Calcium Sulfonate Concrete Accelerator from China
A powdered additive made entirely from inorganic calcium sulfonate compounds used to accelerate the setting time of concrete in cold weather applications. It falls under HTS 3824.40.20.00 as a prepared additive for cements and concretes consisting wholly of inorganic substances. This product enhances early strength development without affecting final compressive strength.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Import Tips
• Verify 100% inorganic composition via lab analysis to avoid reclassification; obtain supplier certificates confirming no organic content; ensure proper labeling as 'inorganic concrete additive' for CBP review