The United States has imposed new antidumping and countervailing duties on polypropylene corrugated boxes from China, adding fresh trade penalties on imported plastic packaging products used across logistics, manufacturing and retail supply chains.
The measures follow final determinations by the U.S. Department of Commerce and the U.S. International Trade Commission (USITC) that Chinese producers benefited from government subsidies and sold the products in the U.S. at unfairly low prices.
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As a result, Washington has issued formal trade orders requiring importers to pay additional duties on affected shipments.
Polypropylene corrugated boxes are widely used as reusable containers for transporting goods in sectors including automotive parts, electronics, agriculture and e-commerce distribution.
The U.S. government concluded that imports of these plastic packaging boxes were harming domestic manufacturers.
Trade rulings trigger duties
The new measures combine two types of trade remedy: antidumping duties, which address products sold below fair market value, and countervailing duties, which offset foreign government subsidies.
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By GlobalDataIn the investigation, the U.S. Department of Commerce determined that Chinese exporters were selling polypropylene corrugated boxes in the American market at less than fair value.
The agency calculated a dumping margin of 83.64% for the China-wide entity, reflecting the estimated difference between export prices and normal value.
Commerce also concluded that producers received significant government subsidies. The final countervailing duty investigation identified subsidy rates of 62.27% for Chinese exporters and producers covered by the ruling.
Because both findings were affirmative and the USITC determined that domestic manufacturers suffered material injury, the United States moved ahead with issuing antidumping and countervailing duty orders on imports from China.
Packaging product at centre of dispute
The investigation focuses on polypropylene corrugated boxes, a type of lightweight plastic container manufactured from corrugated or hollow-core polypropylene sheets.
These boxes are designed to be durable and reusable, making them common in industrial supply chains and transport packaging systems.
The products covered by the trade measures include a wide range of configurations such as bins, totes and folding boxes used to hold and transport goods. They may be produced in one-piece, two-piece or multi-piece designs and can be printed, reinforced or fitted with handles and lids.
U.S. authorities classify these goods under the tariff code commonly used for plastic containers. The scope includes finished boxes as well as separate lids imported alongside or independently of the boxes.
Background to the investigation
The case began after a group of U.S. manufacturers filed petitions alleging unfair trade practices involving polypropylene corrugated boxes imported from China. Investigations were launched under U.S. trade law governing dumping and subsidies.
Trade data cited in the investigation show that imports from China have been significant in recent years. U.S. imports of the product were valued at roughly $150 million in 2024, according to government trade statistics referenced during the proceedings.
Under the U.S. trade remedy system, both the Department of Commerce and the USITC must reach affirmative findings before duties can be imposed.
Commerce determines whether dumping or subsidies occurred, while the USITC evaluates whether those imports caused material injury to domestic industry.
With both agencies issuing positive determinations, U.S. Customs and Border Protection will now collect the duties on affected imports.
The measures form part of a broader pattern of U.S.–China trade disputes involving industrial materials, plastics and manufactured goods, as governments increasingly rely on trade remedies to address pricing and subsidy concerns in global supply chains.
