Japan supplies 22.0% of U.S. imports of Supported Catalysts, Not Elsewhere Specified, across 30 countries (year to date through August 2026).
HHI 1,135 of 10,000 · HHI 1,000–1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
30 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | Japan | $8.7M | 19.6% | +22.1% | 4.4% |
| 2 | Germany | $8.0M | 18.1% | +5.0% | 6.9% |
| 3 | Italy | $6.5M | 14.8% | -25.4% | 10.0% |
| 4 | China | $4.6M | 10.5% | -15.6% | 35.2% |
| 5 | Belgium | $3.4M | 7.6% | +35.5% | 10.0% |
| 6 | France | $2.4M | 5.4% | -26.4% | 10.0% |
| 7 | Canada | $2.2M | 5.0% | -10.4% | 0.2% |
| 8 | Poland | $1.7M | 3.8% | -8.2% | 10.0% |
| 9 | Kuwait | $985K | 2.2% | -- | 0.0% |
| 10 | Estonia | $967K | 2.2% | +51.1% | 10.0% |
| 11 | Australia | $867K | 2.0% | -19.8% | 12.5% |
| 12 | United Kingdom | $864K | 2.0% | -21.1% | 10.0% |
| 13 | Denmark | $743K | 1.7% | -11.8% | 10.0% |
| 14 | Philippines | $599K | 1.4% | -- | 12.5% |
| 15 | India | $368K | 0.8% | -45.9% | 10.0% |
| 16 | Czech Republic | $345K | 0.8% | -43.0% | 10.0% |
| 17 | Netherlands | $340K | 0.8% | -8.0% | 10.0% |
| 18 | Mexico | $276K | 0.6% | +1758.4% | 0.0% |
| 19 | United Arab Emirates | $142K | 0.3% | -38.0% | 12.5% |
| 20 | South Africa | $111K | 0.3% | +41.7% | 12.5% |
| 21 | Vietnam | $30K | 0.1% | -95.4% | 12.5% |
| 22 | Honduras | $30K | 0.1% | +110.7% | 10.0% |
| 23 | Thailand | $26K | 0.1% | -66.9% | 12.5% |
| 24 | North Macedonia | -- | 0.0% | +14478.0% | -- |
| 25 | Austria | -- | 0.0% | -83.1% | -- |
| 26 | Luxembourg | hidden | hidden | hidden | hidden |
| 27 | Niger | hidden | hidden | hidden | hidden |
| 28 | South Korea | hidden | hidden | hidden | hidden |
| 29 | Spain | hidden | hidden | hidden | hidden |
| 30 | Switzerland | 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.