中国对美国留的后手见效，特朗普束手无策，只渴望尽快与中方通话

Group 1 - The article discusses the strategic leverage China holds over the U.S. in the ongoing trade negotiations, particularly through its control of rare earth materials, which are critical for various industries, including technology and defense [1][3][6] - The U.S. is facing significant pressure as over 200 American companies have applied for tariff exemptions, indicating the adverse impact of tariffs on domestic industries [4][6] - The current situation is characterized by a direct exchange of bargaining chips, with China's rare earth resources corresponding to U.S. demands for tariff cancellations and the lifting of technology bans [6][9] Group 2 - The article highlights the irony of the U.S. administration's position, as it attempts to maintain a hardline stance on tariffs while simultaneously needing China's rare earth supplies [4][6] - China's dominance in the rare earth market, accounting for 90% of global production of neodymium-iron-boron magnets, is forcing U.S. companies to rethink their supply chains [6][9] - The ongoing negotiations are framed as a critical moment for both nations, with the potential for a breakdown in talks looming despite a temporary agreement on tariffs [9]