China supplies 20.8% of U.S. imports of Heterocyclic Compounds with Nitrogen Heteroatoms, across 53 countries (year to date through August 2026).
HHI 1,077 of 10,000 · HHI 1,000–1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
53 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | China | $118.6M | 24.0% | -- | 14.0% |
| 2 | United Kingdom | $62.2M | 12.6% | -- | 12.7% |
| 3 | India | $58.0M | 11.8% | -- | 5.2% |
| 4 | Switzerland | $46.8M | 9.5% | -- | 11.1% |
| 5 | Belgium | $42.6M | 8.6% | -- | 0.2% |
| 6 | Singapore | $34.6M | 7.0% | -- | 1.8% |
| 7 | Germany | $27.0M | 5.5% | -- | 8.4% |
| 8 | Ireland | $23.2M | 4.7% | -- | 0.1% |
| 9 | Japan | $15.5M | 3.1% | -- | 7.5% |
| 10 | South Korea | $11.6M | 2.4% | -- | 11.2% |
| 11 | Spain | $8.8M | 1.8% | -- | 4.7% |
| 12 | France | $8.3M | 1.7% | -- | 7.7% |
| 13 | Italy | $7.3M | 1.5% | -- | 6.4% |
| 14 | Netherlands | $6.2M | 1.3% | -- | 0.9% |
| 15 | Austria | $4.0M | 0.8% | -- | 10.0% |
| 16 | Israel | $3.7M | 0.8% | -- | 9.2% |
| 17 | Taiwan | $3.2M | 0.6% | -- | 8.5% |
| 18 | Brazil | $3.1M | 0.6% | -- | 44.1% |
| 19 | Canada | $2.4M | 0.5% | -- | 1.1% |
| 20 | Ukraine | $1.2M | 0.2% | -- | 6.3% |
| 21 | Finland | $1.1M | 0.2% | -- | 0.0% |
| 22 | Vietnam | $1.1M | 0.2% | -- | 19.0% |
| 23 | Argentina | $661K | 0.1% | -- | 16.5% |
| 24 | Sweden | $531K | 0.1% | -- | 10.0% |
| 25 | Mexico | $470K | 0.1% | -- | 0.3% |
| 26 | Saudi Arabia | hidden | hidden | hidden | hidden |
| 27 | Slovakia | hidden | hidden | hidden | hidden |
| 28 | Czech Republic | hidden | hidden | hidden | hidden |
| 29 | South Africa | hidden | hidden | hidden | hidden |
| 30 | Turkey | hidden | hidden | hidden | hidden |
| 31 | Hungary | hidden | hidden | hidden | hidden |
| 32 | Malta | hidden | hidden | hidden | hidden |
| 33 | Thailand | hidden | hidden | hidden | hidden |
| 34 | Colombia | hidden | hidden | hidden | hidden |
| 35 | Hong Kong | hidden | hidden | hidden | hidden |
| 36 | Lithuania | hidden | hidden | hidden | hidden |
| 37 | United Arab Emirates | hidden | hidden | hidden | hidden |
| 38 | Vatican City | hidden | hidden | hidden | hidden |
| 39 | Portugal | hidden | hidden | hidden | hidden |
| 40 | Indonesia | hidden | hidden | hidden | hidden |
| 41 | Poland | hidden | hidden | hidden | hidden |
| 42 | Guadeloupe | hidden | hidden | hidden | hidden |
| 43 | Australia | hidden | hidden | hidden | hidden |
| 44 | New Zealand | hidden | hidden | hidden | hidden |
| 45 | Cameroon | hidden | hidden | hidden | hidden |
| 46 | Sierra Leone | hidden | hidden | hidden | hidden |
| 47 | Madagascar | hidden | hidden | hidden | hidden |
| 48 | Bulgaria | hidden | hidden | hidden | hidden |
| 49 | Latvia | hidden | hidden | hidden | hidden |
| 50 | Slovenia | 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.