group 2 - The simple average tariff rate for all U.S. goods has increased from 2.08% at the start of the year to 17.39% as of August 7 [4] - The affected global trade volume has surged from $288.46 billion at the beginning of the year to $2.747 trillion currently [4] - The average effective tariff rate has reached 18.6%, the highest level since 1933, according to a report from Yale University's budget laboratory [4] Group 3 - Experts from Japan have criticized the U.S. government's approach to tariff negotiations as a serious infringement on the interests of trade partners and a significant threat to global economic development [6] - The Swiss Federal Council has not considered retaliatory measures against the U.S. tariff increases, citing potential additional costs to the Swiss economy [6] - Mexico and Canada are discussing collaborative strategies to respond to U.S. tariff policies and enhance bilateral cooperation [6]

Core Viewpoint - The article discusses the expansion of tariffs on steel and aluminum imports by the Trump administration, which now includes hundreds of derivative products, indicating a significant shift in trade policy aimed at protecting domestic industries [1]. Group 1: Tariff Expansion Details - On August 15, the Trump administration announced a 50% tariff on a broader range of steel and aluminum products, adding 407 product codes to the tariff list [1]. - The expanded tariff list will take effect on August 18, with specific rates applicable to non-steel and aluminum components based on existing tariffs on certain countries [1]. - Previously, on June 3, the administration had raised tariffs on imported steel and aluminum from 25% to 50%, effective from June 4, 2025 [1].

Core Points - The Trump administration announced an expansion of tariffs on steel and aluminum imports, increasing the tariff rate to 50% on hundreds of derivative products [1] - The U.S. Department of Commerce published a notice adding 407 product codes to the U.S. Harmonized Tariff Schedule, which will incur additional tariffs due to their steel and aluminum content [1] - The expanded tariff list will take effect on August 18, 2025, and the non-steel and aluminum components will be subject to the tariff rates imposed on specific goods from certain countries [1] Summary by Category Tariff Expansion - The Trump administration has expanded the scope of tariffs on steel and aluminum imports, now including hundreds of derivative products [1] - The tariff rate on imported steel and aluminum has been raised from 25% to 50% [1] Product Inclusion - A total of 407 product codes have been added to the U.S. Harmonized Tariff Schedule, which will be subject to additional tariffs due to their steel and aluminum content [1] - The announcement specifies that non-steel and aluminum components will follow the tariff rates applicable to specific countries [1] Implementation Timeline - The expanded tariff list is set to officially take effect on August 18, 2025 [1]