China supplies 34.3% of U.S. imports of Heterocyclic Compounds with Unfused Pyridine Ring, across 36 countries (year to date through September 2026).
HHI 1,629 of 10,000 · HHI 1,000–1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
36 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | China | $36.3M | 30.9% | +6.0% | 16.8% |
| 2 | Singapore | $20.2M | 17.2% | +2.4% | 0.0% |
| 3 | Switzerland | $16.8M | 14.3% | +31.7% | 12.2% |
| 4 | India | $10.3M | 8.8% | -21.1% | 4.8% |
| 5 | Japan | $7.3M | 6.3% | +13.2% | 6.0% |
| 6 | Spain | $6.7M | 5.7% | +85.8% | 2.9% |
| 7 | United Kingdom | $5.0M | 4.3% | +48.0% | 16.0% |
| 8 | Italy | $4.3M | 3.6% | +22.9% | 2.7% |
| 9 | South Korea | $2.7M | 2.3% | +100.4% | 12.5% |
| 10 | Germany | $2.4M | 2.0% | -5.9% | 9.0% |
| 11 | Brazil | $2.2M | 1.9% | -64.1% | 44.0% |
| 12 | Belgium | $1.1M | 0.9% | -85.7% | 6.5% |
| 13 | Ukraine | $612K | 0.5% | -3.5% | 6.5% |
| 14 | Israel | $576K | 0.5% | +7092.2% | 19.0% |
| 15 | Sweden | $340K | 0.3% | +107.1% | 0.0% |
| 16 | Taiwan | $220K | 0.2% | -64.0% | 10.0% |
| 17 | France | $110K | 0.1% | -81.5% | 0.4% |
| 18 | Canada | $99K | 0.1% | -55.9% | 2.8% |
| 19 | Brunei | $81K | 0.1% | -66.3% | 5.8% |
| 20 | Netherlands | $48K | <0.1% | -22.9% | 3.3% |
| 21 | Slovakia | $26K | <0.1% | +125.1% | 10.0% |
| 22 | Mexico | $19K | <0.1% | +4811.3% | 0.0% |
| 23 | Poland | $7K | <0.1% | -88.6% | 0.0% |
| 24 | Latvia | $5K | 0.0% | +804.0% | 10.0% |
| 25 | Hong Kong | $3K | 0.0% | -- | 19.0% |
| 26 | Lithuania | hidden | hidden | hidden | hidden |
| 27 | Ireland | hidden | hidden | hidden | hidden |
| 28 | Czech Republic | hidden | hidden | hidden | hidden |
| 29 | Denmark | hidden | hidden | hidden | hidden |
| 30 | Argentina | hidden | hidden | hidden | hidden |
| 31 | Australia | hidden | hidden | hidden | hidden |
| 32 | Slovenia | hidden | hidden | hidden | hidden |
| 33 | South Africa | hidden | hidden | hidden | hidden |
| 34 | Malta | hidden | hidden | hidden | hidden |
| 35 | Indonesia | hidden | hidden | hidden | hidden |
| 36 | Hungary | hidden | hidden | hidden | hidden |
Duty is the duty Census calculated on this month's imports for consumption from each country, as a share of their customs value. It applies the rates in force, additional duties such as Section 301, 232 and IEEPA included and claimed trade-agreement preferences netted out, so it is an observed rate rather than a statutory one. It is an estimate, not duty collected: antidumping and countervailing duties, fees and later refunds are not in it. YoY compares year-to-date value with the same months last year.