Canada supplies 41.2% of U.S. imports of Ammonium Sulfate Fertilizer, across 16 countries (year to date through August 2026).
HHI 3,136 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
16 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | Belgium | $8.4M | 52.0% | -6.1% | 0.0% |
| 2 | Canada | $7.2M | 44.5% | -34.3% | 0.0% |
| 3 | Germany | $432K | 2.7% | -69.4% | 0.0% |
| 4 | Trinidad and Tobago | $57K | 0.4% | -- | 0.0% |
| 5 | Spain | $30K | 0.2% | -99.1% | 0.0% |
| 6 | Czech Republic | $21K | 0.1% | -56.1% | 0.0% |
| 7 | Taiwan | $19K | 0.1% | -14.3% | 0.0% |
| 8 | Netherlands | $17K | 0.1% | -22.7% | 0.0% |
| 9 | Egypt | -- | 0.0% | +261.6% | -- |
| 10 | Mexico | -- | 0.0% | -58.7% | -- |
| 11 | Dominican Republic | -- | 0.0% | -71.1% | -- |
| 12 | Ukraine | -- | 0.0% | -- | -- |
| 13 | India | -- | 0.0% | +515.9% | -- |
| 14 | Thailand | -- | 0.0% | +50.8% | -- |
| 15 | China | -- | 0.0% | +66.1% | -- |
| 16 | South Korea | -- | 0.0% | -49.1% | -- |
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.