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Granular Potassium Sulfate Fertilizer from China

Granular potassium sulfate (SOP) is a premium water-soluble fertilizer containing 50% potassium oxide and 18% sulfur, used primarily for chloride-sensitive crops like tobacco, potatoes, and fruits. It falls under HTS 3104.30.00.00 as a potassic mineral fertilizer consisting of potassium sulfate not put up for retail sale. The granular form ensures even distribution and slow release in soil.

Duty Rate — China → United States

25%

Rate breakdown

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

Import Tips

Verify purity meets chapter note requirements (not chemically defined compounds excluded under note 1(b)); provide chemical analysis certificates

Ensure product is not packaged for retail (which would shift to 3105); bulk shipments only for this code

Include soil nutrient analysis or crop application data to avoid misclassification as industrial chemicals