HSN heading 3920 falls under Chapter 39 — plastics and articles thereof. It breaks down into 19 sub-codes listed below.
Sub-codes under 3920 (19)
392010
OF POLYMERS OF EHTYLENE :
392020
OF POLYMERS OF PROPYLENE :
392030
OF POLYMERS OF STYRENE :
392043
CONTAINING BY WEIGHT NOT LESS THAN 6% OF PLASTICIZERS
392049
OTHER
392051
OF POLY (METHYL METHACRYLATE):
392059
OTHER :
392061
OF POLYCARBONATES :
392062
OF POLY (ETHYLENE TEREPHTHALATE):
392063
OF UNSATURATED POLYESTERS :
392069
OF OTHER POLYESTERS :
392071
OF REGENERATED CELLULOSE:
392073
OF CELLULOSE ACETATE :
392079
OF OTHER CELLULOSE DERIVATIVES :
392091
OF POLY (VINYL BUTYRAL):
392092
OF POLYAMIDES :
392093
OF AMINO-RESINS :
392094
OF PHENOLIC RESINS :
392099
OF OTHER PLASTICS :
About HSN heading 3920
The 4-digit code 3920 is an HSN heading — a mid-level grouping that breaks down further into 6-digit sub-headings and 8-digit tariff items. Choose the most specific sub-code that matches your supply so the GST rate, e-invoice schema, and GSTR-1 HSN summary all line up correctly. It sits inside Chapter 39, which covers plastics and articles thereof.