Casting Unsaturated Polyester Resin from China
Low-viscosity unsaturated polyester resin designed for casting cultured marble countertops and decorative solid surfaces. It qualifies under HTS 3907.91.5000 as other unsaturated polyester in primary forms, with predominant monomer units per subheading note (a). Typically cured with fillers like ATH for opacity.
Duty Rate — China → United States
44%
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Test for gel time compliance with buyer specs during customs hold; provide MSDS detailing uncured resin status; segregate from saturated resins to prevent mixing errors