Global tariff policies kept adjusting last week, with three key developments worth close attention.

On August 17, the U.S. Department of Commerce released the final determination for administrative reviews. Eighteen Chinese enterprises failed to secure separate‑rate eligibility and were classified under the “China‑wide entity”, meaning relevant products will be subject to an 86.01% anti‑dumping duty rate.

The following day, the United States International Trade Commission (USITC) issued an affirmative final ruling, finding that Chinese‑produced L‑lysine has caused material injury to the U.S. domestic industry. For the products under investigation, the maximum anti‑dumping duty rate stands at 139.83% and the maximum countervailing duty rate at 82.11%, resulting in a combined duty rate as high as 188.04%.

Separately, per Bloomberg reports, Mexico plans to impose additional tariffs on certain goods imported from China and other non‑FTA countries. The scope covers steel, auto parts, textiles and electronic products. Trade partners under free‑trade agreements including the United States, Canada and Europe are exempt from these new levies.

With mounting global trade barriers, relevant enterprises need to closely monitor tariff revisions and optimize their supply‑chain arrangements.