Germany supplies 24.4% of U.S. imports of Polyisobutylene in Primary Forms, across 18 countries (year to date through August 2026).
HHI 1,680 of 10,000 · HHI 1,000–1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
18 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | Germany | $2.6M | 22.6% | +30.2% | 10.0% |
| 2 | France | $2.1M | 18.2% | -12.9% | 10.0% |
| 3 | Argentina | $2.0M | 17.2% | +27.6% | 16.5% |
| 4 | Brazil | $1.8M | 15.3% | -37.6% | 44.0% |
| 5 | South Korea | $1.4M | 11.8% | -34.1% | 12.5% |
| 6 | Canada | $1.0M | 8.8% | -33.2% | 0.0% |
| 7 | China | $337K | 2.9% | -46.6% | 37.5% |
| 8 | Japan | $223K | 1.9% | +35.6% | 12.5% |
| 9 | Belgium | $108K | 0.9% | +8202.3% | 10.0% |
| 10 | United Kingdom | $31K | 0.3% | -7.9% | 13.0% |
| 11 | Netherlands | $3K | <0.1% | +517.4% | 10.0% |
| 12 | Italy | $3K | <0.1% | +50.6% | 10.0% |
| 13 | Australia | -- | 0.0% | -- | -- |
| 14 | Mexico | -- | 0.0% | -2.3% | -- |
| 15 | Switzerland | -- | 0.0% | -- | -- |
| 16 | Bulgaria | -- | 0.0% | -- | -- |
| 17 | India | -- | 0.0% | -91.3% | -- |
| 18 | Taiwan | -- | 0.0% | -31.1% | -- |
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.