High Molecular Weight Ethylene-Butene Elastomer from China
An elastomeric copolymer with ethylene and 1-butene monomers, ethylene at >95% by weight, imported in primary powder or pellet form under 3901.90.10. Used in wire insulation compounding. Elastomeric designation per Chapter 39 notes distinguishes it from standard polyethylenes.
Duty Rate — China → United States
37.5%
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
9903.88.0225%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 high molecular weight via GPC test results for elastomeric proof
• Bulk shipments require homogeneous sampling to avoid disputes
• Common issue: reclassification if moisture content suggests processing