During the Trump administration, the tariff policy towards China was adjusted multiple times, with "suspension of tariffs" mainly referring to the delay or partial exemption of already imposed tariffs under specific circumstances. This decision is usually based on multiple considerations: first, internal industry pressure in the United States is an important factor, as some industries experience increased production costs due to tariffs, prompting companies to lobby the government to postpone taxation to alleviate operational pressure; second, diplomatic negotiation strategies require releasing signals of easing during critical stages of trade negotiations in exchange for concessions from the other party; moreover, the need for economic stability during special periods, such as the temporary removal of tariffs on certain medical products to ensure the supply of medical materials in the wake of the pandemic impact in 2020.

From a policy characteristic perspective, such tariff suspensions are clearly temporary and selective. The scope of exemptions often focuses on irreplaceable Chinese goods or essential goods related to people's livelihoods, and the duration is often linked to specific events. Its essence remains a component of the United States' "maximum pressure" negotiation strategy, maintaining continuous pressure on negotiation counterparts through dynamic adjustments of tariff leverage.

This policy has a dual impact on the international market: in the short term, it alleviates some cost pressure on importers and stabilizes the supply chain of specific goods; but in the long term, it exacerbates market uncertainty, forcing companies to adjust their global supply chain layouts. Chinese export companies gain breathing space during this process, but also face the risk of order fluctuations. It is worth noting that the suspension of tariffs did not change the structural contradictions in Sino-U.S. economic and trade relations, as divergences on core issues such as technological competition and market access continue to exist.

From a macro perspective, this policy fluctuation reflects the practical limitations of unilateral tariff tools. Even if execution is postponed, the previously imposed tariffs still have an inhibitory effect on bilateral trade. Data shows that the trade volume of goods between China and the U.S. decreased by 13% between 2018 and 2020, and the repeated adjustments of tariff policies have objectively accelerated the diversification process of multinational companies' supply chains. This strategic suspension is essentially a typical case of political decisions dominating economic affairs, with its effects constrained by profound changes in the global economic environment and industrial structure.