Polyoxymethylene Homopolymer Resin from China
Polyoxymethylene (POM) homopolymer, such as Delrin, is a high-molecular-weight polyacetal where the acetal monomer units contribute over 95% by weight, meeting subheading note (a)(1). It is supplied in primary form as pellets for injection molding into precision engineering parts. Classified under 3907.10.00.00 as a pure polyacetal.
Duty Rate — China → United States
31.5%
Rate breakdown
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)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Verify monomer content exceeds 95% by weight via lab analysis to confirm homopolymer status per subheading note (a)(1)
• Provide certificate of analysis (COA) documenting primary form (pellets/resin) and no chemical modification
• Avoid misclassification as copolymer by ensuring predominant monomer documentation