Harmonized System
Section VII > Chapter 40 > Heading 4001 > 4001.2 > 4001.22
Technically specified natural rubber (TSNR)
Section VII > Chapter 40 > Heading 4001 > 4001.30
Balata, gutta-percha, guayule, chicle and similar natural gums
Section VII > Chapter 40 > Heading 4002
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.
Section VII > Chapter 40 > Heading 4002 > 4002.1
Styrene-butadiene rubber (SBR); carboxylated styrene-butadiene rubber (XSBR)
Section VII > Chapter 40 > Heading 4002 > 4002.3
Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR)
Section VII > Chapter 40 > Heading 4002 > 4002.4
Chloroprene (chlorobutadiene) rubber (CR)
Section VII > Chapter 40 > Heading 4002 > 4002.5
Acrylonitrile-butadiene rubber (NBR)