Regenerated Cellulose Battery Separator Film from China
Microporous 0.04 mm regenerated cellulose film used as separators in alkaline batteries. Falls under HTS 3920.79.10.00 as thin noncellular sheet of cellulose derivatives without support. Microporosity doesn't make it cellular per definitions.
Duty Rate — China → United States
41.2%
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
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Import Tips
• Certify noncellular via microscopy (no discrete cells); industrial use docs helpful
• Common issue: classifying as paper separator (4823.90)