Subheading 4002.31

Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 40.01 with any product of this heading, in primary forms or in plates, sheets or strip. - Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR): - Isobutene-isoprene (butyl) rubber (IIR)

1 tariff line items

HS Code	Description	MFN Duty	Pref. Rate	UoM
4002310000	Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 40.01 with any product of this heading, in primary forms or in plates, sheets or strip. - Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR): - Isobutene-isoprene (butyl) rubber (IIR)	Free	CCCT, LDCT, GPT, UST, MXT, CIAT, CT, CRT, IT, NT, SLT, PT, COLT, JT, PAT, HNT, KRT, CEUT, UAT, CPTPT, UKT: Free	KGM

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