South Korea supplies 45.2% of U.S. imports of Maleic Anhydride, across 10 countries (year to date through August 2026).
HHI 3,035 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
10 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | South Korea | $354K | 52.0% | +4.7% | 12.5% |
| 2 | China | $146K | 21.4% | +366.1% | 41.7% |
| 3 | Austria | $95K | 14.0% | +83.6% | 10.0% |
| 4 | Taiwan | $32K | 4.7% | -39.5% | 10.0% |
| 5 | India | $29K | 4.3% | -- | 14.2% |
| 6 | Hungary | $25K | 3.7% | +13.8% | 10.0% |
| 7 | Japan | -- | 0.0% | +5009.6% | -- |
| 8 | Mexico | -- | 0.0% | +287.0% | -- |
| 9 | Indonesia | -- | 0.0% | -- | -- |
| 10 | Canada | -- | 0.0% | -86.4% | -- |
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.