Norway supplies 97.9% of U.S. imports of Double Salts & Mixtures of Calcium & Ammonium Nitrate, across 17 countries (year to date through September 2026).
HHI 9,580 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
17 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | Norway | $4.9M | 99.1% | +16.6% | 0.0% |
| 2 | Lithuania | $23K | 0.5% | -11.4% | 0.0% |
| 3 | Czech Republic | $18K | 0.4% | +577.3% | 1.3% |
| 4 | United Kingdom | $7K | 0.1% | -15.8% | 0.0% |
| 5 | Netherlands | -- | 0.0% | +16.6% | -- |
| 6 | Belgium | -- | 0.0% | -- | -- |
| 7 | Slovakia | -- | 0.0% | +188.3% | -- |
| 8 | Portugal | -- | 0.0% | -- | -- |
| 9 | Italy | -- | 0.0% | +36.2% | -- |
| 10 | Turkey | -- | 0.0% | -- | -- |
| 11 | United Arab Emirates | -- | 0.0% | +92.2% | -- |
| 12 | China | -- | 0.0% | -39.4% | -- |
| 13 | Canada | -- | 0.0% | +8.8% | -- |
| 14 | Egypt | -- | 0.0% | -- | -- |
| 15 | Mexico | -- | 0.0% | -7.1% | -- |
| 16 | Dominican Republic | -- | 0.0% | -- | -- |
| 17 | Colombia | -- | 0.0% | +69.5% | -- |
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.