要点一览：商务部多措并举维护公平贸易

Group 1: Measures Against U.S. Companies - The U.S. Department of Commerce has added three companies to the unreliable entity list, prohibiting them from engaging in import and export activities related to China and from making new investments in China [1] - Three U.S. entities have been placed on the export control list, prohibiting the export of dual-use items to these companies, and all ongoing related export activities must cease immediately [1] Group 2: Trade Relief and Barrier Investigations - A preliminary anti-dumping investigation has been initiated against imported pecans from Mexico and the U.S., as evidence suggests dumping practices that harm domestic prices and cause substantial damage [2] - A trade barrier investigation has been launched regarding Mexico's proposed increase in import tariffs on products from non-free trade partners, which could severely impact Chinese enterprises' trade and investment interests [2] Group 3: Clarification of Multilateral and Bilateral Trade Positions - China has submitted a position paper to the WTO stating it does not seek new special and differential treatment in current and future negotiations, aiming to promote WTO reform and support global development initiatives [3] - The Chinese government urges the U.S. to eliminate unreasonable tariffs on soybean trade to create favorable conditions for expanding bilateral trade and enhancing global economic stability [3] - The Chinese government has indicated that the main obstacle to normal Sino-U.S. economic cooperation is unilateral restrictions imposed by the U.S., calling for mutual efforts to create favorable conditions for stable and sustainable development of Sino-U.S. economic relations [3]