#美国加征关税 The United States' imposition of tariffs is a typical means of pursuing trade protectionism in recent years, often justified by claims of 'reducing trade deficits' and 'protecting domestic industries.' This has resulted in high tariffs on goods imported from many countries, particularly evident in the Sino-U.S. trade friction. This action superficially targets specific sectors (such as technology and manufacturing), but in reality disrupts the global industrial chain's collaboration—companies are forced to adjust their supply chains and bear additional costs, which ultimately get partially passed on to consumers, increasing inflationary pressure. More critically, unilateral tariff increases violate multilateral trade rules (such as WTO principles), exacerbating the disorder in international trade and provoking countermeasures from trade partners, creating a vicious cycle of 'tariff wars.' Both history and reality prove that protectionism fails to resolve structural contradictions and only harms others while being detrimental to oneself, ultimately damaging the momentum of global economic growth.