Basalt Fiber Acoustic Insulation Boards from China
Boards spun from melted basalt rock (similar to rock wool) for soundproofing theaters and home theaters. Natural mineral fibers provide excellent acoustic absorption without chemical binders. Classified as rock wool equivalent under HTS 6806.10.00.10 for acoustical pads.
Duty Rate — China → United States
38.9%
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
• Include fiber diameter specs (4-10 microns typical) to confirm mineral wool classification
• Test for shot content (<10%) as high shot may trigger quality rejections
• Label 'non-combustible' per ASTM E136 for fire marshal approvals