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3901.90.90.00/Cross-Linked Polyethylene (PEX) Resin/Japan

Cross-Linked Polyethylene (PEX) Resin from Japan

Cross-linked polyethylene resin undergoes chemical modification for enhanced heat resistance, used in plumbing pipes. It falls under 3901.90.90.00 per subheading note (a)(3) as chemically modified polymers classified in 'Other' unless more specific. Primary form pellets distinguish it from finished PEX tubing.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Document cross-linking process details to justify 'chemically modified' under note (a)(3) placement in 'Other'

• Avoid shipping as pre-cross-linked tubing to prevent reclassification to 3917.31 (flexible tubes)

Cross-Linked Polyethylene (PEX) Resin from Japan — Import Duty Rate | HTS 3901.90.90.00