Harmonized System
Section VII > Chapter 39 > Heading 3909
… Amino-resins, phenolic resins and polyurethanes, in primary forms. …
Explanatory notes
… 39.09 ‑ Amino‑resins, phenolic resins and polyurethanes, in primary forms. 3909.10 ‑ Urea resins; … MDI) 3909.39 ‑ - Other 3909.40 ‑ Phenolic resins 3909.50 ‑ Polyurethanes This heading covers : (1) Amino‑resins …Section VII > Chapter 40 > Heading 4001
… Natural rubber, balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms …
Explanatory notes
… 40.01 ‑ Natural rubber, balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms … (TSNR) 4001.29 ‑ ‑ Other 4001.30 ‑ Balata, gutta‑percha, guayule, chicle and similar natural gums This heading … bottles for hydrofluoric acid, adhesives, etc. (E) Guayule gum . This is extracted from the latex of the …Section VII > Chapter 39 > Heading 3909 > 3909.50
… Polyurethanes …
Section XI > Chapter 59 > Heading 5903 > 5903.20
… With polyurethane …
Section VII > Chapter 39 > Heading 3921 > 3921.1 > 3921.13
… Of polyurethanes …
Section VII > Chapter 40 > Heading 4001 > 4001.30
… Balata, gutta-percha, guayule, chicle and similar natural gums …