High-Purity Fused Silica Lump from China
Irregular lumps of high-purity fused silica obtained directly from the melting furnace, used in refractory linings or remelting. HTS 7001.00.10.00 applies as glass in the mass specifically of fused quartz/silica, excluding waste or cullet.
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
• Distinguish from cullet (7001.00.20); provide production records showing direct fusion, not recycling
• Declare OH content levels; low-hydroxyl lumps for specific optics may need additional testing
• Avoid bulk packaging pitfalls; use vermiculite for thermal protection during sea freight