Microglass Bulk Filter Media Fiber from China
Fine-diameter microglass fibers in bulk for manufacturing HEPA filters and battery separators. Classifies under HTS 7019.90.51.20 as other bulk glass fibers, with silica content meeting glass wool criteria. Supplied uncompressed for custom web formation.
Duty Rate — China → United States
41.8%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Document micron diameter (<5μm typical); use anti-static bulk bags
• Validate boric oxide <2% for glass wool status
• Avoid pre-matting that creates heading 7019 articles