China supplies 76.1% of U.S. imports of Vitamin B12 and Its Derivatives, across 11 countries (year to date through August 2026).
HHI 5,977 of 10,000 · HHI above 1,800. The sum of each country’s squared percentage share; one country with everything scores 10,000.
11 countries supplying this product to the U.S.
| Rank# | Country | Value | Share | YoY | Duty |
|---|---|---|---|---|---|
| 1 | China | $3.8M | 80.7% | -30.5% | 0.1% |
| 2 | Spain | $577K | 12.4% | +71.8% | 9.9% |
| 3 | India | $138K | 3.0% | -33.9% | 0.0% |
| 4 | Mexico | $75K | 1.6% | +141.2% | 0.0% |
| 5 | Italy | $58K | 1.3% | -25.9% | 10.0% |
| 6 | Israel | $35K | 0.8% | -- | 12.5% |
| 7 | United Kingdom | $16K | 0.3% | +7.6% | 0.0% |
| 8 | France | -- | 0.0% | -47.5% | -- |
| 9 | Turkey | -- | 0.0% | +331.8% | -- |
| 10 | Portugal | -- | 0.0% | -11.3% | -- |
| 11 | Germany | -- | 0.0% | +23.8% | -- |
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.