HS code · 4-digit heading
HS Code 39.10 – Silicones in primary forms
Subheadings under 39.10 1
Top exporters and importers of HS code 3910, 2025
In 2025, the largest exporter of HS code 3910 in UN Comtrade data was the United States, with 21% of world exports; the largest importer in UN Comtrade data was China, with 9.8% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 United States $1.4B 21% of world exports
- 2 China $1.4B 21% of world exports
- 3 Japan $753M 12% of world exports
World total: $6.5B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $813M 9.8% of world imports
- 2 United States $673M 8.1% of world imports
- 3 South Korea $489M 5.9% of world imports
World total: $8.3B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Questions about HS 39.10
What is HS code 3910?
HS code 3910 is a 4-digit heading in the Harmonized System that covers: Silicones in primary forms.
Which countries are the top exporters of goods under HS code 3910?
In 2025, the top exporters of HS code 3910 in UN Comtrade data were the United States ($1.4B, 21% of world exports), China ($1.4B) and Japan ($753M). World exports came to about $6.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 3910?
In 2025, the top importers of HS code 3910 in UN Comtrade data were China ($813M, 9.8% of world imports), the United States ($673M) and South Korea ($489M). World imports came to about $8.3B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 3910 structured?
HS code 3910 is a 4-digit heading under Chapter 39 of the Harmonized System. The first 2 digits (39) identify the chapter, and digits 3-4 (10) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.