SIR 50 Standard Indonesian Rubber from China
SIR 50 is a lower-grade TSNR from Indonesian plantations, coagulated into loose crumbs compressed into bales with higher ash (1.5%) tolerance for cost-sensitive applications like mats and footwear soles. It qualifies as technically specified under international standards. Classified in HTS 4001.22.00 for primary crumb/bale forms.
Duty Rate — China → United States
25%
Rate breakdown
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)
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
• Include origin certificates verifying Indonesian plantation source, as grade specs vary by region
• Test for Mooney viscosity compliance; out-of-spec material risks downgrade to waste (4004)
• Use ventilated containers to prevent mold in humid crumb bales during ocean transit