China supplies 30.5% of U.S. imports of Heterocyclic Compounds with Quinoline or Isoquinoline Ring…, across 22 countries (year to date through August 2026).
HHI 2,048 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
22 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | China | $3.0M | 37.8% | +10.3% | 14.0% |
| 2 | Ireland | $1.9M | 23.9% | +1464.5% | 1.2% |
| 3 | South Korea | $880K | 11.1% | +35.4% | 12.5% |
| 4 | India | $839K | 10.6% | -10.6% | 1.2% |
| 5 | Switzerland | $691K | 8.7% | +9517.4% | 12.2% |
| 6 | Spain | $366K | 4.6% | +478.9% | 0.0% |
| 7 | Germany | $88K | 1.1% | -26.3% | 9.0% |
| 8 | France | $54K | 0.7% | +1527.3% | 0.0% |
| 9 | Ukraine | $50K | 0.6% | -14.5% | 6.5% |
| 10 | United Kingdom | $36K | 0.5% | +377.7% | 9.6% |
| 11 | Netherlands | $30K | 0.4% | -54.1% | 5.7% |
| 12 | Canada | $9K | 0.1% | +114.3% | 11.9% |
| 13 | Portugal | -- | 0.0% | -- | -- |
| 14 | Italy | -- | 0.0% | -74.5% | -- |
| 15 | Israel | -- | 0.0% | -- | -- |
| 16 | Latvia | -- | 0.0% | +282.0% | -- |
| 17 | Czech Republic | -- | 0.0% | +131.5% | -- |
| 18 | Mexico | -- | 0.0% | -- | -- |
| 19 | Hong Kong | -- | 0.0% | -- | -- |
| 20 | Japan | -- | 0.0% | -84.7% | -- |
| 21 | Australia | -- | 0.0% | -69.1% | -- |
| 22 | Madagascar | -- | 0.0% | -- | -- |
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.