3902.90.00.10/Pure Polybutylene Homopolymer Granules/Japan

Pure Polybutylene Homopolymer Granules from Japan

Pure Polybutylene Homopolymer Granules contain 98%+ butene-1 monomer units in unmodified primary form for masterbatch production. Ideal for blending in wire insulation and medical tubing. Classified specifically as polybutylene under 3902.90.0010 due to exceeding 95% named polymer threshold.

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

• Include GPC/Molecular weight certificates to prove primary polymer status

• Declare exact % composition on commercial invoice to match subheading note (a)(1)