Zinc Electrolyte Purification Sludge Lead Content from China
Sludge residue from purifying electrolytes in zinc electrowinning plants, mainly zinc compounds with lead and arsenic. Used for recovering metals or manufacturing their compounds. HTS 2620.19.60.20 applies to this lead-bearing zinc slag per chapter definitions.
Duty Rate — China → United States
37.5%
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include electrowinning process description in entry docs to confirm Heading 2620 eligibility
• Report lead content via assay without deductions; mismatches trigger audits
• Segregate from iron-bearing sludges to avoid Chapter 72 reclassification