Harmonized System
Section VII > Chapter 40 > Heading 4001 > 4001.30
Balata, guttaperca, guayule, chicle e gomme naturali analoghe
Section VII > Chapter 40 > Heading 4002 > 4002.1
Gomma butadiene-stirene (SBR); gomma butadiene-stirene carbossilato (XSBR)
Section VII > Chapter 40 > Heading 4002 > 4002.3
Gomma isobutene-isoprene (butile) (IIR); gomma isobutene-isoprene alogenato (CIIR o BIIR)
Section VII > Chapter 40 > Heading 4002 > 4002.4
Gomma cloroprene (clorobutadiene) (CR)
Section VII > Chapter 40 > Heading 4002 > 4002.5
Gomma acrilonitrile-butadiene (NBR)
Section VII > Chapter 40 > Heading 4002 > 4002.20
Gomma butadiene (BR)
Section VII > Chapter 40 > Heading 4002 > 4002.3 > 4002.31
Gomma isobutene-isoprene (butile) (IIR)