Ceramic Mullite Boat for Technical Furnaces from China
A mullite ceramic boat shaped and fired for holding samples in high-temperature technical furnaces during material testing and sintering. It qualifies for HTS 6909.19.50.95 as 'other technical uses' ceramic ware, made from siliceous clays and oxides. The design ensures stability under thermal cycling.
Duty Rate — China → United States
39%
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
• Submit firing process documentation proving temperatures over 800°C to meet Chapter 69 requirements
• Avoid common pitfalls by specifying 'technical use' on invoices, distinguishing from refractory bricks
• Bundle with end-use declarations from importers to support classification away from Chapter 69 exclusions