China supplies 55.1% of U.S. imports of Vitamin C (Ascorbic Acid) and Its Derivatives, across 25 countries (year to date through August 2026).
HHI 4,004 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
25 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | China | $10.5M | 64.8% | -44.2% | 0.4% |
| 2 | United Kingdom | $2.7M | 16.7% | +18.1% | 0.0% |
| 3 | India | $922K | 5.7% | -29.9% | 0.0% |
| 4 | Canada | $710K | 4.4% | +2.9% | 0.0% |
| 5 | Switzerland | $632K | 3.9% | +28.9% | 0.0% |
| 6 | Israel | $222K | 1.4% | +302.6% | 0.0% |
| 7 | Taiwan | $135K | 0.8% | +9.6% | 0.0% |
| 8 | Germany | $106K | 0.7% | +59.5% | 0.0% |
| 9 | South Korea | $96K | 0.6% | +4.5% | 0.0% |
| 10 | Turkey | $60K | 0.4% | +198.2% | 2.4% |
| 11 | France | $55K | 0.3% | +195.8% | 1.2% |
| 12 | Norway | $26K | 0.2% | +193.2% | 0.0% |
| 13 | Australia | $13K | 0.1% | -8.7% | 0.0% |
| 14 | Spain | $7K | 0.1% | +45.5% | 10.0% |
| 15 | Mexico | $4K | <0.1% | +132.6% | 0.0% |
| 16 | Japan | $4K | <0.1% | +59.4% | 0.0% |
| 17 | Netherlands | $3K | <0.1% | -- | 0.0% |
| 18 | Hungary | -- | 0.0% | -- | -- |
| 19 | Ukraine | -- | 0.0% | -14.2% | -- |
| 20 | Slovakia | -- | 0.0% | +218.1% | -- |
| 21 | Denmark | -- | 0.0% | +274.8% | -- |
| 22 | Malaysia | -- | 0.0% | -- | -- |
| 23 | Georgia | -- | 0.0% | +314.0% | -- |
| 24 | Russia | -- | 0.0% | -- | -- |
| 25 | Latvia | -- | 0.0% | -44.0% | -- |
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.