美国贸易代表署根据301调查结果对中国商品加征12.5%的关税[1]，导致美国对中国商品的实际关税水平达到22.2%，较此前增加1.4个百分点[1]。这一新关税于美东时间4月24日凌晨12时1分生效，替代了川普此前实施的10%临时性关税[1]。
中国商务部对此表示，美方曾在经贸磋商中明确承诺替代加征关税不超过20%[1]，而当前美方的实际举措违反了该承诺[1]。中方指出，对美第一轮芬太尼关税和对等关税的反制措施仍然保持有效[1]。商务部表示将全面评估美方后续举措，并保留采取必要措施的权利[1]。
The U.S. Trade Representative's Office has imposed an additional 12.5% tariff on Chinese goods following a 301 investigation, bringing the effective tariff rate on Chinese merchandise to 22.2%, an increase of 1.4 percentage points from previous levels [1]. The new tariff took effect at 12:01 a.m. Eastern Time on April 24, replacing President Trump's temporary 10% tariff that had been in place [1].
China's Ministry of Commerce responded by stating that the United States had explicitly committed during trade negotiations to keep substitute tariffs at no more than 20%, a pledge the ministry characterized as now violated [1]. The ministry announced it would conduct a comprehensive assessment of Washington's subsequent actions while reserving the right to take necessary countermeasures [1]. China's retaliatory measures from the first round of fentanyl tariffs and reciprocal tariffs against the United States remain in effect [1]. The escalation comes against a backdrop of elevated trade tensions, with U.S. tariffs on Chinese goods having previously reached as high as 145% last year [1].