美国总统特朗普于当地时间8月11日签署了一项旨在将部分对华关税再次延期90天的总统 令。美国多家主流媒体报道了这一消息。美国把目前累计为30％的额外关税税率维持到11月 上旬，并继续与中国进行贸易磋商。在签署总统令之前，特朗普还向中国施压，要求中国进 口更多的美国产大豆。 中美在7月底的第三次部长级会谈中，大致上就关税暂停期限再次延长90天达成协议，但一直在等待特 朗普的最终批准。此次特朗普终于在期限临近之时作出了最终批准。特朗普还要求中国进口更多的美国 产大豆…… 根据中美双方5月在瑞士举行的部长级磋商达成的协议，双方各自把针对对方的额外关税下调 了115％。其中，相当于对等关税"附加税率"的24％部分暂停90天至8月12日凌晨0时1分 （北京时间中午0时1分），并继续与中国进行谈判。中国也同样将24％的对美额外关税暂停 90天。 中美两国在7月底于瑞典举行的第三次部长级会谈中，大致上就关税暂停期限再次延长90天达 成协议，但一直在等待特朗普的最终批准。此次特朗普终于在关税附加税率暂停期限临近之 时作出了最终批准。 日经中文网 https://cn.nikkei.com 另一方面，特朗普10日通过自己的社交 ...

Core Viewpoint - The article discusses the U.S. government's restrictions on Huawei's AI semiconductor products, particularly the Ascend series, in an effort to curb China's AI technology development [1][2]. Group 1: U.S. Government Actions - The U.S. Department of Commerce's Bureau of Industry and Security (BIS) issued guidelines stating that using Huawei's Ascend AI semiconductors could violate U.S. export control regulations [1]. - The guidelines specifically target the Ascend series, including models 910B, 910C, and 910D, which are seen as alternatives to NVIDIA products that are restricted from export to China [1][2]. - The U.S. government warns that companies using Ascend semiconductors without permission may face penalties such as fines or revocation of export licenses [1]. Group 2: Product Development and Market Impact - The Ascend 910B is currently available, while the 910C is expected to begin mass production and shipping in May [1]. - The 910D is still in the research and development phase, with initial samples expected to be delivered to Chinese customers after late May [1]. - The U.S. government not only restricts the use of Ascend semiconductors but also limits access to data necessary for their production and development [1]. Group 3: Broader Context of U.S.-China Relations - The article notes that the Biden administration has continued the trend of restricting semiconductor exports to China, initiated during the Trump administration [2][3]. - The Trump administration is expected to further strengthen restrictions on Huawei's semiconductors while also revoking Biden's proposed measures to enhance export controls on AI semiconductors [3].