US Producers File Antidumping Petitions Against Chinese, Vietnamese Box Imports

On March 18, 2025, four U.S. manufacturers of polypropylene corrugated boxes, including CoolSeal USA and Inteplast Group, filed petitions for antidumping and countervailing duties against imports from China and Vietnam, alleging unfair trade practices. The petitioners argue that these imports have surged nearly fivefold between 2022 and 2024, causing significant price pressure and threatening the domestic industry. The U.S. Department of Commerce is expected to start investigations into these claims on April 7, 2025, with preliminary and final determinations anticipated in the coming months. The petitions claim that Chinese and Vietnamese producers benefit from subsidies and engage in price discrimination, leading to material injury to U.S. producers. If the investigations confirm dumping or subsidization, special tariffs may be imposed, affecting the pricing and supply of these products in the U.S. market. The classifications of the affected products cover all types of polypropylene corrugated boxes, regardless of their specific configurations.